Topic leaderboard
Radio-controlled time-pieces
Ranked by the PatentIndex Score — a 1–99 percentile within G04R · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest G04R patents became public in the last 2 years — the current frontier
- 199Jae Bong Chun14 patents · 65 citations
- 296Woo Suk Kang14 patents · 65 citations
- 392Abu T. Sayem7 patents · 103 citations
- 488Jae Won Choe8 patents · 37 citations
- 583Miroslav Samardzija6 patents · 29 citations
- 679Siwen Yong6 patents · 29 citations
- 775Yiren Wang6 patents · 29 citations
- 871Yuehui Ouyang6 patents · 29 citations
- 967Kevin Li6 patents · 32 citations
- 1063Chung-Ting Hung2 patents · 10 citations
- 1158Jack Kohn2 patents · 3 citations
- 1254John B. Kenney2 patents · 3 citations
- 1350Kamatchi S. Gopalakrishnan2 patents · 3 citations
- 1446Rafik P.2 patents · 3 citations
- 1542Sushma B. Bavache2 patents · 3 citations
- 1638Erik G. De Jong2 patents · 2 citations
- 1733Jason B. Sapp2 patents · 2 citations
- 1829Jeffrey K. Sapp2 patents · 2 citations
- 1925Peter Paul Dawson2 patents · 1 citations
- 2021Xiaoqiang Huang2 patents · 1 citations
- 2117George Zampetti2 patents · 0 citations
- 2213Chuang Shi1 patents · 1 citations
- 238Fu Zheng1 patents · 1 citations
- 244Marouane Balmakhtar1 patents · 1 citations
- 251ANDREJS AXEL1 patents · 0 citations
Active· last 5 yrs
Sustained G04R output across the last 5 years
- 199Teruhiko Fujisawa72 patents · 672 citations
- 296Fumiaki Miyahara8 patents · 93 citations
- 392Jae Bong Chun14 patents · 65 citations
- 488Woo Suk Kang14 patents · 65 citations
- 583Abu T. Sayem7 patents · 103 citations
- 679Jae Won Choe8 patents · 37 citations
- 775Se Woong Kim7 patents · 27 citations
- 871Chae Up Yoo6 patents · 26 citations
- 967Erik G. De Jong5 patents · 29 citations
- 1063Miroslav Samardzija6 patents · 29 citations
- 1158Siwen Yong6 patents · 29 citations
- 1254Yiren Wang6 patents · 29 citations
- 1350Yuehui Ouyang6 patents · 29 citations
- 1446Kevin Li6 patents · 32 citations
- 1542Takeshi Matsue22 patents · 26 citations
- 1638Hiroshi Katsuda6 patents · 15 citations
- 1733Sang Bong Sung4 patents · 14 citations
- 1829Natsuko Takase3 patents · 17 citations
- 1925Yusuke Yoshitani3 patents · 17 citations
- 2021Panu Perko4 patents · 13 citations
- 2117Jae Kwang Sim3 patents · 13 citations
- 2213Jeong-Ho Ahn3 patents · 13 citations
- 238Sherry Tang3 patents · 11 citations
- 244Yvan Ferri6 patents · 11 citations
- 251Sameer Pandya4 patents · 7 citations
All-time canon
Career PatentIndex Score in G04R
- 199Jeffrey J. Kochy4 patents · 1,894 citations
- 296Don G. Hoff6 patents · 754 citations
- 392Matthew P. Ebrom11 patents · 305 citations
- 488Mark E. Glotzbach7 patents · 255 citations
- 583Teruhiko Fujisawa72 patents · 672 citations
- 679Wolfgang Ganter14 patents · 460 citations
- 775Alan R. Ebright3 patents · 1,515 citations
- 871David P. Warden3 patents · 1,515 citations
- 967Giambattista A. Alegiani3 patents · 1,515 citations
- 1063John H. Roop3 patents · 1,515 citations
- 1158Konstantine Sokolik3 patents · 1,515 citations
- 1254Isao Oguchi6 patents · 117 citations
- 1350Akinari Takada13 patents · 160 citations
- 1446Michael A. Pikula7 patents · 101 citations
- 1542Junro Yano9 patents · 152 citations
- 1638Tadashi Yasuoka6 patents · 161 citations
- 1733Donald T. Rose3 patents · 618 citations
- 1829Joseph F. Stiley, Iii3 patents · 618 citations
- 1925Lewis W. Barnum3 patents · 618 citations
- 2021Robert G. Rullman3 patents · 618 citations
- 2117Anja Skrivervik4 patents · 211 citations
- 2213Kaoru Someya21 patents · 131 citations
- 238Mark A. Insero3 patents · 372 citations
- 244Fumiaki Miyahara8 patents · 93 citations
- 251Jae Bong Chun14 patents · 65 citations
Rising· last 2 yrs
The top-scoring G04R patents made public in the last 2 years
- 199US11988751B2✦ AIIntelligent and dynamic gateway2 cites · 202467% earned
- 296US11946635B1✦ AIDesk lamp with alarm clock and lamp brightness control1 cites · 202456% earned
- 391US12092997B2✦ AIHigh-precision time synchronization system and method using virtual atomic clocks1 cites · 202467% earned
- 487US12273837B2Systems and methods for quantum based network time validation1 cites · 202467% earned
- 583US11860688B1Network generated precision time1 cites · 202456% earned
- 678US12300883B2Electronic device including multiband antenna0 cites · 20240% earned
- 774US12416901B2Electronic device with near-field antenna operating through display0 cites · 20240% earned
- 870US12554230B2Automatic time zone detection in devices0 cites · 20240% earned
- 965US12386319B2Electronic device and wrist device0 cites · 20240% earned
- 1061US12298414B2Scalable common view time transfer and related apparatuses and methods0 cites · 20240% earned
- 1157US12461876B2Systems and methods for providing a global navigation satellite system capability to a tim0 cites · 20240% earned
- 1252US12366883B2Time synchronized sensor data for robotics systems and applications0 cites · 20240% earned
- 1348US12554231B2Radio-controlled timepiece and method of controlling radio-controlled timepiece0 cites · 20240% earned
- 1443US12339629B1Antenna watch0 cites · 20250% earned
- 1539US12530000B2Housing assembly, wearable device, and assembling method0 cites · 20240% earned
- 1635US12314795B2Conductive ink-based parasitic element for a device antenna0 cites · 20240% earned
- 1730US12276739B2Vehicle-mounted controller and method for issuing absolute time of vehicle and vehicle0 cites · 20240% earned
- 1826US12567814B2Method and device for calibrating a time base signal in a photovoltaic inverter0 cites · 20240% earned
- 1922US12463701B2Wearable device0 cites · 20240% earned
- 2017US12422787B2Conductive watch housing with slot antenna configuration0 cites · 20240% earned
- 2113US12585230B2Timepiece module and electronic timepiece0 cites · 20240% earned
- 229US12535776B2Long-baseline real-time time transfer method based on undifferenced and uncombined PPP-RTK0 cites · 20240% earned
- 234US12535777B2Frequency control assist device, frequency control device, and radio device0 cites · 20240% earned
- 241US12603718B2Robust time distribution and synchronization in computer and radio access networks0 cites · 2024
Active· last 5 yrs
The top-scoring G04R patents of the last 5 years
- 199US11537082B2✦ AIWatch provided with a control member9 cites · 202187% earned
- 296US11719841B1✦ AITiming alignment method for data acquired by monitoring units of borehole-surface micro-se3 cites · 202380% earned
- 392US11853015B2✦ AIWrist worn electronic device with switchable multi band antenna system4 cites · 202282% earned
- 488US11816051B1Systems and methods for providing a global navigation satellite system capability to a tim3 cites · 202372% earned
- 583US12034204B2Antenna for wearable device2 cites · 202361% earned
- 679US11988751B2Intelligent and dynamic gateway2 cites · 202467% earned
- 775US11226650B1Managing a time reference4 cites · 202275% earned
- 871US11476569B2Electronic device including multiband antenna2 cites · 202250% earned
- 967US11175634B2Robust and resilient timing architecture for critical infrastructure3 cites · 202172% earned
- 1063US12191560B2Binding member including antenna and electronic device including the same2 cites · 202276% earned
- 1158US11050463B2Systems and methods for establishing reliable wireless links3 cites · 202172% earned
- 1254US11784673B2Electronic device housing having a radio-frequency transmissive component2 cites · 202267% earned
- 1350US11641629B2Sidelink synchronization assistance2 cites · 202176% earned
- 1446US12003019B2Electronic device2 cites · 202276% earned
- 1542US11946635B1Desk lamp with alarm clock and lamp brightness control1 cites · 202456% earned
- 1638US12092997B2High-precision time synchronization system and method using virtual atomic clocks1 cites · 202467% earned
- 1733US11917562B2Vehicle-to-everything synchronization method and device2 cites · 202176% earned
- 1829US12273837B2Systems and methods for quantum based network time validation1 cites · 202467% earned
- 1925US11764460B2Wearable devices1 cites · 202367% earned
- 2021US12101883B2Electronic device including printed circuit board1 cites · 202267% earned
- 2117US12019820B2Wearable electronic device comprising antenna and electrode1 cites · 202367% earned
- 2213US12078969B2Electronic device and wrist device1 cites · 202156% earned
- 238US11749904B2Electronic device with high frequency module1 cites · 202267% earned
- 244US11388314B1GPS timing for video frames1 cites · 202256% earned
- 251US11860688B1Network generated precision time1 cites · 202456% earned
All-time canon
The defining G04R patents of the whole record
- 199US5724316A✦ AIGPS based time determining system and method810 cites · 199895% earned
- 296US5619274A✦ AITelevision schedule information transmission and utilization system and process748 cites · 199795% earned
- 392US5812087A✦ AIMethod and apparatus for satellite positioning system based time measurement593 cites · 199890% earned
- 488US5790198ATelevision schedule information transmission and utilization system and process496 cites · 199892% earned
- 583US6052081AMethod and apparatus for satellite positioning system based time measurement431 cites · 200090% earned
- 679US4713808AWatch pager system and communication protocol426 cites · 198792% earned
- 775US5812205AAutomatic time set in a television system379 cites · 199894% earned
- 871US5663735AGPS receiver using a radio signal for improving time to first fix358 cites · 199794% earned
- 967US6239742B1Method and apparatus for satellite positioning system based time measurement278 cites · 200189% earned
- 1063US6216265B1System and method for transmitting and utilizing electronic program guide information271 cites · 200191% earned
- 1158US6377209B1Method and apparatus for satellite positioning system (SPS) time measurement262 cites · 200291% earned
- 1254US5319374APrecise universal time for vehicles254 cites · 199494% earned
- 1350US5627548ANavigation wristwear253 cites · 199791% earned
- 1446US5600711AApparatus and methods for providing initializing settings to an appliance251 cites · 199794% earned
- 1542US6215442B1Method and apparatus for determining time in a satellite positioning system234 cites · 200187% earned
- 1638US6597311B2Method and apparatus for determining time in a satellite positioning system234 cites · 200387% earned
- 1733US4897835AHigh capacity protocol with multistation capability230 cites · 199094% earned
- 1829US5488571AMethod and apparatus for downloading information from a controllable light source to a por201 cites · 199688% earned
- 1925US6839021B2Method and apparatus for determining time in a satellite positioning system190 cites · 200387% earned
- 2021US6236623B1System and method for synchronizing clocks in a plurality of devices across a communicatio184 cites · 200194% earned
- 2117US6212133B1Low power GPS receiver system and method of using same184 cites · 200194% earned
- 2213US6944540B2Time determination in satellite positioning system receivers and methods therefor169 cites · 200394% earned
- 238US5790477APortable precision clock with additonal functions166 cites · 199894% earned
- 244US4582434ATime corrected, continuously updated clock158 cites · 198694% earned
- 251US5440313AGPS synchronized frequency/time source150 cites · 199594% earned
Rising· last 2 yrs
Assignees whose newest G04R patents became public in the last 2 years — the current frontier
- 199SEIKO EPSON CORP210 patents · 1,391 citations
- 295CASIO COMPUTER CO LTD156 patents · 866 citations
- 390SAMSUNG ELECTRONICS CO LTD45 patents · 159 citations
- 485APPLE INC23 patents · 62 citations
- 580QUANTA COMP INC3 patents · 19 citations
- 675MICROCHIP TECH INC3 patents · 24 citations
- 770T MOBILE INNOVATIONS LLC3 patents · 2 citations
- 865JUNIPER NETWORKS INC2 patents · 3 citations
- 960TRIBALCO LLC2 patents · 2 citations
- 1055BEIJING XIAOMI MOBILE SOFTWARE CO LTD3 patents · 2 citations
- 1150MICROSOFT TECHNOLOGY LICENSING LLC3 patents · 0 citations
- 1245SHENZHEN BOHUI TECH CO LTD2 patents · 1 citations
- 1340GOOGLE LLC4 patents · 0 citations
- 1435UNIV BEIHANG1 patents · 1 citations
- 1530NVIDIA CORP1 patents · 0 citations
- 1625FRONIUS INT GMBH1 patents · 0 citations
- 1720GARMIN INT INC1 patents · 0 citations
- 1815ICOM INC1 patents · 0 citations
- 1910NAT TIME SERVICE CT CAS1 patents · 0 citations
- 205SHENZHEN AMAZWEAR TECH CO LTD1 patents · 0 citations
- 211XIAOMI EV TECH CO LTD1 patents · 0 citations
Active· last 5 yrs
Sustained G04R output across the last 5 years
- 199SEIKO EPSON CORP210 patents · 1,391 citations
- 296CASIO COMPUTER CO LTD156 patents · 866 citations
- 392QUALCOMM INC13 patents · 283 citations
- 488GARMIN SWITZERLAND GMBH7 patents · 127 citations
- 583ETA SA MFT HORLOGERE SUISSE20 patents · 106 citations
- 679SAMSUNG ELECTRONICS CO LTD45 patents · 159 citations
- 775APPLE INC23 patents · 62 citations
- 871SUUNTO OY5 patents · 20 citations
- 967SEMICONDUCTOR ENERGY LAB3 patents · 17 citations
- 1063PAYPAL INC4 patents · 9 citations
- 1158DENSO CORP4 patents · 32 citations
- 1254GOPRO INC4 patents · 13 citations
- 1350QUANTA COMP INC3 patents · 19 citations
- 1446HUAWEI TECH CO LTD8 patents · 5 citations
- 1542SWATCH GROUP RES & DEV LTD13 patents · 10 citations
- 1638MICROCHIP TECH INC3 patents · 24 citations
- 1733NIPPON TELEGRAPH & TELEPHONE4 patents · 13 citations
- 1829HONEYWELL INT INC2 patents · 25 citations
- 1925MITRE CORP2 patents · 6 citations
- 2021RAYTHEON BBN TECHNOLOGIES CORP2 patents · 11 citations
- 2117T MOBILE INNOVATIONS LLC3 patents · 2 citations
- 2213LYTX INC2 patents · 4 citations
- 238JUNIPER NETWORKS INC2 patents · 3 citations
- 244SONY SEMICONDUCTOR SOLUTIONS CORP4 patents · 2 citations
- 251TRIBALCO LLC2 patents · 2 citations
All-time canon
All-time PatentIndex Score in G04R
- 199SNAPTRACK INC8 patents · 2,198 citations
- 296TRIMBLE NAVIGATION LTD7 patents · 1,071 citations
- 392STARSIGHT TELECAST INC4 patents · 1,894 citations
- 488WHIRLPOOL CO5 patents · 194 citations
- 583SEIKO EPSON CORP210 patents · 1,391 citations
- 679SEIKO CORP9 patents · 477 citations
- 775ASULAB SA10 patents · 500 citations
- 871MOTOROLA INC7 patents · 457 citations
- 967CASIO COMPUTER CO LTD156 patents · 866 citations
- 1063EBAUCHESFABRIK ETA AG10 patents · 460 citations
- 1158EBROM MATTHEW P6 patents · 111 citations
- 1254JUNGHANS UHREN GMBH17 patents · 550 citations
- 1350CITIZEN WATCH CO LTD19 patents · 374 citations
- 1446NOKIA MOBILE PHONES LTD5 patents · 266 citations
- 1542QUALCOMM INC13 patents · 283 citations
- 1638TIMEX CORP4 patents · 383 citations
- 1733SONY CORP13 patents · 230 citations
- 1829NEC CORP13 patents · 238 citations
- 1925GARMIN SWITZERLAND GMBH7 patents · 127 citations
- 2021TELEFUNKEN MICROELECTRON7 patents · 141 citations
- 2117FUJISAWA TERUHIKO11 patents · 110 citations
- 2213QUARTEX DIVISION OF PRIMEX INC8 patents · 103 citations
- 238ETA SA MFT HORLOGERE SUISSE20 patents · 106 citations
- 244SAMSUNG ELECTRONICS CO LTD45 patents · 159 citations
- 251SEIKO INSTR INC32 patents · 141 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth