Inventor · disambiguated record
Stephen Jay Shellhammer
Also filed as: SHELLHAMMER STEPHEN · SHELLHAMMER STEPHEN J · SHELLHAMMER STEPHEN JAY
128 granted patents·45 pending applications·3,502 citations·filing 1990–2025
99Inventor score
Files withQUALCOMM INC118SYMBOL TECHNOLOGIES INC22SHELLHAMMER STEPHEN J9ABRAHAM SANTOSH PAUL5SADEK AHMED K4
Top patents by PatentIndex Score
173 records- 0199US8463195B2Methods and apparatus for spectrum sensing of signal features in a wireless channelSHELLHAMMER STEPHEN J·Filed 2009·Granted Jun 11, 2013·195 cites·36 claims
- 0299US8290503B2Multichannel dynamic frequency selectionSADEK AHMED K·Filed 2010·Granted Oct 16, 2012·299 cites·21 claims
- 0399US8027690B2Methods and apparatus for sensing the presence of a transmission signal in a wireless channelQUALCOMM INC·Filed 2008·Granted Sep 27, 2011·196 cites·36 claims
- 0497US11924812B2Enhanced trigger frameQUALCOMM INC·Filed 2021·Granted Mar 5, 2024·4 cites·26 claims
- 0597US9525540B1Embedded wake-up signalingQUALCOMM INC·Filed 2016·Granted Dec 20, 2016·45 cites·30 claims
- 0697US7039358B1Coexistence techniques in wireless networksSYMBOL TECHNOLOGIES INC·Filed 2000·Granted May 2, 2006·213 cites·31 claims
- 0797US6853293B2Wearable communication systemSYMBOL TECHNOLOGIES INC·Filed 2002·Granted Feb 8, 2005·227 cites·26 claims
- 0897US6672506B2Statistical sampling security methodology for self-scanning checkout systemSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Jan 6, 2004·286 cites·41 claims
- 0997US5635697AMethod and apparatus for decoding two-dimensional bar codeSYMBOL TECHNOLOGIES INC·Filed 1994·Granted Jun 3, 1997·344 cites·12 claims
- 1097US5319181AMethod and apparatus for decoding two-dimensional bar code using CCD/CMD cameraSYMBOL TECHNOLOGIES INC·Filed 1992·Granted Jun 7, 1994·484 cites·46 claims
- 1196US11245501B2Multi-access point scheduling in wireless local area networksQUALCOMM INC·Filed 2019·Granted Feb 8, 2022·10 cites·48 claims
- 1296US9648485B2Discovery of a neighbor awareness network (NAN) using a wake up messageQUALCOMM INC·Filed 2015·Granted May 9, 2017·15 cites·29 claims
- 1396US8774209B2Apparatus and method for spectrum sharing using listen-before-talk with quiet periodsSADEK AHMED K·Filed 2010·Granted Jul 8, 2014·30 cites·40 claims
- 1495US6764012B2Signaling arrangement for and method of signaling in a wireless local area networkSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Jul 20, 2004·63 cites·20 claims
- 1594US12126550B2Protocols for multi-access point coordinated multi-user transmissionsQUALCOMM INC·Filed 2023·Granted Oct 22, 2024·1 cites·12 claims
- 1694US11894964B2Secure long training field (LTF)QUALCOMM INC·Filed 2022·Granted Feb 6, 2024·2 cites·34 claims
- 1794US11894929B2Hybrid automatic repeat request (HARQ) in a wireless local area network (WLAN)QUALCOMM INC·Filed 2022·Granted Feb 6, 2024·2 cites·20 claims
- 1894US11546196B2Secure long training field (LTF)QUALCOMM INC·Filed 2021·Granted Jan 3, 2023·3 cites·34 claims
- 1993US11757564B2Link adaptation using transmission rate optionsQUALCOMM INC·Filed 2020·Granted Sep 12, 2023·3 cites·29 claims
- 2092US11374699B2Hybrid automatic repeat request (HARQ) with sliding window feedbackQUALCOMM INC·Filed 2020·Granted Jun 28, 2022·3 cites·30 claims
- 2192US9763189B2Low power synchronization in a wireless communication networkQUALCOMM INC·Filed 2015·Granted Sep 12, 2017·8 cites·30 claims
- 2291US10104616B2Downlink multiplexing and MAC signaling for a system with devices operating with and without low power companion receiversQUALCOMM INC·Filed 2016·Granted Oct 16, 2018·9 cites·30 claims
- 2391US6783071B2Scanner pairing in a bluetooth POS networkSYMBOL TECHNOLOGIES INC·Filed 2001·Granted Aug 31, 2004·121 cites·8 claims
- 2490US11310743B2Determining a tone sequence for wake-up proceduresQUALCOMM INC·Filed 2020·Granted Apr 19, 2022·2 cites·30 claims
- 2590US10999014B2Hybrid automatic repeat request (HARQ) in a wireless local area network (WLAN)QUALCOMM INC·Filed 2019·Granted May 4, 2021·5 cites·29 claims
- 2690US9609520B2Methods and apparatuses for communicating in television white space (TVWS) based on TVWS enablement signalSHELLHAMMER STEPHEN J·Filed 2012·Granted Mar 28, 2017·11 cites·121 claims
- 2790US6672511B1Omnidirectional reading of two-dimensional symbolsSYMBOL TECHNOLOGIES INC·Filed 2000·Granted Jan 6, 2004·75 cites·15 claims
- 2889US9955333B2Secure wireless wake-up companionQUALCOMM INC·Filed 2015·Granted Apr 24, 2018·6 cites·18 claims
- 2989US9276795B2Data transmission coexistence within television white space channelsQUALCOMM INC·Filed 2014·Granted Mar 1, 2016·12 cites·20 claims
- 3088US11228396B2Probabilistic amplitude shapingQUALCOMM INC·Filed 2021·Granted Jan 18, 2022·2 cites·34 claims
- 3188US10356839B2Low power discontinuous reception with a second receiverQUALCOMM INC·Filed 2015·Granted Jul 16, 2019·5 cites·21 claims
- 3288US8879984B2Contact verification signalingWENTINK MAARTEN MENZO·Filed 2012·Granted Nov 4, 2014·8 cites·52 claims
- 3387US11160020B2Multicarrier on-off keying symbol randomizerQUALCOMM INC·Filed 2019·Granted Oct 26, 2021·4 cites·20 claims
- 3487US8031807B2Systems and methods for detecting the presence of a transmission signal in a wireless channelQUALCOMM INC·Filed 2007·Granted Oct 4, 2011·14 cites·22 claims
- 3586US11711183B2Protocols for multi-access point coordinated multi-user transmissionsQUALCOMM INC·Filed 2019·Granted Jul 25, 2023·3 cites·31 claims
- 3686US9878167B1Medical implant selection protocolQUALCOMM INC·Filed 2017·Granted Jan 30, 2018·9 cites·30 claims
- 3786US9585091B2Systems and methods for low power wake up signal and operations for WLANQUALCOMM INC·Filed 2013·Granted Feb 28, 2017·7 cites·70 claims
- 3886US5138140ASignature capture using electro-optical scanningSYMBOL TECHNOLOGIES INC·Filed 1990·Granted Aug 11, 1992·146 cites·14 claims
- 3985US12323254B2HARQ sequences in wireless networksQUALCOMM INC·Filed 2022·Granted Jun 3, 2025·1 cites·28 claims
- 4085US8892050B2Sensing wireless communications in television frequency bandsSHELLHAMMER STEPHEN J·Filed 2010·Granted Nov 18, 2014·8 cites·44 claims
- 4185US5523552AMethod and apparatus to scan randomly oriented two-dimensional bar code symbolsSYMBOL TECHNOLOGIES INC·Filed 1994·Granted Jun 4, 1996·91 cites·27 claims
- 4285US2025097996A1Priority access in a wireless local area network (wlan)QUALCOMM INC·Filed 2024·Application pending·0 cites
- 4384US12495383B2Zero-shot deep learning for multi-target RF positioningQUALCOMM INC·Filed 2023·Granted Dec 9, 2025·1 cites·28 claims
- 4484US11515982B2Special user information field for trigger frameQUALCOMM INC·Filed 2020·Granted Nov 29, 2022·1 cites·36 claims
- 4584US10080125B2Ultra low-power paging frames for wake-up and discoveryQUALCOMM INC·Filed 2015·Granted Sep 18, 2018·3 cites·32 claims
- 4684US9585025B2Managing transmit power for better frequency re-use in TV white spaceABRAHAM SANTOSH PAUL·Filed 2012·Granted Feb 28, 2017·6 cites·66 claims
- 4784US6209788B1Optical scannersSYMBOL TECHNOLOGIES INC·Filed 1999·Granted Apr 3, 2001·70 cites·6 claims
- 4884US6164540AOptical scannersSYMBOL TECHNOLOGIES INC·Filed 1996·Granted Dec 26, 2000·70 cites·6 claims
- 4984US2025023678A1Protocols for multi-access point coordinated multi-user transmissionsQUALCOMM INC·Filed 2024·Application pending·0 cites
- 5083US11632277B2Multi-generation communication in a wireless local area network (WLAN)QUALCOMM INC·Filed 2021·Granted Apr 18, 2023·1 cites·32 claims
Showing the top 50 of 173 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →