Inventor · disambiguated record
David Ladd
Also filed as: LADD DAVID · LADD DAVID J
25 granted patents·6 pending applications·817 citations·filing 1985–2025
97Inventor score
Files withBECHTEL ENERGY TECH & SOLUTIONS INC7BECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS INC4LADD HOLLY3OPCOM3VMX INC3
Top patents by PatentIndex Score
31 records- 0197US11725858B1Systems and methods for regenerative ejector-based cooling cyclesBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2022·Granted Aug 15, 2023·3 cites·20 claims
- 0296US10465983B2Systems and methods for multi-stage refrigerationBECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS INC·Filed 2017·Granted Nov 5, 2019·7 cites·15 claims
- 0393US10533793B2Systems and methods for multi-stage refrigerationBECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS INC·Filed 2016·Granted Jan 14, 2020·4 cites·15 claims
- 0492US10514201B2Systems and methods for multi-stage refrigerationBECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS INC·Filed 2017·Granted Dec 24, 2019·3 cites·6 claims
- 0592US7774962B1Removable and reusable tags for identifying bottles, cans, and the likeLADD DAVID·Filed 2008·Granted Aug 17, 2010·28 cites·10 claims
- 0691US4926462AInterface to and operation of a voice messaging systemVMX OPCOM·Filed 1988·Granted May 15, 1990·162 cites·59 claims
- 0791US4783796APBX telephone call control systemOPCOM·Filed 1985·Granted Nov 8, 1988·110 cites·17 claims
- 0889US12467669B2Systems and methods for regenerative ejector-based cooling cyclesBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2024·Granted Nov 11, 2025·0 cites·17 claims
- 0989US10514202B2Systems and methods for multi-stage refrigerationBECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS INC·Filed 2018·Granted Dec 24, 2019·2 cites·6 claims
- 1088US4747124APBX telephone call control systemOPCOM·Filed 1985·Granted May 24, 1988·104 cites·13 claims
- 1187US11821668B2Systems and methods for implementing ejector refrigeration cycles with cascaded evaporation stagesBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2022·Granted Nov 21, 2023·1 cites·7 claims
- 1286US11561027B2Systems and methods for implementing ejector refrigeration cycles with cascaded evaporation stagesBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2020·Granted Jan 24, 2023·2 cites·17 claims
- 1385US12078394B2Systems and methods for regenerative ejector-based cooling cyclesBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2023·Granted Sep 3, 2024·0 cites·20 claims
- 1482US5517556ACall processing system with facsimile processingVMX INC·Filed 1992·Granted May 14, 1996·81 cites·14 claims
- 1581US5355406AIntegrated application controlled call processing and messaging systemVMX INC·Filed 1993·Granted Oct 11, 1994·104 cites·20 claims
- 1675US6097791AVoice-messaging system with non-user outcalling and auto-provisioning capabilitiesOCTEL COMMUNICATIONS CORP·Filed 1997·Granted Aug 1, 2000·82 cites·31 claims
- 1770US12221360B2Low energy ejector desalination systemBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2022·Granted Feb 11, 2025·0 cites·19 claims
- 1864US2025145499A1Low Energy Ejector Desalination SystemBECHTEL ENERGY TECH & SOLUTIONS INC·Filed 2025·Application pending·0 cites
- 1963US5117451AInterface to and operation of a voice messaging systemVMX OPCOM·Filed 1990·Granted May 26, 1992·46 cites·2 claims
- 2062US4792967APBX DID and E and M tie trunk integration adapter and methodOPCOM·Filed 1986·Granted Dec 20, 1988·29 cites·10 claims
- 2155US8562495B2Upper body exercise apparatus for stationary bikeLADD HOLLY·Filed 2011·Granted Oct 22, 2013·2 cites·4 claims
- 2252US6685069B2Shoulder protection device for use when carrying a ladderFiled 2001·Granted Feb 3, 2004·10 cites·3 claims
- 2351US5325422APBX telephone call control systemVMX INC·Filed 1993·Granted Jun 28, 1994·17 cites·1 claims
- 2447US5991370AVoice messaging system and method providing message delivery verificationLUCENT TECHNOLOGIES INC·Filed 1997·Granted Nov 23, 1999·14 cites·26 claims
- 2546US2022236004A1Systems and Methods for Improving the Efficiency of Combined Cascade and Multicomponent Refrigeration SystemsBECHTEL ENERGY INC·Filed 2020·Application pending·0 cites
- 2646US2022268517A1Systems and Methods for Improving the Efficiency of Open-Cycle Cascade-Based Liquified Natural Gas SystemsBECHTEL ENERGY INC·Filed 2020·Application pending·0 cites
- 2744US2012035973A1Computerized dynamic capacity management system and methodBRADFORD PATRICK·Filed 2011·Application pending·0 cites
- 2841USD789465SStationary bicycle attachmentLADD HOLLY·Filed 2016·Granted Jun 13, 2017·4 cites·1 claims
- 2939US2002095253A1Vehicle stability control system with tire sensor assemblySIEMENS VDO AUTOMOTIVE CORP·Filed 2002·Application pending·0 cites
- 3032USD789464SEnhancement unit for upper body conditioning for a stationary bicycleLADD HOLLY·Filed 2016·Granted Jun 13, 2017·2 cites·1 claims
- 3130US2003078989A1System and method for transmission and delivery of travel instructions to informational appliancesFiled 1999·Application pending·0 cites
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