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USPTO Patent Rankings Data through Dec 31, 2025
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Stephen Roberts — 25 Patents

PEPerpetuum: 14 patents #1 of 15Top 7%
RORohr: 6 patents #53 of 452Top 15%
GLGoodrich Actuation Systems Limited: 2 patents #27 of 101Top 30%
Xerox: 1 patents #5,237 of 8,622Top 65%
UAUS Army: 1 patents #2,854 of 6,974Top 45%
San Diego, CA: #1,622 of 23,606 inventorsTop 7%
California: #22,079 of 386,348 inventorsTop 6%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Stephen Roberts has been granted 25 US patents while listed as an inventor at Perpetuum. The first was granted in 2008 and the most recent in September 2025. Stephen Roberts ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Stephen Roberts in San Diego, CA, US.

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12421913 Variable area fan nozzle actuation system — 2025-09-23
11043089 Security device for an electrically powered device Jason Butler 2021-06-22
10815933 Variable area fan nozzle actuation system — 2020-10-27
10030608 Variable area fan nozzle actuation system — 2018-07-24
9970387 Variable area fan nozzle with bypass flow Joel H. Frank, Norman John James, Shunshen Richard Wang, Bryant Lynoel McKleny, David Baer +7 more 2018-05-15
9567943 Pivoting track lock — 2017-02-14
9461530 Electromechanical generator for converting mechanical vibrational energy into electrical energy Adam Wasenczuk 2016-10-04
9133072 Tactical capsule charge system Peter Michael Strong, Samantha Blais, Yao Chen, Leon Moy 2015-09-15
9088200 Electromechanical generator for converting mechanical vibrational energy into electrical energy — 2015-07-21
8982391 Method and system for print driver based information exchange Robert William Burke, Jr., Daniel L. McCue, III 2015-03-17 $2,412,000
8875486 Guide system for nacelle assembly — 2014-11-04
8733080 Thrust reverser and VAFN arrangement Tony Jones, John Herbert Harvey, Peter Bacon, Mark Hubberstey, Brett Wharton +2 more 2014-05-27
8680694 Vibration energy harvester for converting mechanical vibrational energy into electrical energy John Parker 2014-03-25
8629569 Electromechanical generator for, and method of, converting mechanical vibrational energy into electrical energy Adam Wasenczuk, Thomas Benoit Julien Mouille 2014-01-14
8511973 Guide system for nacelle assembly Jihad Ramlaoui, David Forsey 2013-08-20
8492937 Electromechanical generator for converting mechanical vibrational energy into electrical energy — 2013-07-23
8432084 Converting mechanical vibrational energy into electrical energy Roy Freeland 2013-04-30
8135469 Energy harvester for an implant device Roy Freeland, Giles Stanley, Keith Dobson Dawkins, John Morgan, Paul Roberts 2012-03-13
8080906 Generator for converting mechanical vibrational energy into electrical energy Roy Freeland 2011-12-20
7999402 Electromechanical generator for converting mechanical vibrational energy into electrical energy Roy Freeland 2011-08-16
7843090 Electromechanical generator for converting mechanical vibrational energy into electrical energy Roy Freeland, Neil White 2010-11-30
7586220 Electromechanical generator for converting mechanical vibrational energy into electrical energy — 2009-09-08
7554224 Electromechanical generator for converting mechanical vibrational energy into electrical energy — 2009-06-30
7453163 Electromechanical generator for, and method of, converting mechanical vibrational energy into electrical energy Behrooz Chini 2008-11-18
7345372 Electromechanical generator for, and method of, converting mechanical vibrational energy into electrical energy Behrooz Chini 2008-03-18

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