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USPTO Patent Rankings Data through Dec 31, 2025
DJ

David C. Janssen — 22 Patents

SSStrattec Security: 15 patents #2 of 72Top 3%
BSBriggs & Stratton: 5 patents #122 of 502Top 25%
SFSaint-Gobain Glass France: 2 patents #366 of 1,055Top 35%
Whitefish Bay, WI: #20 of 211 inventorsTop 10%
Wisconsin: #1,688 of 40,088 inventorsTop 5%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
David C. Janssen has been granted 22 US patents while listed as an inventor at Strattec Security. The first was granted in 1993 and the most recent in August 2024. David C. Janssen ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list David C. Janssen in Whitefish Bay, WI, US.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12065873 Spacer having improved adhesion Walter Schreiber, Florian CARRE 2024-08-20
8883277 Multiple glazing unit incorporating at least one antireflection film and use of an antireflection film in a multiple glazing unit Marcus Neander, Vincent Reymond, Ulrich Billert 2014-11-11
7501595 Self-compensating motion detector Steven J. Dimig, Erik Esser 2009-03-10 $535,000
7140213 Steering column lock apparatus and method Michael G. Feucht, William Schuster 2006-11-28 $1,238,000
6958551 Vehicle coded ignition lock using a magnetic sensor 2005-10-25 $1,032,000
6948344 Key assembly for vehicle ignition locks 2005-09-27 $1,090,000
6617961 Security system for a vehicle and method of operating same Henry Wagner, Robert Thomas Buczkiewicz 2003-09-09 $1,317,000
6427504 Key assembly for vehicle ignition locks Ronald J. McGuire, William Schuster 2002-08-06 $1,762,000
6367298 Key assembly for vehicle ignition locks Brian J. Reetz, Ronald J. McGuire, Glenn A. Niles 2002-04-09 $1,039,000
6367299 Key assembly for vehicle ignition locks Brian J. Reetz 2002-04-09 $1,039,000
6276179 Key assembly for vehicle ignition locks Ronald J. McGuire 2001-08-21 $1,085,000
6035677 Key assembly for vehicle ignition locks Brian J. Reetz 2000-03-14 $1,389,000
5836187 Tumberless automobile ignition lock Larry R. Grimmer 1998-11-17 $1,629,000
5659279 Magnetizer holding fixture Eric J. Neusen 1997-08-19 $1,318,000
5611225 Breakaway cylinder head Dennis E. Resch 1997-03-18 $1,010,000
5551267 Anti-magnetic tampering system for automobile ignition lock Thomas Osborne 1996-09-03 $6,060,000
5455571 Fail safe system for a mechanical lock key set with electronic interlock 1995-10-03 $987,000
5433096 Key assembly for vehicle ignition locks Brian J. Reetz 1995-07-18 $880,000
5398532 Modular wiring harness for electronic vehicle ignition lock Vilnis Gagainis 1995-03-21 $5,842,000
5287098 Fail safe system for a mechanical lock and key set with electrical interlock 1994-02-15 $6,274,000
5202580 Anti-tampering magnet for automobile ignition lock 1993-04-13 $5,690,000
5186031 Self-destruct electrical interlock for cylinder lock and key set Larry R. Grimmer 1993-02-16 $2,522,000