Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RS

Robert D. Stephens — 6 Patents

General Motors: 2 patents #6,303 of 18,328Top 35%
EHEnvirotest Systems Holdings: 1 patents #15 of 33Top 50%
SCSanta Barbara Research Center: 1 patents #82 of 173Top 50%
Sterling Heights, MI: #230 of 1,485 inventorsTop 20%
Michigan: #15,817 of 86,293 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Robert D. Stephens has been granted 6 US patents while listed as an inventor at General Motors. The first was granted in 1997 and the most recent in April 2010. Robert D. Stephens ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Robert D. Stephens in Sterling Heights, MI, US.

Patents per Year

Patents granted per year, 1997 to 2010Bar chart with a peak of 2 patents in 2010.peak 21997: 1 patents19971998: 1 patents19982001: 1 patents20012006: 1 patents20062010: 2 patents2010

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7700069 Activation of metal hydrides 2010-04-20
7652753 Laser-designated target simulator and method of testing a laser-seeking munition head Louis A. Hinson 2010-01-26
7141216 System for sono-catalytic production of hydrogen 2006-11-28 $7,417,000
6216985 Railway hazard acoustic sensing, locating, and alarm system 2001-04-17
5797682 Device and method for measuring temperture of vehicle exhaust John Kert, Michael D. Jack 1998-08-25 $2,620,000
5591975 Optical sensing apparatus for remotely measuring exhaust gas composition of moving motor vehicles Michael D. Jack, Christopher B. Tacelli, David R. Nelson, Geoffrey A. Walter, Jose A. Santana +1 more 1997-01-07