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

William Chamberlain — 8 Patents

CECobra Electronics: 3 patents #12 of 51Top 25%
ZEZenith Electronics: 3 patents #112 of 411Top 30%
TLThe Lubrizol: 1 patents #391 of 659Top 60%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
William Chamberlain has been granted 8 US patents while listed as an inventor at Cobra Electronics. The first was granted in 1982 and the most recent in April 2012. William Chamberlain ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list William Chamberlain in Aberdeen, IL, GB.

Patents per Year

Patents granted per year, 1982 to 2012Bar chart with a peak of 3 patents in 2001.peak 31982: 1 patents19821986: 1 patents19861987: 1 patents19871992: 1 patents19922001: 3 patents20012012: 1 patents2012

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8163681 Lubricant for hydrogen-fueled engines Ewa A. Bardasz 2012-04-24
D446195 Personal communication device Steven Fragassi, Stephen J. Gaynes, Anthony Alfred Mirabelli, Erin Napolitano, John C. Whiteman 2001-08-07
D446196 Snap-on cover for personal communication device Steven Fragassi, Stephen J. Gaynes, Anthony Alfred Mirabelli, Erin Napolitano, John C. Whiteman 2001-08-07
D442946 Microphone John Phillip Pohl, Robert E. Mudra, Jeffery Patrick Heuel 2001-05-29
5163025 Protection circuit for non-volatile memory 1992-11-10 $433,000
4716463 Power down sense circuit Carl W. Stacy 1987-12-29 $2,304,000
4600947 Television sound mute circuit John C. Weigand 1986-07-15 $1,027,000
4342071 Underwater lighting 1982-07-27