Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Sparton › Charles E. Barnum
CB

Charles E. Barnum — 3 Patents

SPSparton: 3 patents #5 of 62Top 9%
Ada, MI: #100 of 245 inventorsTop 45%
Michigan: #27,426 of 86,293 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Charles E. Barnum has been granted 3 US patents while listed as an inventor at Sparton. The first was granted in 1991 and the most recent in January 1994. Charles E. Barnum ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Charles E. Barnum in Ada, MI, US.

Patents per Year

Patents granted per year, 1991 to 1994Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911993: 1 patents19931994: 1 patents1994

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5277288 Clutch for tire lift/carrier winch Donald R. Rempinski, Donald R. Britt 1994-01-11 $553,000
5265708 Clutch for tire lift/carrier winch Donald R. Rempinski, Donald R. Britt 1993-11-30 $288,000
5027933 Clutch for tire lift/carrier winch Donald R. Rempinski, Donald R. Britt 1991-07-02 $871,000

Frequent Collaborators

Donald R. Britt3 shared
Donald R. Rempinski3 shared

Nearby-Ranked Inventors

Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3