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Charles Holmes — 3 Patents

SDSquare D: 2 patents #240 of 756Top 35%
MPMetallic Power: 1 patents #7 of 18Top 40%
San Diego, CA: #9,932 of 23,606 inventorsTop 45%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Charles Holmes has been granted 3 US patents while listed as an inventor at Square D. The first was granted in 1988 and the most recent in March 2005. Charles Holmes ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Charles Holmes in San Diego, CA, US.

Patents per Year

Patents granted per year, 1988 to 2005Bar chart with a peak of 1 patents in 1988.peak 11988: 1 patents19881992: 1 patents19922005: 1 patents2005

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6873157 Method of and system for determining the remaining energy in a metal fuel cell Stuart Smedley, Kenneth Vail 2005-03-29
5115205 AC amplifier with automatic DC compensation — 1992-05-19
4791348 Switching ac voltage regulator Thomas B. McGuire 1988-12-13 $1,852,000

Frequent Collaborators

Thomas B. McGuire1 shared
Stuart Smedley1 shared
Kenneth Vail1 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