Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Richard Piehl — 2 Patents

BIBasic Measuring Instruments: 1 patents #8 of 14Top 60%
San Ramon, CA: #1,202 of 2,140 inventorsTop 60%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Richard Piehl has been granted 2 US patents while listed as an inventor at Basic Measuring Instruments. The first was granted in 1993 and the most recent in December 1996. Richard Piehl ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Richard Piehl in San Ramon, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5581471 Method and apparatus for storing electric power measurements Alexander McEachern 1996-12-03
5270637 Impulse direction detector for ac power systems Alexander McEachern 1993-12-14