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USPTO Patent Rankings Data through Dec 31, 2025
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John Zipfel — 3 Patents

Google: 3 patents #8,096 of 22,993Top 40%
San Francisco, CA: #11,643 of 26,999 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
John Zipfel has been granted 3 US patents while listed as an inventor at Google. The first was granted in 2018 and the most recent in July 2020. John Zipfel ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John Zipfel in San Francisco, CA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10727673 Transformerless power conversion Sangsun Kim, Anand Ramesh, Scott Aldous 2020-07-28 $65,483,000
10439399 Transformerless power conversion Sangsun Kim, Anand Ramesh, Scott Aldous 2019-10-08 $32,246,000
9997917 Transformerless power conversion Sangsun Kim, Anand Ramesh, Scott Aldous 2018-06-12 $27,323,000

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