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USPTO Patent Rankings Data through Dec 31, 2025
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Robert H. Van Note — 2 Patents

ENEnvirotech: 2 patents #17 of 100Top 20%
Orinda, CA: #279 of 531 inventorsTop 55%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert H. Van Note has been granted 2 US patents while listed as an inventor at Envirotech. All of these patents were granted in 1981. Robert H. Van Note ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert H. Van Note in Orinda, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4304666 Geothermal brine treatment 1981-12-08 $1,046,000
4302328 Geothermal brine treatment 1981-11-24 $520,000