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USPTO Patent Rankings Data through Dec 31, 2025
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Robert C. Kerby — 5 Patents

COCominco: 5 patents #4 of 133Top 4%
Rossland, CA: #3 of 29 inventorsTop 15%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert C. Kerby has been granted 5 US patents while listed as an inventor at Cominco. The first was granted in 1980 and the most recent in April 1984. Robert C. Kerby ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert C. Kerby in Rossland, BC, CA.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4443301 Controlling metal electro-deposition using electrolyte containing two polarizing agents 1984-04-17 $4,856,000
4430178 Method and apparatus for effecting current reversal in electro-deposition of metals Harold J. T. Anderson, Clifford J. Krauss, Hubert W. Neame 1984-02-07 $5,219,000
4416746 Bipolar refining of lead Clifford J. Krauss 1983-11-22 $6,051,000
4324621 Method and apparatus for controlling the quality of electrolytes 1982-04-13 $4,021,000
4217189 Method and apparatus for control of electrowinning of zinc 1980-08-12 $9,763,000