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USPTO Patent Rankings Data through Dec 31, 2025
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John E. Casteras — 1 Patent

ASAsarco: 1 patents #23 of 71Top 35%
Colonia, NJ: #69 of 117 inventorsTop 60%
New Jersey: #41,444 of 69,400 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
John E. Casteras has been granted 1 US patent while listed as an inventor at Asarco. All of these patents were granted in 1983. John E. Casteras ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list John E. Casteras in Colonia, NJ, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4404026 Process for separation of dross elements combining sodium addition to molten bullion followed by controlled solidification of casting Carl R. Di Martini 1983-09-13 $8,816,000