Individual holder
BETZ ERWIN C
8 granted patents·110 citations·filing 1974–1987
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
8 records- 0179US4008050AApparatus for combining oxygen and hydrogenBETZ ERWIN C·Filed 1975·Granted Feb 15, 1977·30 cites·10 claims
- 0263US4702892AHeat recuperative catalytic oxidation deviceBETZ ERWIN C·Filed 1985·Granted Oct 27, 1987·26 cites·19 claims
- 0362US3994831AMetallic catalyst support and catalytic metal coated on sameBETZ ERWIN C·Filed 1975·Granted Nov 30, 1976·14 cites·10 claims
- 0457US4867949AHeat recuperative combustion deviceBETZ ERWIN C·Filed 1987·Granted Sep 19, 1989·20 cites·10 claims
- 0545US4170629AMethod of converting hydrocarbon waste gas streams using a non-uniform crimped metal ribbon packed catalyst bedBETZ ERWIN C·Filed 1977·Granted Oct 9, 1979·7 cites·10 claims
- 0639US4065268ANon-uniform crimped metal ribbon packed catalyst bed and method using sameBETZ ERWIN C·Filed 1975·Granted Dec 27, 1977·5 cites·11 claims
- 0737US3956187ACatalyst support and method for preparing the sameBETZ ERWIN C·Filed 1974·Granted May 11, 1976·5 cites·33 claims
- 0834US3978197AWood fly ash reduction methodBETZ ERWIN C·Filed 1975·Granted Aug 31, 1976·3 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →