Inventor · disambiguated record
Howard J. Klopfer
Also filed as: KLOPFER HOWARD J
8 granted patents·90 citations·filing 1976–1984
86Inventor score
Files withGEN ELECTRIC8
Top patents by PatentIndex Score
8 records- 0186US3998840AMethod for making polyetherimides using a sodium chloride or ferric sulfate catalystGEN ELECTRIC·Filed 1976·Granted Dec 21, 1976·35 cites·7 claims
- 0267US4565858APolyetherimides with high thermal stability and solvent resistance and precursors thereforGEN ELECTRIC·Filed 1984·Granted Jan 21, 1986·17 cites·11 claims
- 0361US4293683AMethod for making polyetherimides using carboxylic acid salts of alkali metals or zinc as catalystsGEN ELECTRIC·Filed 1980·Granted Oct 6, 1981·14 cites·10 claims
- 0460US4049721APurification of crude 9,9-bis-(4-hydroxyphenyl)-fluoreneGEN ELECTRIC·Filed 1976·Granted Sep 20, 1977·12 cites·2 claims
- 0556US4460798AProcess for preparation of asymmetrical bisphenolsGEN ELECTRIC·Filed 1983·Granted Jul 17, 1984·5 cites·8 claims
- 0653US4105857AProcess for preparing phenyl trichloro-ethanesGEN ELECTRIC·Filed 1977·Granted Aug 8, 1978·3 cites·2 claims
- 0748US4460800AProcess for preparation of hydroxyaryldialkylcarbinolsGEN ELECTRIC·Filed 1983·Granted Jul 17, 1984·3 cites·9 claims
- 0832US4128731APreparation of 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethaneGEN ELECTRIC·Filed 1977·Granted Dec 5, 1978·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →