Assignee
PARK CHEM CO
12 granted patents·98 citations·filing 1975–1986
Top patents by PatentIndex Score
12 records- 0180US4738731AMethod of heat treating metal using a washable synthetic quenchantPARK CHEM CO·Filed 1986·Granted Apr 19, 1988·19 cites·16 claims
- 0260US4904423APressure molding process using salt cores and composition for making coresPARK CHEM CO·Filed 1984·Granted Feb 27, 1990·20 cites·14 claims
- 0360US4251292AMethod for restoring molecular weight distribution of a polymeric quenchantPARK CHEM CO·Filed 1979·Granted Feb 17, 1981·10 cites·2 claims
- 0454US4149702AMethod and apparatus for recycling heat treating saltsPARK CHEM CO·Filed 1977·Granted Apr 17, 1979·7 cites·11 claims
- 0544US4491607AMold release agents and means of applicationPARK CHEM CO·Filed 1981·Granted Jan 1, 1985·14 cites·13 claims
- 0642US4473403AMold release agents for open-cell molded foamed articles and means of applicationPARK CHEM CO·Filed 1984·Granted Sep 25, 1984·13 cites·8 claims
- 0742US4158579AMethod for recycling heat treating saltsPARK CHEM CO·Filed 1977·Granted Jun 19, 1979·7 cites·18 claims
- 0834US4396439ARecovery and recycle of nitrate and nitrite salts from chloride containing quench bath solidsPARK CHEM CO·Filed 1981·Granted Aug 2, 1983·2 cites·15 claims
- 0931US4491523AMethod for treating barium toxic water using low-temperature stabilized polyacrylamide compositionsPARK CHEM CO·Filed 1983·Granted Jan 1, 1985·2 cites·4 claims
- 1030US4009112APelletized rectifier for molten neutral salt baths and methodPARK CHEM CO·Filed 1975·Granted Feb 22, 1977·0 cites·8 claims
- 1125US4153481ACyanide-free carburizing process and compositionPARK CHEM CO·Filed 1977·Granted May 8, 1979·3 cites·4 claims
- 1220US4001038AMethod of stripping paint in a molten salt bathPARK CHEM CO·Filed 1975·Granted Jan 4, 1977·1 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →