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Pittsburgh Coke and Chemical Co

Pittsburgh

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2796331A	Process for making fibrous carbon	Expired / Lapsed	1954-06-09	1957-06-18	2	Details
US2765288A	Coating compositions containing coal tar pitch and an epoxy…	Expired / Lapsed	1954-12-28	1956-10-02	2	Details
US2606830A	Stable concentrated herbicidal compositions	Expired / Lapsed	1949-03-08	1952-08-12	2	Details
US2536750A	Organic mercury compounds and germicidal compositions there…	Expired / Lapsed	1947-05-19	1951-01-02	2	Details