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Patent applications and USPTO patent grants for Petroleum Energy Center(PEC).The latest application filed is for "process for the purification of polyarylene sulfide".
Patent | Date |
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Process for the purification of polyarylene sulfide Grant 6,743,890 - Bando June 1, 2 | 2004-06-01 |
Polyarylensulfide, polyarylensulfide resin composition, method for producing polyarylensulfide Grant 6,566,488 - Okamoto , et al. May 20, 2 | 2003-05-20 |
Polyarylensulfide, polyarylensulfide resin composition, method for producing polyarylensulfide Grant 6,388,003 - Okamoto , et al. May 14, 2 | 2002-05-14 |
Method for the production of anhydrous alkali metal sulfide and alkali metal sulfide solution Grant 6,337,062 - Akiba January 8, 2 | 2002-01-08 |
Polyarylene sulfide resin composition, and moldings and connectors made of it Grant 6,316,536 - Okamoto , et al. November 13, 2 | 2001-11-13 |
Catalyst composition manufacturing method and sulfur-containing hydrocarbon hydrodesulfurization method using the same catalyst composition Grant 5,565,091 - Iino , et al. October 15, 1 | 1996-10-15 |
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