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Patent applications and USPTO patent grants for Yelton; Harold D..The latest application filed is for "process for preparing high molecular weight poly(arylene sulfide) polymers using lithium salts".
Patent | Date |
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Process for preparing high molecular weight poly(arylene sulfide) polymers using lithium salts Grant 5,929,203 - Ash , et al. July 27, 1 | 1999-07-27 |
Process for the preparation of poly(arylene sulfide) with low metal contamination and polymer produced Grant 5,280,104 - Geibel , et al. January 18, 1 | 1994-01-18 |
Method for the production of light colored aromatic sulfide/sulfone polymers with 1,3-dialkyl-2-imidazolidinone diluent Grant 5,066,774 - Geibel , et al. November 19, 1 | 1991-11-19 |
Melt stabilization of poly(arylene sulfide sulfone)s Grant 4,774,276 - Bobsein , et al. September 27, 1 | 1988-09-27 |
P-Phenylene sulfide polymers Grant 4,024,118 - Campbell , et al. May 17, 1 | 1977-05-17 |
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