Critchfield; Frank E.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Critchfield; Frank E..The latest application filed is for "process for manufacturing foam with improved wet set properties".

Company Profile

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Critchfield; Frank E. - South Charleston WV
Critchfield; Frank E. - S. Charleston WV
Critchfield; Frank E. - Charleston WV

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Process for manufacturing foam with improved wet set properties Grant 5,549,841 - Kinkelaar , et al. August 27, 1	1996-08-27
Low viscosity polymer polyols with improved dispersion stability Grant 5,496,894 - Critchfield , et al. March 5, 1	1996-03-05
Flexible polyurethane foams using chlorinated alkanes Grant 5,395,860 - Leung , et al. March 7, 1	1995-03-07
Low viscosity polymer polyols with improved dispersion stability Grant 5,364,906 - Critchfield , et al. November 15, 1	1994-11-15
Process for the manufacture of low density, flexible polyurethane foams Grant 4,883,825 - Westfall , et al. November 28, 1	1989-11-28
Polymer/polyol compositions having improved combustion resistance Grant RE32,733 - Simroth , et al. August 16, 1	1988-08-16
Polymer/polyols having improved combustion resistance and intrinsic viscosity, methods of making same and polyurethanes prepared therefrom Grant 4,652,589 - Simroth , et al. March 24, 1	1987-03-24
Polymer/polyol compositions having improved combustion resistance Grant 4,463,107 - Simroth , et al. July 31, 1	1984-07-31
Polyurethane elastomers prepared from polyol or polymer/polyol-chain extender mixtures Grant 4,312,973 - Critchfield , et al. January 26, 1	1982-01-26
Polymer/polyisocyanates Grant 4,283,500 - Armstrong , et al. August 11, 1	1981-08-11
Mixtures of extenders and polyols or polymer/polyols useful in polyurethane production Grant 4,226,756 - Critchfield , et al. October 7, 1	1980-10-07
Thermoplastic polyether polyurethane elastomers Grant 4,190,711 - Zdrahala , et al. February 26, 1	1980-02-26
Polymer/polyols from high ethylene oxide content polyols Grant 4,125,505 - Critchfield , et al. November 14, 1	1978-11-14
Graft copolymers of lactone polyesters Grant 3,884,994 - Critchfield , et al. May 20, 1	1975-05-20
Graft Copolymers Of Lactone Polyesters Grant 3,760,034 - Critchfield , et al. September 18, 1	1973-09-18

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