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Inventor

HILLSHAFER DOUGLAS K

US6 patents
⚠️ This page may combine multiple inventors who share the name “HILLSHAFER DOUGLAS K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DOW CHEMICAL CO

3 patents
US4687788AAug 18, 1987

Dimensionally stable urethane elastomers

DOW CHEMICAL CO36 citations92
US4868223ASep 19, 1989

Use of amine initiated butylene oxide polyols in polyurethane products

DOW CHEMICAL CO20 citations81
US4478941AOct 23, 1984

Method for determining component ratios employed to prepare polymers

DOW CHEMICAL CO12 citations71

STEPAN CO

2 patents
US6569352B1May 27, 2003

Phthalic anhydride based polyester-ether polyols and urethane prepolymers produced therefrom

STEPAN CO39 citations91
US6855844B1Feb 15, 2005

Phtalic anhydride based polyester-ether polyols and double metal cyanide catalyst system for preparing same

STEPAN CO27 citations89

FIRESTONE TIRE & RUBBER CO

1 patent
US4814411AMar 21, 1989

Increased reactivity of isocyanate terminated polyether prepolymers with metal halide salt complexes of methylenedianiline

FIRESTONE TIRE & RUBBER CO9 citations72