Inventor

PETROW HENRY G

13 patents

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

PROTOTECH CO

7 patents

US4044193AAug 23, 1977

Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation of fuel cell electrodes and the like employing the same

PROTOTECH CO88 citations96

US4399185AAug 16, 1983

Low pressure-drop catalytic mat and method of preparing the same

PROTOTECH CO31 citations92

US3992331ANov 16, 1976

Catalytic platinum metal particles on a substrate and method of preparing the catalyst

PROTOTECH CO38 citations92

US4082699AApr 4, 1978

Method of preparing catalytic structures from colloidal platinum compounds and such catalytic structures

PROTOTECH CO30 citations82

US3992512ANov 16, 1976

Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation

PROTOTECH CO30 citations82

US4059541ANov 22, 1977

Platinum colloid sol and method of forming same

PROTOTECH CO16 citations73

US3933684AJan 20, 1976

Method of forming palladium oxide and palladium particles

PROTOTECH CO8 citations73

PETROW HENRY G

4 patents

US4659566AApr 21, 1987

Compositions and methods for permanently waving or straightening hair

PETROW HENRY G28 citations91

US4295985AOct 20, 1981

Method of removal of chlorine retained by human skin and hair after exposure to chlorinated water, and soap and shampoo compositions adapted to effect said removal

PETROW HENRY G33 citations86

US3960989AJun 1, 1976

Colloidal sol antimony pentaoxide flameproofing compositions

PETROW HENRY G11 citations73

US4841997AJun 27, 1989

Method for setting hair or fur

PETROW HENRY G17 citations72

PROTOTECH INC

2 patents

US4166143AAug 28, 1979

Control of the interaction of novel platinum-on-carbon electrocatalysts with fluorinated hydrocarbon resins in the preparation of fuel cell electrodes

PROTOTECH INC44 citations91

US4102819AJul 25, 1978

Finely particulated colloidal platinum, compound and sol for producing the same, and method of preparation

PROTOTECH INC28 citations81