P

Inventor

NOETZEL SIEGFRIED

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

HOECHST AG

16 patents
US4036811AJul 19, 1977

Flame retarding polyamide molding compositions

HOECHST AG115 citations96
US4906715AMar 6, 1990

N,N'-divinylalkylurea crosslinked polymers, a process for their preparation, and their use

HOECHST AG25 citations92
US4568706AFeb 4, 1986

Macroporous bead polymers, a process for their preparation and their use

HOECHST AG31 citations92
US4166161AAug 28, 1979

Flame-retarding, expandable molding compositions of styrene polymers

HOECHST AG6 citations74
US3980615ASep 14, 1976

Flame retarding plastic materials

HOECHST AG10 citations74
US5079156AJan 7, 1992

Carrier bonded enzymes and a process for their preparation

HOECHST AG10 citations73
US4931476AJun 5, 1990

Crosslinked polymers and a process for their preparation

HOECHST AG10 citations73
US4767620AAug 30, 1988

Crosslinked polymers with carbonate ester groups, and a process for their preparation

HOECHST AG14 citations73
US4098759AJul 4, 1978

Bromine-containing cyclic phosphonic acid esters

HOECHST AG8 citations73
US3980614ASep 14, 1976

Flame retarding plastic materials

HOECHST AG14 citations73
US3966849AJun 29, 1976

Bromine-containing cyclic phosphonic acid esters

HOECHST AG8 citations73
US4542069ASep 17, 1985

Vinylene carbonate polymers, a process for their preparation and their use

HOECHST AG17 citations69
US4010225AMar 1, 1977

Bromine containing telomeric phosphonic acid esters as flame retardant agents

HOECHST AG2 citations62
US3991010ANov 9, 1976

Process for preparing flame resistant plastics materials

HOECHST AG3 citations62
US3950458AApr 13, 1976

Bromine containing telomeric phosphonic acid esters

HOECHST AG2 citations62
US4111900ASep 5, 1978

Bromine-containing phosphinic acid esters and flame-resistant plastic molding compositions

HOECHST AG5 citations56

BOEHRINGER MANNHEIM GMBH

4 patents

ROCHE DIAGNOSTICS OPERATIONS

4 patents