Inventor
SCHWARK JOANNE M
US11 patents
⚠️ This page may combine multiple inventors who share the name “SCHWARK JOANNE M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HERCULES INC
6 patentsUS5021533AJun 4, 1991
Crosslinkable poly(thio)ureasilazane composition containing a free radical generator
HERCULES INC38 citations95
US4929704AMay 29, 1990
Isocyanate- and isothiocyanate-modified polysilazane ceramic precursors
HERCULES INC71 citations95
US5206327AApr 27, 1993
Preceramic polymers incorporating boron and their application in the sintering of carbide ceramics
HERCULES INC23 citations92
US5032649AJul 16, 1991
Organic amide-modified polysilazane ceramic precursors
HERCULES INC34 citations92
US5001090AMar 19, 1991
Silicon nitride ceramics from isocyanate- and isothiocyanate-modified polysilazanes
HERCULES INC30 citations92
US5155181AOct 13, 1992
(Thio)amide-modified silazane polymer composition containing a free radical generator
HERCULES INC17 citations73
MASSACHUSETTS INST TECHNOLOGY
2 patentsUS4720532AJan 19, 1988
Organopolysilazane precursors to silicon nitride-rich mixed SiC/Si3 N4
MASSACHUSETTS INST TECHNOLOGY56 citations95
US4767876AAug 30, 1988
Method for converting organosilicon polymers containing SIH repeat units and organopolysilazane precursors to new and useful preceramic polymers and silicon nitride enriched ceramic materials
MASSACHUSETTS INST TECHNOLOGY19 citations81