Inventor
TSENG SUSAN Y
US28 patents
⚠️ This page may combine multiple inventors who share the name “TSENG SUSAN Y”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ISP INVESTMENTS INC
21 patentsUS5672634ASep 30, 1997
Crosslinked PVP-I2 foam product
ISP INVESTMENTS INC124 citations98
US5716634AFeb 10, 1998
Clear, homogenized, flowable hydrogel of crosslinked N-vinyl lactam polymer
ISP INVESTMENTS INC18 citations92
US5354823AOct 11, 1994
Films and extrusions of cured crosslinked vinyl lactam polymer and method of preparation
ISP INVESTMENTS INC35 citations92
US5605685AFeb 25, 1997
Non-irritating skin and hair rejuvenating compostion having a pH between 1 and 6.5
ISP INVESTMENTS INC34 citations89
US5717045AFeb 10, 1998
Crosslinked copolymers of vinyl pyrrolidone and dimethylaminoethyl methacrylate and process for making same in aqueous solution having desirable gel properties
ISP INVESTMENTS INC6 citations74
US5567786AOct 22, 1996
Polymerizable composition of vinylpyrrolidone and vinyl caprolactam
ISP INVESTMENTS INC10 citations74
US5393854AFeb 28, 1995
Colorless, purified polymerizable composition useful for the production of crosslinked polyvinylpyrrolidone
ISP INVESTMENTS INC6 citations74
US5286826AFeb 15, 1994
Process for making highly crosslinked polyvinylpyrrolidone having a low swell volume
ISP INVESTMENTS INC18 citations74
US5280049AJan 18, 1994
Molded cellular crosslinked vinyl lactam polymer gel and method of preparation
ISP INVESTMENTS INC6 citations74
US5239053AAug 24, 1993
Purification of vinyl lactam polymers
ISP INVESTMENTS INC17 citations73
US5614583AMar 25, 1997
Homogenized flowable hydrogel of crosslinked N-vinyl lactam polymer
ISP INVESTMENTS INC3 citations63
US5391668AFeb 21, 1995
Colorless, purified polymerizable composition useful for the production of crosslinked polyvinylpyrrolidone
ISP INVESTMENTS INC2 citations63
US5362796ANov 8, 1994
Molded crosslinked vinyl lactam polymer gel and method of preparation
ISP INVESTMENTS INC2 citations63
US5336697AAug 9, 1994
Molded cellular crosslinked vinyl lactam polymer gel and method of preparation
ISP INVESTMENTS INC1 citations63
US5286876AFeb 15, 1994
Process for obtaining 1-vinyl-3(E)-ethylidene pyrrolidone
ISP INVESTMENTS INC2 citations63
US5274120ADec 28, 1993
1-vinyl-3(E)-ethylidene pyrrolidone
ISP INVESTMENTS INC3 citations63
US5393825AFeb 28, 1995
Films and extrusions of cured crosslinked vinyl lactam polymer and method of preparation
ISP INVESTMENTS INC5 citations62
US6011160AJan 4, 2000
Crosslinked polyvinylpyrrolidone (PVPP) copolymer of vinyl pyrrolidone (VP) and monomer derived from 1-vinyl-3-(E)-ethylidene pyrrolidone (EVP)
ISP INVESTMENTS INC2 citations61
US5654385AAug 5, 1997
One-step process for making lightly-crosslinked polyvinylpyrrolidone hydrogel
ISP INVESTMENTS INC6 citations57
US5360883ANov 1, 1994
Process for obtaining a polymerizable reaction solution
ISP INVESTMENTS INC1 citations52
US5342964AAug 30, 1994
Process for obtaining the isomeric compound 1-vinyl-3(E)-ethylidene pyrrolidone
ISP INVESTMENTS INC0 citations42