Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Polyamide, polyimide, and polyamide-imide polymers and copolymers using 3,5-diamino-t-butylbenzene

Polyamide, polyimide, and polyamide-imide polymers and copolymers using 3,5-diamino-t-butylbenzene

US Patent 4975521 · Granted Dec 4, 1990

Estimated economic value: $25,954,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Sulfided fischer-tropsch catalyst2013
Photoimageable compositions and films for printed wiring board manufacture2002
Polymide optical waveguide structures1997
Polyimide copolymers containing 3,3',4,4'-tetracarboxybiphenyl dianhydride (BPDA1994
Wet-etch process and composition1994
Low dielectric constant, low moisture uptake polyimides and copolyimides for int1993
Low dielectric constant, low moisture uptake polyimides and copolyimides for int1993
Low dielectric constant, low moisture uptake polyimides and copolyimides for int1993
Low dielectric constant, low moisture uptake polyimides and copolyimides for int1993
Preparation of 1,1,1,3,3,3-hexafluoro-2,2-Di(3,4-dicarboxyphenyl)propane anhydri1993
Wet-etch process and composition1993
Process for making thick multilayers of polyimide1992