Inventor · disambiguated record
Nienyuan J. Chang
Also filed as: CHANG NIENYUAN J
5 granted patents·384 citations·filing 1987–1992
86Inventor score
Top patents by PatentIndex Score
5 records- 0193US4789491AMethod for preparing biodegradable fabric softening compositionsPROCTER & GAMBLE·Filed 1987·Granted Dec 6, 1988·115 cites·26 claims
- 0291US5066414AStable biodegradable fabric softening compositions containing linear alkoxylated alcoholsPROCTER & GAMBLE·Filed 1989·Granted Nov 19, 1991·97 cites·20 claims
- 0385US5275820AStable suspension formulations of bioerodible polymer matrix microparticles incorporating drug loaded ion exchange resin particlesALLERGAN INC·Filed 1990·Granted Jan 4, 1994·92 cites·24 claims
- 0480US5296228ACompositions for controlled delivery of pharmaceutical compoundsALLERGAN INC·Filed 1992·Granted Mar 22, 1994·64 cites·4 claims
- 0550US5292517ApH sensitive, reversible gelling, copolymeric erodible drug delivery systemALLERGAN INC·Filed 1992·Granted Mar 8, 1994·16 cites·15 claims
Join the waitlist — get patent alerts
Get an alert when Nienyuan J. Chang files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →