Inventor · disambiguated record
Na Chang
Also filed as: CHANG NA · CHANG NA ON
4 granted patents·0 citations·filing 2020–2023
52Inventor score
Top patents by PatentIndex Score
4 records- 0158US11878921B2Nanofiltration membrane for treating printing and dyeing wastewater and its preparation methodTIANGONG UNIV·Filed 2022·Granted Jan 23, 2024·0 cites·10 claims
- 0258US11587693B2Solidifying method of hydroxides of radionuclidesKOREA ATOMIC ENERGY RES·Filed 2020·Granted Feb 21, 2023·0 cites·12 claims
- 0353US11802068B2Preparation method for recycling inorganic salt in printing and dyeing wastewaterTIANGONG UNIV·Filed 2022·Granted Oct 31, 2023·0 cites·5 claims
- 0451US11944660B1Topical traditional Chinese medicine (TCM) composition and topical preparation for cervical disease, and preparation methods thereofCHANG SHAN·Filed 2023·Granted Apr 2, 2024·0 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Na 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 →