Inventor · disambiguated record
Ryoichi Tomizawa
Also filed as: TOMIZAWA RYOICHI
2 granted patents·48 citations·filing 1974–1976
64Inventor score
Top patents by PatentIndex Score
2 records- 0181US4022808AProcess for the production of alkylene glycol ether of organic carboxylic acidNIPPON SODA CO·Filed 1974·Granted May 10, 1977·27 cites·3 claims
- 0270US4115415AProcess for the production of alkylene glycol ether ester of organic carboxylic acidNISSO PETROCHEMICAL IND CO LTD·Filed 1976·Granted Sep 19, 1978·21 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Ryoichi Tomizawa 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 →