Inventor · disambiguated record
Donald H. Clarke
Also filed as: CLARKE DONALD H
4 granted patents·54 citations·filing 1980–2020
75Inventor score
Top patents by PatentIndex Score
4 records- 0175US4335219AProcess for reacting isocyanates in the presence of quaternary ammonium zwitterionsDOW CHEMICAL CO·Filed 1981·Granted Jun 15, 1982·25 cites·12 claims
- 0260US4519816AMethod for the recovery of solvent vaporsDOW CHEMICAL CO·Filed 1980·Granted May 28, 1985·20 cites·4 claims
- 0348US4390644AIsocyanurate foams using a sulfonium zwitterion/metal carbonylate mixture as catalystDOW CHEMICAL CO·Filed 1981·Granted Jun 28, 1983·9 cites·18 claims
- 0447US11930968B2Accessible tub and showerROCA BATHROOM PRODUCTS INC·Filed 2020·Granted Mar 19, 2024·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →