Inventor · disambiguated record
Donald W. Calvin
Also filed as: CALVIN DONALD W · CALVIN DONALD WILLIAM
7 granted patents·130 citations·filing 1976–1982
86Inventor score
Files withDOW CHEMICAL CO7
Top patents by PatentIndex Score
7 records- 0194US4387249AProcess for the manufacture of diethylenetriamineDOW CHEMICAL CO·Filed 1981·Granted Jun 7, 1983·68 cites·9 claims
- 0276US4054689AMethod of preparing hydrophobic silicaDOW CHEMICAL CO·Filed 1976·Granted Oct 18, 1977·18 cites·7 claims
- 0363US4008130AMethod for distilling a ternary azeotrope of fluorosilicic acid, hydrogen fluoride and waterDOW CHEMICAL CO·Filed 1976·Granted Feb 15, 1977·12 cites·5 claims
- 0462US4151078ARemoving oil from waterDOW CHEMICAL CO·Filed 1977·Granted Apr 24, 1979·18 cites·4 claims
- 0547US4508538ARecovery of fumed SiO2DOW CHEMICAL CO·Filed 1980·Granted Apr 2, 1985·6 cites·10 claims
- 0645US4585801ARe-use of fluoropolymer membranesDOW CHEMICAL CO·Filed 1982·Granted Apr 29, 1986·6 cites·12 claims
- 0731US4059680AMethod of preparing fumed SiO2DOW CHEMICAL CO·Filed 1976·Granted Nov 22, 1977·2 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Donald W. Calvin 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 →