Inventor · disambiguated record
Ronald F. Ewald
Also filed as: EWALD RONALD F
5 granted patents·97 citations·filing 1974–1980
81Inventor score
Files withSEAQUIST VALVE CO2KNIGHT ENG & MOLDING CO1SEAQUIST VALVE CO DIV OF PITTW1SEAQUIST VALVE COMPANY DIV OF1
Top patents by PatentIndex Score
5 records- 0179US4139128AVariable spray valve assemblySEAQUIST VALVE CO·Filed 1976·Granted Feb 13, 1979·49 cites·9 claims
- 0250US4243161AContinuous spray buttonSEAQUIST VALVE CO DIV OF PITTW·Filed 1978·Granted Jan 6, 1981·16 cites·13 claims
- 0346US4325497AChild-resistant spray through coverKNIGHT ENG & MOLDING CO·Filed 1980·Granted Apr 20, 1982·18 cites·14 claims
- 0440US3938711ASelf priming mechanism for dispenserSEAQUIST VALVE CO·Filed 1974·Granted Feb 17, 1976·7 cites·9 claims
- 0533US4013197ADouble seal valve stemSEAQUIST VALVE COMPANY DIV OF·Filed 1975·Granted Mar 22, 1977·7 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Ronald F. Ewald 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 →