Inventor · disambiguated record
William L. Kjelgaard
Also filed as: KJELGAARD WILLIAM L
4 granted patents·56 citations·filing 1974–1980
76Inventor score
Files withRESEARCH CORP4
Top patents by PatentIndex Score
4 records- 0180US4385500AMethod and apparatus for the adiabatic expansion of liquid anhydrous ammoniaRESEARCH CORP·Filed 1980·Granted May 31, 1983·27 cites·18 claims
- 0260US3978681AMethod and apparatus for the adiabatic expansion of liquid anhydrous ammoniaRESEARCH CORP·Filed 1974·Granted Sep 7, 1976·19 cites·4 claims
- 0342US4310344AMethod and apparatus for the adiabatic expansion of liquid anhydrous ammoniaRESEARCH CORP·Filed 1979·Granted Jan 12, 1982·7 cites·11 claims
- 0431US4310555AMethod and apparatus for the adiabatic expansion of liquid anhydrous ammoniaRESEARCH CORP·Filed 1979·Granted Jan 12, 1982·3 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when William L. Kjelgaard 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 →