Inventor · disambiguated record
John R. Kosak
Also filed as: KOSAK JOHN R
7 granted patents·102 citations·filing 1975–1994
85Inventor score
Files withDU PONT7
Top patents by PatentIndex Score
7 records- 0187US4760187AProcess for reducing chloronitrobenzenes using ruthenium with a minor amount of platinum as the catalystDU PONT·Filed 1987·Granted Jul 26, 1988·28 cites·11 claims
- 0283US5117008ASolvent scrubbing recovery of lactide and other dimeric cyclic estersDU PONT·Filed 1990·Granted May 26, 1992·27 cites·19 claims
- 0377US4020107ACatalytic reduction of halonitroaromatic compoundsDU PONT·Filed 1975·Granted Apr 26, 1977·27 cites·12 claims
- 0464US5449780AProcess for the preparation of 1,3- and 1,5-dialkylpiperidone-2DU PONT·Filed 1994·Granted Sep 12, 1995·9 cites·3 claims
- 0559US5217582AProcess for the isolation of alkyl glyoxylateDU PONT·Filed 1992·Granted Jun 8, 1993·7 cites·20 claims
- 0649US4698438AProcess for the preparation of methyl carbamates and thioimidatesDU PONT·Filed 1986·Granted Oct 6, 1987·4 cites·45 claims
- 0728US4603016ACryogenic brine separation of water and isocyanatesDU PONT·Filed 1985·Granted Jul 29, 1986·0 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when John R. Kosak 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 →