Inventor · disambiguated record
Bret F. Hann
Also filed as: HANN BRET · HANN BRET F
14 granted patents·104 citations·filing 1993–2011
91Inventor score
Top patents by PatentIndex Score
14 records- 0197US8728593B2Polyvinyl alcohol films with improved resistance to oxidizing chemicalsVICARI RICHARD·Filed 2010·Granted May 20, 2014·49 cites·8 claims
- 0293US7745517B2Polyvinyl alcohol films with improved resistance to oxidizing chemicalsSEKISUI SPECIALTY CHEMICALS AM·Filed 2006·Granted Jun 29, 2010·22 cites·6 claims
- 0383US9142835B2Separator film for batteries including oxidation resistant vinyl alcohol copolymerVICARI RICHARD·Filed 2008·Granted Sep 22, 2015·5 cites·23 claims
- 0476US7388069B2Method to purify poly(vinyl alcohol)CELANESE INT CORP·Filed 2005·Granted Jun 17, 2008·3 cites·18 claims
- 0572US7524924B2Method to purify poly(vinyl alcohol)CELANESE INT CORP·Filed 2008·Granted Apr 28, 2009·2 cites·13 claims
- 0668US8772220B2Chemical delivery product and process for making the sameVICARI RICHARD·Filed 2007·Granted Jul 8, 2014·1 cites·48 claims
- 0762US5347051AProcesses for preparing aminesHOECHST CELANESE CORP·Filed 1994·Granted Sep 13, 1994·6 cites·13 claims
- 0852US5424387ADi-amino compounds and processes for preparing the sameHOECHST CELANESE CORP·Filed 1994·Granted Jun 13, 1995·4 cites·22 claims
- 0950US5300691ASubstituted benzyl aminesHOECHST CELANESE CORP·Filed 1993·Granted Apr 5, 1994·3 cites·4 claims
- 1048US10316124B2Cold water soluble polyvinyl alcohol/alkyl acrylate copolymers and films thereofVICARI RICHARD·Filed 2011·Granted Jun 11, 2019·0 cites·21 claims
- 1141US5312990ADi-amino compoundsHOECHST CELANESE CORP·Filed 1993·Granted May 17, 1994·3 cites·4 claims
- 1240US5346983ASubstituted phenyl compounds and processes for preparing the sameHOECHST CELANESE CORP·Filed 1993·Granted Sep 13, 1994·3 cites·6 claims
- 1336US5399766AAmines and processes for preparing the sameHOECHST CELANESE CORP·Filed 1994·Granted Mar 21, 1995·2 cites·4 claims
- 1433US5347049AProcesses for preparing diamino compoundsHOECHST CELANESE CORP·Filed 1994·Granted Sep 13, 1994·1 cites·13 claims
Join the waitlist — get patent alerts
Get an alert when Bret F. Hann 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 →