Inventor · disambiguated record
Hans Hettel
Also filed as: HETTEL HANS
13 granted patents·1 pending application·184 citations·filing 1982–2006
92Inventor score
Top patents by PatentIndex Score
14 records- 0189US4493909APoly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a process for the production thereofBAYER AG·Filed 1982·Granted Jan 15, 1985·27 cites·16 claims
- 0286US5023280AProcess for the production of polyurethane foamsBAYER AG·Filed 1989·Granted Jun 11, 1991·32 cites·15 claims
- 0381US4977194AProcess for the preparation of polyurethane foamsBAYER AG·Filed 1989·Granted Dec 11, 1990·27 cites·24 claims
- 0477US4618706AProcess for the preparation of aromatic polyisocyanates containing urea and/or biuret groupsBAYER AG·Filed 1982·Granted Oct 21, 1986·13 cites·4 claims
- 0574US5977198AProcess for the production of resilient, flexible polyurethane foamsBAYER AG·Filed 1998·Granted Nov 2, 1999·27 cites·14 claims
- 0672US4456709APolyisocyanate mixtures, process for their production and their use in the production of polyurethane plasticsBAYER AG·Filed 1983·Granted Jun 26, 1984·20 cites·6 claims
- 0761US4668734AStable dispersions of polyureas and/or polyhydrazo-dicarbonamides in relatively high molecular weight hydroxyl-group containing materials, a process for the production thereof and the use thereof for the production of polyurethane plasticsBAYER AG·Filed 1985·Granted May 26, 1987·12 cites·12 claims
- 0847US5104905AProcess for the preparation of polyurethane foamsBAYER AG·Filed 1989·Granted Apr 14, 1992·6 cites·11 claims
- 0944US5104906AProcess for the preparation of polyurethane foamsBAYER AG·Filed 1991·Granted Apr 14, 1992·5 cites·11 claims
- 1042US4546116AProcess for the production of highly elastic foams containing urethane groups and foams obtainable by this processBAYER AG·Filed 1984·Granted Oct 8, 1985·8 cites·20 claims
- 1142US2007238796A1Process for the preparation of PIPA polyolsLOVENICH CATHERINE J·Filed 2006·Application pending·0 cites
- 1239US5017623AProcess for the preparation of polyurethane foamsBAYER AG·Filed 1989·Granted May 21, 1991·5 cites·14 claims
- 1335US5158987AProcess for the preparation of highly elastic polyurethane flexible foams and their use as upholstery materialBAYER AG·Filed 1991·Granted Oct 27, 1992·2 cites·13 claims
- 1429US4981878AProcess for the production of heat curable flexible polyurethane molded foamsBAYER AG·Filed 1989·Granted Jan 1, 1991·0 cites·8 claims
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