Inventor · disambiguated record
Hartmut Hetzel
Also filed as: HETZEL HARTMUT
14 granted patents·294 citations·filing 1975–1997
94Inventor score
Top patents by PatentIndex Score
14 records- 0195US4147714AProcess for the preparation of polyisocyanates which contain biuret groupsBAYER AG·Filed 1978·Granted Apr 3, 1979·44 cites·7 claims
- 0290US4051212AProcess for the continuous degradation of plasticsBAYER AG·Filed 1975·Granted Sep 27, 1977·56 cites·5 claims
- 0382US4241043AMethod for evaporating solvents and reacting components in compound mixturesBAYER AG·Filed 1979·Granted Dec 23, 1980·34 cites·3 claims
- 0479US4143072AProcess for the purification of polyethers using a tubular coil evaporatorBAYER AG·Filed 1978·Granted Mar 6, 1979·26 cites·7 claims
- 0576US4482750AProcess for removing alkaline catalysts from polyether polyolsBAYER AG·Filed 1982·Granted Nov 13, 1984·29 cites·9 claims
- 0675US5563296AContinuous process for preparing aromatic aminesBAYER AG·Filed 1994·Granted Oct 8, 1996·35 cites·9 claims
- 0758US3993641AProcess for the production of polyisocyanates containing uretdione groupsBAYER AG·Filed 1975·Granted Nov 23, 1976·11 cites·5 claims
- 0855US6271414B1Process for the isomeric separation of isocyanatesBAYER AG·Filed 1997·Granted Aug 7, 2001·6 cites·11 claims
- 0955US4136967AScrew machine for the continuous degradation of plasticsBAYER AG·Filed 1977·Granted Jan 30, 1979·13 cites·3 claims
- 1043US5609735AProcess and a device for separating a solid residue from its solution in a stirred bed of materialBAYER AG·Filed 1995·Granted Mar 11, 1997·13 cites·7 claims
- 1140US4399236AProcess for separating polyurethane hydrolyzates into polyether and diamineBAYER AG·Filed 1981·Granted Aug 16, 1983·6 cites·10 claims
- 1238US5384034ACandle precoated filter for residual volume filtrationMUELLER DRM AG·Filed 1991·Granted Jan 24, 1995·8 cites·4 claims
- 1337US4992171AFiltering device with agitatorBAYER AG·Filed 1990·Granted Feb 12, 1991·7 cites·3 claims
- 1435US5817211AProcess and device for continuous evaporation to dryness of viscous solutions and suspensions with a tendency to stickBAYER AG·Filed 1996·Granted Oct 6, 1998·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →