Inventor · disambiguated record
Friedhelm Muller
Also filed as: HAMMERSTROM KNUT · MUELLER FRIEDHELM · MULLER FRIEDHELM · SACKMANN GUNTER
30 granted patents·422 citations·filing 1972–2004
97Inventor score
Top patents by PatentIndex Score
30 records- 0185US4250299APolyamines containing amide groupsBAYER AG·Filed 1978·Granted Feb 10, 1981·29 cites·12 claims
- 0282US4048422AProduction of copolymer powders from maleic anhydride and 1-olefinsBAYER AG·Filed 1976·Granted Sep 13, 1977·24 cites·6 claims
- 0381US4151336AProcess for the production of a substantially equimolecular copolymer of maleic acid anhydride and diisobutyleneBAYER AG·Filed 1978·Granted Apr 24, 1979·33 cites·6 claims
- 0481US4029622ANon-aqueous polymer dispersions of water-soluble monomersBAYER AG·Filed 1975·Granted Jun 14, 1977·33 cites·1 claims
- 0578US4319019APolyamines containing amide groupsBAYER AG·Filed 1980·Granted Mar 9, 1982·26 cites·12 claims
- 0678US4282000ADyestuff solutions, their preparation and their use for dyeing paperBAYER AG·Filed 1980·Granted Aug 4, 1981·12 cites·9 claims
- 0777US4198203ADyestuff solutions of copper phthalocyanine derivatives for paper dyeingBAYER AG·Filed 1978·Granted Apr 15, 1980·9 cites·4 claims
- 0876US4173485AProduction of zinc and alkaline earth metal titanatesBAYER AG·Filed 1978·Granted Nov 6, 1979·16 cites·11 claims
- 0976US3932363APolyamines containing acid groupsBAYER AG·Filed 1972·Granted Jan 13, 1976·20 cites·3 claims
- 1069US4152312APaper-sizing agentsBAYER AG·Filed 1974·Granted May 1, 1979·11 cites·1 claims
- 1166US6454840B1Separation-column unit for a gas-chromatograph and method for making the sameSIEMENS AG·Filed 1999·Granted Sep 24, 2002·32 cites·40 claims
- 1265US4888128APaper-coating slips containing fluorescent brightenersBAYER AG·Filed 1987·Granted Dec 19, 1989·23 cites·4 claims
- 1364US4124358ASample-injection device for process gas chromatography with capillary columnsSIEMENS AG·Filed 1977·Granted Nov 7, 1978·17 cites·8 claims
- 1460US5379629AMethod and apparatus for regulating the carrier gas pressure for separation column arrangements in gas chromatographySIEMENS AG·Filed 1989·Granted Jan 10, 1995·19 cites·4 claims
- 1560US4333874ACationic triazinylamino azo dyestuffsBAYER AG·Filed 1980·Granted Jun 8, 1982·6 cites·4 claims
- 1658US4250112APolyalkylenepolyamines containing quaternary dialkylammonium groupsBAYER AG·Filed 1979·Granted Feb 10, 1981·14 cites·5 claims
- 1756US4877328AInternal mixerCONTINENTAL AG·Filed 1988·Granted Oct 31, 1989·20 cites·9 claims
- 1854US4166002APolyamines containing acid groups that are useful in papermakingBAYER AG·Filed 1974·Granted Aug 28, 1979·8 cites·14 claims
- 1953US4254255AAqueous reaction of polyamine with alkylene dihalide in presence of emulsifierBAYER AG·Filed 1979·Granted Mar 3, 1981·8 cites·8 claims
- 2053US4001193AAnionic sizesBAYER AG·Filed 1974·Granted Jan 4, 1977·7 cites·3 claims
- 2149US7544233B2Gas chromatograph with a mass spectrometer situated down therefrom, and method for performing the gas chromatographic/mass spectrometric analysis of a substance mixtureSIEMENS AKTIENGESELLSACHAFT·Filed 2004·Granted Jun 9, 2009·1 cites·4 claims
- 2249US4478681AForgery-proof paperBAYER AG·Filed 1982·Granted Oct 23, 1984·11 cites·2 claims
- 2344US4418175ACationic sizing agents for paperBAYER AG·Filed 1981·Granted Nov 29, 1983·9 cites·4 claims
- 2444US4385000ASurface-active phosphonic acid estersBAYER AG·Filed 1980·Granted May 24, 1983·5 cites·2 claims
- 2540US5166076ADevice and method for sample dosing in gas chromatographySIEMENS AG·Filed 1988·Granted Nov 24, 1992·10 cites·14 claims
- 2640US4113506AEmulsions of resinic acid isocyanates as sizing agents for paperBAYER AG·Filed 1976·Granted Sep 12, 1978·7 cites·3 claims
- 2738US4250298APolyamines containing amide groupsBAYER AG·Filed 1978·Granted Feb 10, 1981·3 cites·17 claims
- 2837US4481319ALow-foam surface sizing agents for paper which contain copolymeric _maleic anhydride semi-amidesBAYER AG·Filed 1982·Granted Nov 6, 1984·5 cites·2 claims
- 2932US4384110APolyamines containing urea groups prepared from lactam or aminocarboxylic acidBAYER AG·Filed 1982·Granted May 17, 1983·2 cites·5 claims
- 3032US4348514APolyamines containing urea groupsBAYER AG·Filed 1980·Granted Sep 7, 1982·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →