Inventor · disambiguated record
Hans-Peter Kuhlthau
Also filed as: KUEHLTHAU HANS-PETER · KUHLTHAU HANS-PETER
24 granted patents·121 citations·filing 1969–1983
95Inventor score
Files withBAYER AG24
Top patents by PatentIndex Score
24 records- 0183US4294756ACationic dyestuffsBAYER AG·Filed 1979·Granted Oct 13, 1981·11 cites·10 claims
- 0275US4542224AProcess for preparing cationic methine dyestuffsBAYER AG·Filed 1983·Granted Sep 17, 1985·11 cites·5 claims
- 0371US4039539A1,2,4-Triazole-azo-aniline cationic dyestuffsBAYER AG·Filed 1975·Granted Aug 2, 1977·8 cites·10 claims
- 0471US3980430AProcess for dyeing anionically modified synthetic fiber materialsBAYER AG·Filed 1975·Granted Sep 14, 1976·8 cites·6 claims
- 0567US4051084ACationic dyestuffsBAYER AG·Filed 1975·Granted Sep 27, 1977·7 cites·7 claims
- 0665US4252716ABenzthiazolyl-azo-indole basic dyestuffsBAYER AG·Filed 1979·Granted Feb 24, 1981·6 cites·10 claims
- 0764US4400321AProcess for the preparation of solutions of cationic polyazo dyestuffsBAYER AG·Filed 1981·Granted Aug 23, 1983·7 cites·4 claims
- 0863US4000141ASubstituted tetrahydro quinoline cationic dyestuffsBAYER AG·Filed 1974·Granted Dec 28, 1976·5 cites·9 claims
- 0962US4513142APreparation of cationic methine dyestuffsBAYER AG·Filed 1982·Granted Apr 23, 1985·7 cites·6 claims
- 1061US4598151ACationic dyestuffs, a process for their preparation, and their use for dyeing and mass-coloringBAYER AG·Filed 1982·Granted Jul 1, 1986·4 cites·3 claims
- 1157US4051117ATriazole-azo-phenyl cationic dyestuffsBAYER AG·Filed 1974·Granted Sep 27, 1977·8 cites·22 claims
- 1257US3956264ABasic azo dyestuffs having indolyl-methyleneamino substituent in the diazo componentBAYER AG·Filed 1973·Granted May 11, 1976·4 cites·8 claims
- 1356US4211436APressure-sensitive recording materialBAYER AG·Filed 1978·Granted Jul 8, 1980·13 cites·10 claims
- 1452US4185151ACationic dyestuffsBAYER AG·Filed 1976·Granted Jan 22, 1980·3 cites·5 claims
- 1549US4292238AAlkylation of benzthiazole-azo-phenylamine dyestuffsBAYER AG·Filed 1977·Granted Sep 29, 1981·3 cites·5 claims
- 1649US4042322AProcess for dyeing anionically modified synthetic fiber materialsBAYER AG·Filed 1976·Granted Aug 16, 1977·3 cites·3 claims
- 1745US4542223AProcess for the preparation of cationic methine dyestuffsBAYER AG·Filed 1983·Granted Sep 17, 1985·3 cites·5 claims
- 1842US4376728AProcess for the preparation of cationic alkylarylhydrazone dyestuffs and color bases thereofBAYER AG·Filed 1981·Granted Mar 15, 1983·2 cites·10 claims
- 1942US3991042ABasic azo dyestuffs containing a benzthiazole and a tetrahydroquinoline nucleusBAYER AG·Filed 1973·Granted Nov 9, 1976·2 cites·13 claims
- 2037US4115413ATriaryl-methane dyestuffsBAYER AG·Filed 1969·Granted Sep 19, 1978·2 cites·15 claims
- 2134US4392998AOne pot diazotization, coupling and quaternization of aminotriazolesBAYER AG·Filed 1981·Granted Jul 12, 1983·2 cites·6 claims
- 2234US3948877ABasic benzothiazolyl-azo-quinolinyl dyestuffsBAYER AG·Filed 1973·Granted Apr 6, 1976·1 cites·12 claims
- 2330US4203722ATransfer printing process with naphtholactam dyesBAYER AG·Filed 1978·Granted May 20, 1980·1 cites·10 claims
- 2430US4039526ACationic dyestuffs containing quaternized benzthiazole and p-substituted amino azo phenyl moietiesBAYER AG·Filed 1975·Granted Aug 2, 1977·0 cites·13 claims
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