Inventor
Wolfgang Bauer
Inventor
Maintal, DE
Overview
Patents· 50 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments33%
C07DHeterocyclic compounds14%
C09DCoating compositions, e.g. paints, varnishes or lacquers14%
C07CAcyclic or carbocyclic compounds8%
D06PDyeing or printing textiles7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
D21HPulp compositions5%
A61KPreparations for medical, dental or toiletry purposes3%
A61QSpecific use of cosmetics or similar toiletry preparations3%
A01NPreservation of bodies of humans or animals or plants or parts thereof2%
PatentTitleYear
6,464,768'Water-soluble stilbene dyes, their preparation and use'20026,432,185'Red acid dyes for injet printing and paper dyeing'20026,406,527'Water-soluble red acid dyes, their preparation and use'20026,359,131'Process for preparing dioxazine compounds'20026,274,749'High-temperature resistant sulfonated aromatic polyether ketone cation exchangers and sulfonated poly (phenylene sulfide) cation exchangers as catalysts at reaction temperature above 150.degree. C'20015,981,766'Process for the preparation of 4,4\'-dimethyl-6,6\'-dichlorothioindigo'19995,961,668'4-(2,4-diaminophenoxymethyl)-1,3-dioxolane secondary intermediates, processes for their production, and hair colorants'19995,948,910'Water-soluble perylene dyestuffs, their preparation and their use'19995,932,727'Process for the preparation of dioxazine compounds'19995,922,086'Hair colorants based on perimidine derivatives'19995,902,884'Process for preparing N-alkylcarbazoles'19995,882,360'Water-soluble copper phthalocyanine dyestuffs, their preparation and their use'19995,783,710'Benzothioxanthene dyes, their preparation and their use'19985,767,292'Processes for preparing 1-methoxy-2-propyl 3-(7-diethylamino-2-oxo-2H-chromen-3-yl)-3-oxopropionate'19985,668,260'Tetrakisazo Compounds, the method of preparation thereof and the process of pyeing'19975,613,985'Hair coloring compositions which contain developers and perimidine couplers'19975,597,387'Water-soluble polyazo dyestuffs'19975,510,489'Method of preparing 1-amino-2, 6-dimethylpiperidine'19965,508,467'Process for the preparation of hydroxyalkylaminonitrobenzene derivatives'19965,383,961'Water-soluble sulphur dyes, their preparation and use'19955,374,302'Water-insoluble sulphur dyes, their preparation and use'19945,368,637'Water-insoluble sulphur dyes, their preparation and use'19945,347,019'Process for the preparation of 4-(2-aminophenylthio)naphthalic anhydride derivatives'19945,280,128'Process for the preparation of benzothioxanthene dyestuffs'19945,240,466'Dyeing leather with water-insoluble sulphur dyes'19935,110,917'Water-soluble trisazo dyes'19924,973,672'Water-soluble aminonaphthol disazo dyestuffs, their preparation and their use'19904,923,887'Liquid formulations of 1,2-benzisothiazolin-3-one, their preparation and their use'19904,918,221'Process for preparing 2,5-dichlorophenylthioglycollic acid'19904,917,731'Water-soluble black trisazo dyestuffs'19904,902,826'Process for the preparation of 2-arylthiobenzoic acids'19904,881,977'Water-soluble yellow monoazo dyestuffs'19894,871,754'Aqueous formulation of 1,2-benzisothiazolin-3-one'19894,810,254'Wet-fastness properties of sulphur dyestuffs dyeings on cellulose treated with poly-di-allyl-ammonium salt'19894,769,454'Process for the preparation of N-methylol-caprolactam'19884,686,303'Process for the preparation of diaryl sulphides'19874,548,987'ABS-Polycarbonate mixtures which have improved flame resistance'19854,486,350'Process for the preparation of sulphur dyestuffs of the phthalocyanine series'19844,485,042'Dyestuff containing at least three azo bridges'19844,348,204'Aqueous dyestuff formulation, a process for its preparation and its use for dyeing and printing'19824,329,503'Process for the preparation of 2-amino-4-nitrophenol'19824,254,026'Water-soluble monoazo dyestuffs'19814,242,802'Drawing pattern for the human form'19814,225,492'Water-soluble disazo dyestuffs, prepared from unsymmetrical heterocyclic diamines'19804,192,947'Process for the production of aminophenylaminobenzimidazoles'19804,144,230'Soluble trisazo dyestuffs containing a 2-phenyl-benzimidazolyl, -benzoxazolyl or -benzthiazolyl middle component'19794,144,231'Soluble trisazo dyestuffs containing a 2-phenyl-benzimidazolyl, -benzoxazolyl or -benzthiazolyl middle component'19794,143,033'Water-soluble disazo dyestuffs containing a 2-phenyl-benzimidazolyl,-benzoxazolyl or-benzthiazolyl middle component'19794,137,228'Water-soluble, copper containing trisazo compounds having a 2-(4\'phenylene)-benzimidazoyl-(5 or 6),-benzoxazolyl-(5), or -benzthiazolyl-(5) component'19794,033,945'Water-soluble trisazo 8-amino-naphthol-1 dyes'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1996Patents assigned to CASSELLA FARBWERKE MAINKUR AG (22)· patent assignee history
1977–2002Based in Maintal, DE· patent location history
1980–1995Patents assigned to CASSELLA AG (6)· patent assignee history
1981Based in Leonberg, DE· patent location history
1985–1990Patents assigned to BAYER AG (3)· patent assignee history
1985Based in Krefeld, DE· patent location history
1988Based in Leverkusen, DE· patent location history
1997–1998Patents assigned to HOECHST AG (4)· patent assignee history
1999–2002Patents assigned to CLARIANT GMBH (10)· patent assignee history
2001Based in Hattersheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CASSELLA FARBWERKE MAINKUR AG | 22 | 1977–1996 |
| CLARIANT GMBH | 10 | 1999–2002 |
| CASSELLA AG | 6 | 1980–1995 |
| HOECHST AG | 4 | 1997–1998 |
| BAYER AG | 3 | 1985–1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Maintal, DE | 46 | 1977–2002 |
| Hattersheim, DE | 1 | 2001 |
| Leverkusen, DE | 1 | 1988 |
| Krefeld, DE | 1 | 1985 |
| Leonberg, DE | 1 | 1981 |