Inventor · disambiguated record
Klaus Hunger
Also filed as: HUENGER KLAUES · HUNGER KLAUES · HUNGER KLAUS · LANDLER JOSEF
40 granted patents·204 citations·filing 1972–1989
97Inventor score
Top patents by PatentIndex Score
40 records- 0189US4082741ADisazo pigments derived from 3,8-diamino-phenanthridone-(10)HOECHST AG·Filed 1976·Granted Apr 4, 1978·15 cites·10 claims
- 0286US4251441APigments of mixtures of methoxynitrobenzene-azo-methoxy-acetanilidesHOECHST AG·Filed 1979·Granted Feb 17, 1981·13 cites·2 claims
- 0385US4405793A1,3,4-OxadiazolesHOECHST AG·Filed 1979·Granted Sep 20, 1983·17 cites·3 claims
- 0484US4906735AProcess for the manufacture of a monoazo acetoacetylaminobenzimidazoloneHOECHST AG·Filed 1989·Granted Mar 6, 1990·17 cites·8 claims
- 0581US4033980APhthalocyanine dyestuffs and process for preparing themHOECHST AG·Filed 1972·Granted Jul 5, 1977·10 cites·3 claims
- 0680US4195020ADichloro-phenyl-azo-acetoacetylamino-benzimidazolone pigmentsHOECHST AG·Filed 1979·Granted Mar 25, 1980·9 cites·4 claims
- 0779US4370269AMonoazo pigment derived from acetoacetylamino benzimidazoloneHOECHST AG·Filed 1976·Granted Jan 25, 1983·11 cites·1 claims
- 0876US3974136AModified form of a disazo pigmentHOECHST AG·Filed 1974·Granted Aug 10, 1976·8 cites·1 claims
- 0970US4139527AFiber reactive monoazo dyestuffs containing a --SO2 --CH2 --CH2 --O--PO3 H2 groupHOECHST AG·Filed 1973·Granted Feb 13, 1979·6 cites·9 claims
- 1069US4665163ADiaryl pigments with improved heat stability obtained by coupling bis-diazotized diamines with acetoacetanilidesHOECHST AG·Filed 1983·Granted May 12, 1987·9 cites·3 claims
- 1168US4476052AAzo pigment having improved hiding power and a process for its preparationHOECHST AG·Filed 1982·Granted Oct 9, 1984·8 cites·18 claims
- 1267US4302389AAzo compounds deriving from amino benzoic acid anilides and acetoacetylamino-benzimidazoloneHOECHST AG·Filed 1979·Granted Nov 24, 1981·5 cites·1 claims
- 1365US4686287ADisazo compounds derived from acetoacetylamino-benzimidazol-2-onesHOECHST AG·Filed 1985·Granted Aug 11, 1987·14 cites·9 claims
- 1462US4005068ADisazo compounds from diphenylene sulfones and acetoacetylbenzimidazolonesHOECHST AG·Filed 1974·Granted Jan 25, 1977·4 cites·3 claims
- 1561US4504416AAzo compounds deriving from amino benzoic acid anilides and acetoacetylamino-benzimidazoloneHOECHST AG·Filed 1981·Granted Mar 12, 1985·5 cites·1 claims
- 1660US4045428AWater-soluble reactive naphthylazonaphthyl dyestuffsHOECHST AG·Filed 1975·Granted Aug 30, 1977·5 cites·4 claims
- 1758US4169830ADiamino-benzanilide disazo coloring agentsHOECHST AG·Filed 1977·Granted Oct 2, 1979·4 cites·8 claims
- 1856US4150046AAzamethine-CU complex compounds, process for their preparation and their useHOECHST AG·Filed 1978·Granted Apr 17, 1979·4 cites·15 claims
- 1956US4096157AAzamethine metal complex compoundsHOECHST AG·Filed 1976·Granted Jun 20, 1978·4 cites·9 claims
- 2055US4302388AMonoazo compounds deriving from meta-amino-benzoic acid anilides and acetoacetyl amino-benzimidazoloneHOECHST AG·Filed 1979·Granted Nov 24, 1981·3 cites·5 claims
- 2152US3980635ANovel form of the disazo pigment from bisdiazotized 3,3'-dichlorobenzidine and 1-(p-tolyl)-3-methylpyrazol-5-oneHOECHST AG·Filed 1975·Granted Sep 14, 1976·3 cites·1 claims
- 2250US4607096AAzo pigments obtained by diazotizing in a dipolar aprotic organic solventHOECHST AG·Filed 1982·Granted Aug 19, 1986·4 cites·7 claims
- 2350US4056553A3-Amino-4-carboalkoxy-benzoic acid 4'-phenoxy-anilidesHOECHST AG·Filed 1976·Granted Nov 1, 1977·3 cites·8 claims
- 2449US4987258A4,4'-diaminodiphenyl compounds, process for their preparation and their useHOECHST AG·Filed 1987·Granted Jan 22, 1991·6 cites·8 claims
- 2547US3947516ANovel aromatic aldehydes and process for preparing themHOECHST AG·Filed 1974·Granted Mar 30, 1976·2 cites·14 claims
- 2644US4720541AProcess for improving the application properties of disazo pigmentsHOECHST AG·Filed 1984·Granted Jan 19, 1988·2 cites·8 claims
- 2744US4555568AMonoazo compounds derived from 3-nitro-4-amino-benzoates and 5-(2'-hydroxy-3'-naphthoylamino)-benzimidazolonesHOECHST AG·Filed 1980·Granted Nov 26, 1985·2 cites·2 claims
- 2842US4182708AProcess for the preparation of azo pigments by diazotizing in a dipolar aprotic organic solvent and azo pigments obtained therefromHOECHST AG·Filed 1977·Granted Jan 8, 1980·2 cites·7 claims
- 2941US4973672AWater-soluble aminonaphthol disazo dyestuffs, their preparation and their useCASSELLA FARBWERKE MAINKUR AG·Filed 1989·Granted Nov 27, 1990·2 cites·5 claims
- 3041US4131733AWater-insoluble azomethine compoundsHOECHST AG·Filed 1977·Granted Dec 26, 1978·1 cites·10 claims
- 3137US4056522AAzo compounds deriving from 3-amino-4-lower carboalkoxy-benzoic acid-4'-phenoxy anilides and 2-hydroxy-3-naphthoic acid-4'-benzoylamino anilidesHOECHST AG·Filed 1976·Granted Nov 1, 1977·1 cites·10 claims
- 3237US3966704ANaphthylazo naphthyl copper complex dyestuffsHOECHST AG·Filed 1973·Granted Jun 29, 1976·1 cites·1 claims
- 3336US4589921AProcess for improving the application properties of pigment yellow 13HOECHST AG·Filed 1985·Granted May 20, 1986·1 cites·8 claims
- 3433US4074053AAldehydes of 2-hydroxy-naphthalene-3-carboxylic acid arylidesHOECHST AG·Filed 1976·Granted Feb 14, 1978·0 cites·2 claims
- 3532US4677200AAmino compounds derived from 5-acetoacetylamino-benzimidazolonesHOECHST AG·Filed 1985·Granted Jun 30, 1987·2 cites·2 claims
- 3631US4041036AWater-insoluble colorants, process for preparing them and their useHOECHST AG·Filed 1976·Granted Aug 9, 1977·0 cites·9 claims
- 3730US4987221ABisdiazonium salts of 4,4'-diamino-3,3'-dialkoxybiphenyls and a process for their preparationHOECHST AG·Filed 1986·Granted Jan 22, 1991·0 cites·5 claims
- 3830US4696675AProcess for preparing water-insoluble blue azo dyes on the fiber: hydroxynaphthoic amide and diazotized di-alkoxy-benzidineHOECHST AG·Filed 1986·Granted Sep 29, 1987·1 cites·22 claims
- 3930US4368155AMonoazo compounds derived from meta-amino-benzoic acid anilides and acetoacetylamino-benzimidazoloneHOECHST AG·Filed 1981·Granted Jan 11, 1983·0 cites·1 claims
- 4025US4287122AMonoazo compounds from 1-aminobenzene-2-carboxylic acid derivatives and their use as colorantsHOECHST AG·Filed 1977·Granted Sep 1, 1981·0 cites·3 claims
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