Visvanathan Ramanathan

Person

Basel, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Azo dyes prepared using 2-alkylamino-3-cyano-4,6-diaminopyridines a...
- Patent number 5,196,521
- Issue date Mar 23, 1993
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Anthraquinoylcarboxylic acid hydrazides, curable compositions and u...
- Patent number 4,927,865
- Issue date May 22, 1990
- Ciba-Geigy Corporation
- Rudolf Duthaler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted anthraquinones and use thereof in epoxy resins
- Patent number 4,924,015
- Issue date May 8, 1990
- Ciba-Geigy Corporation
- Frederick H. Howell
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Anthraquinoylcarboxylic acid hydrazides, curable compositions and u...
- Patent number 4,855,084
- Issue date Aug 8, 1989
- Ciba-Geigy Corporation
- Rudolf Duthaler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Basic water-soluble bis-(.beta.-azo-.alpha.-naphtholamino)-triazine...
- Patent number 4,654,384
- Issue date Mar 31, 1987
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Cationic benzothiazole disazo compounds
- Patent number 4,581,445
- Issue date Apr 8, 1986
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Disazo compounds containing a 6-acetoacetamide-1-naphthol-3-sulfoni...
- Patent number 4,562,247
- Issue date Dec 31, 1985
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Disazo bis-benzthiazolyl compounds
- Patent number 4,517,358
- Issue date May 14, 1985
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Disperse diaminopyridine-3-azo dyestuffs
- Patent number 4,208,324
- Issue date Jun 17, 1980
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Azo dyestuffs having a carboxyl group and a substituted sulfonylimi...
- Patent number 4,179,435
- Issue date Dec 18, 1979
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Styryl dyestuffs containing certain amino, cyanopyridine moieties
- Patent number 4,116,965
- Issue date Sep 26, 1978
- Ciba-Geigy Corporation
- Nalin Binduprasad Desai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Azo dyestuffs having a carboxyl group and an iminosulfonamido, imin...
- Patent number 4,115,381
- Issue date Sep 19, 1978
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
3-Cyano-1,2,4-thiadiazolyl-5-czo dyestuffs
- Patent number 4,101,541
- Issue date Jul 18, 1978
- Ciba-Geigy Corporation
- Jean Claude Petitpierre
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the manufacture of nitroaminopyridines
- Patent number 4,091,025
- Issue date May 23, 1978
- Ciba-Geigy AG
- Ulrich Schlesinger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Disazo pyrazolyl dyed polyester fibers
- Patent number 4,083,688
- Issue date Apr 11, 1978
- Ciba-Geigy AG
- Visvanathan Ramanathan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polycyclic compounds
- Patent number 4,084,053
- Issue date Apr 11, 1978
- Ciba-Geigy Corporation
- Nalin Binduprasad Desai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Nitro-5-azopyridine dyestuffs
- Patent number 4,068,085
- Issue date Jan 10, 1978
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Transfer printing process for hydrophilic fibrous material
- Patent number 4,033,716
- Issue date Jul 5, 1977
- Ciba-Geigy AG
- Raymond Defago
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Fiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) a...
- Patent number 4,033,943
- Issue date Jul 5, 1977
- Ciba-Geigy Corporation
- Visvanathan Ramanathan
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Monoazo compounds
- Patent number 3,971,740
- Issue date Jul 27, 1976
- Ciba-Geigy AG
- Nalin Binduprasad Desai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which co...
- Patent number 3,966,706
- Issue date Jun 29, 1976
- Ciba-Geigy AG
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for dyeing and printing textile materials of synthetic orga...
- Patent number 3,964,862
- Issue date Jun 22, 1976
- Ciba-Geigy AG
- Purushottam Janardan Kangle
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Polyester fibers dyed with a disazo disperse dyestuff
- Patent number 3,954,398
- Issue date May 4, 1976
- Ciba-Geigy AG
- Visvanathan Ramanathan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heterocyclic azo compounds containing a quaternated hydrazide group
- Patent number 3,945,991
- Issue date Mar 23, 1976
- Ciba-Geigy AG
- Visvanathan Ramanathan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Azo compounds, their manufacture and use
- Patent number 3,932,122
- Issue date Jan 13, 1976
- Ciba-Geigy AG
- Visvanathan Ramanathan
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Visvanathan Ramanathan

Person

Patents Grantslast 30 patents

Azo dyes prepared using 2-alkylamino-3-cyano-4,6-diaminopyridines a...

Anthraquinoylcarboxylic acid hydrazides, curable compositions and u...

Substituted anthraquinones and use thereof in epoxy resins

Anthraquinoylcarboxylic acid hydrazides, curable compositions and u...

Basic water-soluble bis-(.beta.-azo-.alpha.-naphtholamino)-triazine...

Cationic benzothiazole disazo compounds

Disazo compounds containing a 6-acetoacetamide-1-naphthol-3-sulfoni...

Disazo bis-benzthiazolyl compounds

Disperse diaminopyridine-3-azo dyestuffs

Azo dyestuffs having a carboxyl group and a substituted sulfonylimi...

Styryl dyestuffs containing certain amino, cyanopyridine moieties

Azo dyestuffs having a carboxyl group and an iminosulfonamido, imin...

3-Cyano-1,2,4-thiadiazolyl-5-czo dyestuffs

Process for the manufacture of nitroaminopyridines

Disazo pyrazolyl dyed polyester fibers

Polycyclic compounds

3-Nitro-5-azopyridine dyestuffs

Transfer printing process for hydrophilic fibrous material

Fiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) a...

Monoazo compounds

2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which co...

Process for dyeing and printing textile materials of synthetic orga...

Polyester fibers dyed with a disazo disperse dyestuff

Heterocyclic azo compounds containing a quaternated hydrazide group

Azo compounds, their manufacture and use