John David Hildreth

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Henbury Nr. Macclesfield, GB

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Patents Grantslast 30 patents

Information Patent Grant
Catalytic reduction of 2-nitronaphthalene-4,8-disulfonic acid ammon...
- Patent number 4,299,779
- Issue date Nov 10, 1981
- Clayton Aniline Co., Ltd.
- John D. Hildreth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo...
- Patent number 4,266,939
- Issue date May 12, 1981
- Ciba-Geigy Corporation
- John D. Hildreth
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Production of 2,4- and 2,6-diaminotoluenes
- Patent number 4,256,671
- Issue date Mar 17, 1981
- Clayton Aniline Company, Ltd.
- John D. Hildreth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Dyestuff preparations and processes for their production
- Patent number 4,111,649
- Issue date Sep 5, 1978
- Ciba-Geigy AG
- Frank Ward
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE