Howard L. Smith

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Douglassville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Acid yellow dye and method for using same
- Patent number 6,045,593
- Issue date Apr 4, 2000
- Howard L. Smith
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Sulfonated naptho[1,2]triazole azo barbituric acid derivatives
- Patent number 4,285,861
- Issue date Aug 25, 1981
- Crompton & Knowles Corporation
- David A. Brode
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct...
- Patent number 4,279,814
- Issue date Jul 21, 1981
- Crompton & Knowles Corporation
- Howard L. Smith
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...