Harold F. Porter

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Hockessin, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Production of sodium perborate crystals having improved abrasion re...
- Patent number 5,215,730
- Issue date Jun 1, 1993
- E. I. Du Pont de Nemours and Company
- Janet M. Rogers
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for shipment of sodium cyanide slurries
- Patent number 4,902,301
- Issue date Feb 20, 1990
- E. I. Du Pont de Nemours and Company
- Janet M. Rogers
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for production of sodium cyanide
- Patent number 4,847,062
- Issue date Jul 11, 1989
- E. I. Du Pont de Nemours and Company
- Janet M. Rogers
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for purifying hexamethylenediamine
- Patent number 4,282,381
- Issue date Aug 4, 1981
- E. I. Du Pont de Nemours and Company
- Oscar R. Buehler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for recovery of products from a waste stream in the manufac...
- Patent number 4,065,486
- Issue date Dec 27, 1977
- E. I. Du Pont de Nemours and Company
- John Anton Thorpe
- C07 - ORGANIC CHEMISTRY