Alvin Allen

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Claymont, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing coated TiO.sub.2 pigment using cooxidation to...
- Patent number 5,922,120
- Issue date Jul 13, 1999
- E. I. Du Pont de Nemours and Company
- Narayanan Sankara Subramanian
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Process for the addition of boron in a TiO.sub.2 manufacturing process
- Patent number 5,728,205
- Issue date Mar 17, 1998
- E. I. Du Pont de Nemours and Company
- Alvin Allen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
TiO.sub.2 manufacturing process
- Patent number 5,201,949
- Issue date Apr 13, 1993
- E. I. Du Pont de Nemours and Company
- Alvin Allen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
TiO.sub.2 Pigment coated with dense silica and porous alumina/silica
- Patent number 4,075,031
- Issue date Feb 21, 1978
- E. I. Du Pont de Nemours and Company
- Alvin Allen
- C01 - INORGANIC CHEMISTRY