Sandra L. Witman

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-dispersing pigment and process of making and use of same
- Patent number 6,852,156
- Issue date Feb 8, 2005
- E. I. Du Pont de Nemours and Company
- An-Gong Yeh
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of producing stabilized organic pigment particles and device...
- Patent number 6,709,507
- Issue date Mar 23, 2004
- E. I. Du Pont de Nemours and Company
- An-Gong Yeh
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Device for producing stabilized organic pigment particles
- Publication number 20040149169
- Publication date Aug 5, 2004
- An-Gong Yeh
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Method of producing stabilized organic pigment particles and device...
- Publication number 20030077446
- Publication date Apr 24, 2003
- An-Gong Yeh
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Self-dispersing pigment and process of making and use of same
- Publication number 20020014184
- Publication date Feb 7, 2002
- An-Gong Yeh
- C01 - INORGANIC CHEMISTRY