David C. Chang

Person

Springfield, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Electrically conductive coatings applied by internally charged elec...
- Patent number 6,689,457
- Issue date Feb 10, 2004
- E. I. Du Pont de Nemours and Company
- David C. K. Chang
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Aqueous coating composition of a self-stabilized crosslinked latex
- Patent number 5,955,532
- Issue date Sep 21, 1999
- E. I. Du Pont de Nemours and Company
- David C.K. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Stable aqueous aluminum flake dispersion
- Patent number 5,104,922
- Issue date Apr 14, 1992
- E. I. Du Pont de Nemours and Company
- David C. K. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Waterborne basecoat/high solids clear finish for automotive substra...
- Patent number 5,100,735
- Issue date Mar 31, 1992
- E. I. Du Pont de Nemours and Company
- David C. K. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Amino methyl propanol blocked aromatic sulfonic acid
- Patent number 4,812,506
- Issue date Mar 14, 1989
- E. I. Du Pont de Nemours and Company
- Thomas C. Gilmer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for improving the appearance of a multilayer finish
- Patent number 4,731,290
- Issue date Mar 15, 1988
- E. I. Du Pont de Nemours and Company
- David C. K. Chang
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Substrate coated with crater resistant acrylic enamel
- Patent number 4,396,680
- Issue date Aug 2, 1983
- E. I. Du Pont de Nemours & Co.
- David C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Crater resistant acrylic enamel
- Patent number 4,371,657
- Issue date Feb 1, 1983
- E. I. Du Pont de Nemours and Company
- David C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes for the preparation of polymeric thickeners and uses thereof
- Patent number 4,230,844
- Issue date Oct 28, 1980
- E. I. Du Pont de Nemours and Company
- David C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Clear coat/color coat finish containing an antioxidant and an ultra...
- Patent number 4,208,465
- Issue date Jun 17, 1980
- E. I. Du Pont de Nemours and Company
- David C. Chang
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Polymeric thickeners, processes for their preparation and uses thereof
- Patent number 4,138,381
- Issue date Feb 6, 1979
- E. I. Du Pont de Nemours and Company
- David C. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

David C. Chang

Person

Patents Grantslast 30 patents

Electrically conductive coatings applied by internally charged elec...

Aqueous coating composition of a self-stabilized crosslinked latex

Stable aqueous aluminum flake dispersion

Waterborne basecoat/high solids clear finish for automotive substra...

Amino methyl propanol blocked aromatic sulfonic acid

Process for improving the appearance of a multilayer finish

Substrate coated with crater resistant acrylic enamel

Crater resistant acrylic enamel

Processes for the preparation of polymeric thickeners and uses thereof

Clear coat/color coat finish containing an antioxidant and an ultra...

Polymeric thickeners, processes for their preparation and uses thereof