Paul F. Duffer

Person

Creighton, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of applying interleaving material to glass sheets
- Patent number 4,606,946
- Issue date Aug 19, 1986
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Acidified powdered interleaving
- Patent number 4,568,605
- Issue date Feb 4, 1986
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Acidified powdered interleaving
- Patent number 4,530,889
- Issue date Jul 23, 1985
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method of applying interleaving material to glass sheets
- Patent number 4,529,648
- Issue date Jul 16, 1985
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Two step interleaving method
- Patent number 4,489,106
- Issue date Dec 18, 1984
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Mixed acid stain inhibitor
- Patent number 4,487,807
- Issue date Dec 11, 1984
- PPG Industries, Inc.
- Paul F. Duffer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Organotin surface treatment and interleaving material for glass sheets
- Patent number 4,447,496
- Issue date May 8, 1984
- PPG Industries, Inc.
- Helmut Franz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Organotin surface treatment and interleaving material for glass sheets
- Patent number 4,360,544
- Issue date Nov 23, 1982
- PPG Industries, Inc.
- Helmut Franz
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method for making dimethyltin difluoride
- Patent number 4,254,046
- Issue date Mar 3, 1981
- PPG Industries, Inc.
- Helmut Franz
- C07 - ORGANIC CHEMISTRY

Paul F. Duffer

Person

Patents Grantslast 30 patents

Method of applying interleaving material to glass sheets

Acidified powdered interleaving

Acidified powdered interleaving

Method of applying interleaving material to glass sheets

Two step interleaving method

Mixed acid stain inhibitor

Organotin surface treatment and interleaving material for glass sheets

Organotin surface treatment and interleaving material for glass sheets

Method for making dimethyltin difluoride