Fred M. Ernsberger

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Low temperature reduction process for large photomasks
- Patent number 4,407,891
- Issue date Oct 4, 1983
- PPG Industries, Inc.
- Fred M. Ernsberger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of operating a float glass forming chamber to reduce drippage
- Patent number 4,406,682
- Issue date Sep 27, 1983
- PPG Industries, Inc.
- Fred M. Ernsberger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Low temperature reduction process for photomasks
- Patent number 4,390,592
- Issue date Jun 28, 1983
- PPG Industries, Inc.
- Fred M. Ernsberger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for making stained glass photomasks from photographic emulsion
- Patent number 4,309,495
- Issue date Jan 5, 1982
- PPG Industries, Inc.
- Fred M. Ernsberger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for making stained glass photomasks using stabilized glass
- Patent number 4,286,052
- Issue date Aug 25, 1981
- PPG Industries, Inc.
- Fred M. Ernsberger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Stained glass photomasks and method of making by electrodealkalization
- Patent number 4,285,988
- Issue date Aug 25, 1981
- PPG Industries, Inc.
- Fred M. Ernsberger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electromigration method for making stained glass photomasks
- Patent number 4,155,735
- Issue date May 22, 1979
- PPG Industries, Inc.
- Fred M. Ernsberger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Electron bombardment method for making stained glass photomasks
- Patent number 4,144,066
- Issue date Mar 13, 1979
- PPG Industries, Inc.
- Fred M. Ernsberger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Fred M. Ernsberger

Person

Patents Grantslast 30 patents

Low temperature reduction process for large photomasks

Method of operating a float glass forming chamber to reduce drippage

Low temperature reduction process for photomasks

Method for making stained glass photomasks from photographic emulsion

Method for making stained glass photomasks using stabilized glass

Stained glass photomasks and method of making by electrodealkalization

Electromigration method for making stained glass photomasks

Electron bombardment method for making stained glass photomasks