John R. Dahlberg

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Jeannette, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for cutting hot glass
- Patent number 4,891,054
- Issue date Jan 2, 1990
- PPG Industries, Inc.
- Jack A. Bricker
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Robot end effector to transfer shaped parts
- Patent number 4,623,296
- Issue date Nov 18, 1986
- PPG Industries, Inc.
- Kenneth J. McGuire
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method of and apparatus for sideward displacement of sheets
- Patent number 4,352,447
- Issue date Oct 5, 1982
- PPG Industries, Inc.
- Robert M. Bonaddio
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method of simultaneously opening two scores transverse to one another
- Patent number 4,225,070
- Issue date Sep 30, 1980
- PPG Industries, Inc.
- John R. Dahlberg
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of and apparatus for preventing premature severing of scored...
- Patent number 4,196,830
- Issue date Apr 8, 1980
- PPG Industries, Inc.
- James L. Oravitz
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Oilless fluid for scoring glass
- Patent number 4,084,737
- Issue date Apr 18, 1978
- PPG Industries, Inc.
- Harold R. Gorman
- C03 - GLASS MINERAL OR SLAG WOOL