IP Library › Granted Patent US 4,704,153
Granted Patent Utility
US 4,704,153 · App. 06/895,647

Vacuum refining of glassy materials with controlled foaming

Inventors: Ronald L. Schwenninger, Joseph M. Matesa
Patented Case View Patent ↗
Granted: Nov 3, 1987 Filed: Aug 12, 1986
Inventors
Ronald L. Schwenninger
Joseph M. Matesa
Assignee (at issue)
PPG Industries, Inc.

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Quick Facts
Patent No.
US 4,704,153
App. No.
06/895,647
Filed
1986-08-12
Granted
1987-11-03
Kind
A