IP Library › Granted Patent US 4,282,023
Granted Patent Utility
US 4,282,023 · App. 06/174,469

Glass melting enhancement by toroidal batch shaping

Inventors: Joseph J. Hammel, John Devin MacKenzie
Patented Case View Patent ↗
Granted: Aug 4, 1981 Filed: Aug 1, 1980
Inventors
Joseph J. Hammel
John Devin MacKenzie
Assignee (at issue)
PPG Industries, Inc.

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Quick Facts
Patent No.
US 4,282,023
App. No.
06/174,469
Filed
1980-08-01
Granted
1981-08-04
Kind
A