The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Oct. 31, 1988
Applicant:
Inventors:
Ronald L Schwenninger, Ridgeley, WV (US);
David A Hanekamp, Cumberland, MD (US);
Homer R Foster, Kittanning, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65134 ; 65 325 ; 65135 ; 65136 ; 65141 ;
Abstract
In a process for refining molten glass or the like by vacuum, the collapse of foam is accelerated by periodically applying a surge of pressure that disrupts foam stability. Preferably, the surge is a short pulse of lower pressure.
Schwenninger, Ronald. (1989). Pulsed pressure method for vacuum refining of glassy materials (U.S. Patent No. 4849004). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4849004
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile