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:
Jun. 23, 1981
Filed:
Nov. 02, 1979
Applicant:
Inventor:
Terry L Wolfe, Tyrone, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 26 ; 65106 ; 65273 ; 6537 / ;
Abstract
Applying a boron nitride composition to a flexible fiber glass fabric cover for a press bending mold for shaping heat-softened glass sheets having a portion painted with a composition consisting essentially of a finely divided frit-pigment mixture by impregnating at least the portion of the cover that engages the painted portion of the glass sheet reduces the likelihood of marking the press bent glass sheet in unwanted regions. In addition, such impregnation facilitates removing the press bending molds from the press bent glass sheet when the press bending molds are separated after engaging the heat-softened glass sheet.