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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.:

US 4514456 B1

PDFFull Text
Date of Patent:
Apr. 30, 1985

Filed:

Sep. 20, 1982

Method of making a coded marking in a glass workpiece employing a

Applicant:
Inventors:

Samuel B Deal, Lancaster, PA (US);

Barry M Cushman, Lancaster, PA (US);

Assignee:

RCA Corporation, Princeton, NJ (US);

Attorneys:

Whitacre; Eugene M.

Irlbeck; Dennis H.

Greenspan; LeRoy

Primary Examiner:

Marion E McCamish

Assistant Examiner:

P R Schwartz

Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428204 ; 427 531 ; 427 64 ; 427165 ; 427270 ; 427271 ; 428206 ; 428208 ; 428210 ; 428212 ; 428428 ; 428446 ;
Abstract

An undercoating is deposited on a glass workpiece and an overcoating is applied upon the undercoating. Then a plurality of related marks is recessed through the overcoating, thereby producing the novel workpiece. Each of the undercoating and overcoating is comprised of pigment particles and an alkali silicate binder. The alkali silicate binder of at least one coating, and preferably both the undercoating and the overcoating, consists essentially of a mixture of sodium silicate, potassium silicate and lithium silicate. The coatings are made from aqueous suspensions of pigment particles, dissolved sodium silicate, dissolved potassium silicate and lithium-stabilized silica sol.

Find Patent Forward Citations

Deal, Samuel. (1985). Method of making a coded marking in a glass workpiece employing a (U.S. Patent No. 4514456). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4514456

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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