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.

Date of Patent:
Jan. 06, 1976

Filed:

Oct. 17, 1972
Applicant:
Inventor:

Gerhard R Sprengling, Blairsville, PA (US);

Assignee:

Westinghouse Electric Corporation, Pittsburgh, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ; H05K / ;
U.S. Cl.
CPC ...
174 685 ; 29588 ; 29627 ; 264272 ; 3171 / ; 3171 / ;
Abstract

A printed circuit board is prepared by connecting electronic components to the circuit, coating the board with a layer up to about 0.1 mil thick of a compound of the formula C.sub.n F.sub.2n.sub.+1 C.sub.m X.sub.2m.CHY--OOC--C(R)=CH.sub.2 or its prepolymer, replacing at least one of the electronic components, thermally bonding another electronic component to the circuit, and recoating the area around the new component with a layer of the compound or its prepolymer. In the formula n is 2 to 9, m is 1 to 9, X and Y are H, F Cl, or Br and R is --H or --CH.sub.3. This method enables a printed circuit board to be easily repaired since the coating on the board can be soldered or welded through without first removing the coating or protecting the surrounding coating.


Find Patent Forward Citations

Sprengling, Gerhard. (1976). Printed circuit board and method of preparing it (U.S. Patent No. 3931454). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3931454

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

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