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:
Mar. 26, 1996
Filed:
May. 23, 1994
Applicant:
Inventor:
Ching-Ping Wong, Lawrenceville, NJ (US);
Assignee:
AT&T Corp., Murray Hill, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; H01H / ;
U.S. Cl.
CPC ...
528498 ; 29428 ; 200341 ; 361601 ; 361622 ; 361680 ; 525474 ; 528 10 ;
Abstract
Problems resulting from contamination of electronic apparatus used with silicone keypads can be eliminated or substantially reduced by soaking such keypads prior to assembly in a low molecular weight liquid hydrocarbon, particularly n-hexane. Such soaking removes low molecular weight unreactive cyclics from the keypad which might otherwise contaminate the electronic apparatus.