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:
Dec. 13, 1994
Filed:
Dec. 16, 1993
Applicant:
Inventor:
Paul E Thoma, Cedarburg, WI (US);
Assignee:
Johnson Service Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ; H01L / ;
U.S. Cl.
CPC ...
252512 ; 252511 ; 252514 ; 252502 ; 252518 ; 106-118 ; 106-125 ;
Abstract
An electrically conductive composition useful, for example, in screen printing applications, includes a thermoplastic resin binder, electrically conductive particles and a solvent. The preferred composition includes a polysulfone thermoplastic resin, silver flakes or carbon black as the conductive particles and butyrophenone as the solvent. The preferred manufacturing process includes adding the resin in two batches at separate time periods during the mixing of the components. The composition is particularly suitable for fusion at high temperatures, such as in screen printed electrical contacts for use in capacitance humidity sensors.