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:
Apr. 17, 2001
Filed:
Jun. 02, 1999
Paul C. Donohue, Wilmington, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A method of forming a distortion-free circuit whereby a conductive composition is applied to at least one layer of green ceramic tape. The conductive composition formulation is based on total composition, conductive powder selected from Ag, Pd, Pt and mixtures thereof and 0.5 to 1.5 wt. % boron; wherein a and b are dispersed in organic medium. The green tape formulation is, based on total composition, 25-50 wt. % glass composition comprising, based on mole %, 50-67% B,O,; 20-50% alkaline earth metal oxide; 2-15% rare earth oxide and 0-6% alkali metal oxide and 0-10% Al,O,; 50-75 wt. % refractory oxide and organic polymeric binder. The assemblage is fired to form a distortion-free circuit.