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:
Jun. 30, 1992
Filed:
Jun. 17, 1991
John G Pepin, Newark, DE (US);
Howard W Jacobson, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Finely divided particles of electrically conductive metal having a coating thereon a refractory metal oxide which is insoluble in the electrically conductive metal and non-reducing in the present of the electrically conductive metal, (2) the coating being sufficiently thick that the Isoelectric Point of the coated conductive metal particles is at least 1 unit higher than the Isoelectric Point of particles of the refractory metal oxide, (2) the tap density of the coated metal particles is at least 90% as high as the tap density of the uncoated metal particles, and (3) the metal oxide coating constitutes at least 0.05% by weight of the coated particles.