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:
Aug. 05, 1997
Filed:
Apr. 04, 1996
John James Felten, Chapel Hill, NC (US);
Walter Raymond Hertler, Kennett Square, PA (US);
Sheau-Hwa Ma, Chadds Ford, PA (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A non-photoformable composition for use as the first unpatterned layer in a diffusion patterning process consisting essentially of: A. a film-forming solid organic polymer having no free acid groups containing a plurality of acid liable groups which are acid reactive; B. a plasticizer in which the solid organic polymer is incompletely soluble; C. volatile organic solvent, the ratio of polymer to plasticizer being such that when the volatile organic solvent is removed from the organic medium, the resulting solvent-free polymer/plasticizer dispersion is specularly nonreflective; and D. finely divided particles of dielectric solids.