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. 20, 2001
Filed:
Dec. 04, 1998
Adele Shipston, Williamsville, NY (US);
David K. Rice, II, Sanborn, NY (US);
Moore U.S.A., Inc., Grand Island, NY (US);
Abstract
Linerless postage stamps are produced by coating a paper substrate on the bottom surface with pressure sensitive adhesive, and coating the substrate on the top surface with release material, such as silicone, which includes an effective amount of stamp cancellation ink retaining particles, so that when the release coat and particles are contacted by stamp cancellation ink the particles will retain sufficient stamp cancellation ink so that the ink is visible on the top face and will not be wiped off during normal handling. The particles may comprise fumed silica, colloidal silica, kaolin clay, aluminum oxide, wollastonite, talc, calcium carbonate, titanium dioxide, or combinations thereof. Stamp indicia is typically provided on the top of the substrate underneath the release coat.