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. 11, 1979
Filed:
Apr. 18, 1975
Peter Koreska, Vienna, AT;
W. Koreska GmbH, Vienna, AT;
Abstract
A duplicating stencil comprising a perforated or porous ink-permeable sheet composed of a synthetic resinous film or a metal sheet or film of aluminum or copper. The perforated or porous ink-permeable sheet is coated with a binding agent coating which coating may contain softeners or fillers. On the binder coating there can be applied a coating of hot-seal adhesive which in turn is overcoated with an infra-red light permeable coating. Alternatively, the hot-seal adhesive coating can be applied to a separate sheet of paper, synthetic resinous film or metallic sheet, over-coated with an infra-red permeable coating and placed together with the sheet coated with the binding agent prior to subjection to infra-red rays.