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. 12, 1994
Filed:
Sep. 14, 1992
Franklin D Saeva, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A composition of matter including an onium salt and a method of forming images. The onium salt has a chromophore which absorbs ultraviolet radiation, an S, Se, As, N or P atom which is free of substituents exhibiting a higher energy occupied molecular orbital than the chromophore; an insulating group which links the chromophore to the S, Se, As, N or P atom of the salt and substantially prevents .pi. resonance from the chromophore through the S, Se, As, N or P atom; and an anion. The onium salt is capable of forming a Bronsted acid upon exposure to ultraviolet radiation in the presence of a proton source. In the method of forming images, the onium salt is exposed to ultraviolet radiation in the presence of a proton source, to convert said onium salt to a Bronsted acid.