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. 07, 1995
Filed:
Oct. 22, 1993
Jurgen M Grasshoff, Hudson, MA (US);
John L Marshall, Somerville, MA (US);
Richard A Minns, Arlington, MA (US);
Mark R Mischke, Arlington, MA (US);
Anthony J Puttick, Arlington, MA (US);
Lloyd D Taylor, Lexington, MA (US);
Stephen J Telfer, Arlington, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
Acid can be generated by exposing a superacid precursor to actinic radiation effective to generate superacid from the superacid precursor and heating the superacid in admixture with a secondary acid generator capable of undergoing thermal decomposition to produce a secondary acid. The superacid catalyzes decomposition of the secondary acid generator, thus increasing the quantity of strong acid present in the medium. The resultant secondary acid can be used to effect a color change in an acid-sensitive material, so providing an imaging process.