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:
May. 04, 1982
Filed:
Oct. 27, 1980
Gordhanbhai N Patel, Morris Plains, NJ (US);
Ray H Baughman, Morris Plains, NJ (US);
Allied Corporation, Morristown, NJ (US);
Abstract
A printing or reproducing or pressure-detecting process comprising producing on a substrate a surface consisting essentially of a colored acetylenic composition of partially polymerized monomer which has at least two triple bonds which are conjugated, and having certain substituents in the molecule; preferably 5,7-dodecadiyn-1,12-bis(p-bromophenyl urethane) monomer. When subjected to impact or pressure, these surfaces change color sharply; e.g. an orange surface comprising the above bromophenyl urethane monomer, partially polymerized, changes sharply and instantly to blue in those precise areas where struck by a typewriter letter-face.