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:
Nov. 29, 1983
Filed:
Feb. 12, 1982
Applicant:
Inventor:
Anthony R Maistrovich, Lake Elmo, MN (US);
Assignee:
Minnesota Mining & Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B32B / ; B41M / ;
U.S. Cl.
CPC ...
427161 ; 427146 ; 427180 ; 427203 ; 427245 ; 427246 ; 427261 ; 428195 ; 428206 ; 4283159 ; 4283175 ; 4283179 ; 4283211 ; 428338 ;
Abstract
Improved sheet material of the type where a base sheet is provided with an opaque microvoid-containing layer which can be locally transparentized by applying a colorless liquid which is a non-solvent for the layer. Indicia remain more sharply defined by including in the layer an organic polymer which jellifies in the presence of the liquid and blocks lateral migration.