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:
Feb. 17, 1998
Filed:
Jul. 03, 1996
Applicant:
Inventors:
Joaquin Delgado, Stillwater, MN (US);
Spencer F Silver, White Bear Lake, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5263232 ; 526263 ; 526264 ; 526298 ; 5263077 ; 5263184 ; 526320 ; 526328 ; 5263285 ; 428 368 ; 428402 ;
Abstract
The invention relates to a swellable, solvent-insoluble, tack-free, elastomeric, acrylate microsphere having a shear storage modulus of at least 6.0.times.10.sup.6 Pascals at 23.degree. C. and 1 Hz and a Tg of less than about 0.degree. C., wherein the microsphere comprises the polymerization product of: