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:
Jul. 21, 1987
Filed:
Feb. 13, 1986
Applicant:
Inventors:
Josef Matkan, Malvern, AU;
Richard J Treleaven, Toorak Gardens, AU;
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A01N / ; B01J / ; C08G / ;
U.S. Cl.
CPC ...
42840221 ; 71-3 ; 71 6413 ; 71 70 ; 71 71 ; 264-43 ; 264-433 ; 264-47 ; 424D / ; 424409 ; 427150 ; 42721332 ; 42721333 ; 4283215 ; 4284233 ; 514788 ; 514962 ; 514965 ;
Abstract
Particles containing a releasable fill material and method of preparing same. A particle comprises a continuous polyurea surface layer, and an interior portion comprising a polyurea matrix, said matrix having a fill material contained therein, said matrix forming a continuum extending from the surface layer into the interior of the particle. The particles can be prepared by a method comprising: