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:
Dec. 01, 1981
Filed:
Jun. 28, 1979
Applicant:
Inventors:
Tetsuro Shimazaki, Tokyo, JP;
Shun Kamei, Tokyo, JP;
Assignee:
Mitsubishi Paper Mills, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
252316 ; 282 275 ; 424 32 ; 427151 ; 427152 ; 428307 ; 428914 ;
Abstract
Microcapsules containing water-insoluble liquid, of which wall membrane is urea-formaldehyde resin is produced by the addition of a water soluble organic acid, urea and formaldehyde to an emulsion of the liquid, which is made by a nonionic emulsifier and heating the emulsion to effect the polycondensation of urea and formaldehyde.