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:
Jun. 30, 1987
Filed:
Jul. 30, 1986
Applicant:
Inventor:
Masayuki Mishima, Machida, JP;
Assignee:
Research Development Corp. of Japan, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; B01J / ;
U.S. Cl.
CPC ...
521 62 ; 21050021 ; 2105021 ; 210692 ; 521 63 ; 521 64 ; 521 56 ;
Abstract
A urea adsorbent and a method for its production are disclosed, the adsorbent comprising hollow microspheres each having an outer layer formed of a urea-permeable polymer and an inner layer formed of a polymer containing a polyoxyalkylene glycol derivative expressed by the following formula:
Mishima, Masayuki. (1987). Method of preparing urea adsorbent (U.S. Patent No. 4677135). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4677135
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile