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:
Oct. 23, 1984
Filed:
Mar. 02, 1984
Applicant:
Inventor:
Harold H Freedman, Newton Center, MA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12N / ; C07G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
435181 ; 2601 / ; 2601 / ; 525 541 ; 527204 ; 528 44 ; 528 68 ; 528424 ;
Abstract
Polyalkylenepolyamines are crosslinked in a non-anhydrous environment to yield water-swellable, essentially water-insoluble gels. The polyalkylenepolyamine is contacted with a polyisocyanate at a pH between about 5 and about 8 and subjected to a high rate of agitation. The process of this invention can be employed to immobilize proteins, enzymes, antibodies, etc.
Freedman, Harold. (1984). Process for crosslinking polyamines (U.S. Patent No. 4478938). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4478938
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile