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:
Mar. 22, 1977
Filed:
May. 10, 1974
Applicant:
Inventors:
Leon Goldstein, Rehovot, IL;
Ephraim Katzir (Katchalski), Rehovot, IL;
Yehuda Levin, Tel-Aviv, IL;
Shmaryahu Blumberg, Rishon Lezion, IL;
Assignee:
Yeda Research & Development Co. Ltd., Rehovot, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07G / ;
U.S. Cl.
CPC ...
195 63 ; 195 68 ; 195D / ; 426 36 ; 426 42 ; 526 15 ; 526 50 ; 526 51 ; 526271 ;
Abstract
Enzymes are convalently found to anionic or cationic hydrophilic polymeric carriers formed by essentially complete reaction of pendent anhydride groups of ethylene-maleic anhydride copolymer (EMA) with a diamine selected from the group consisting of hydrazine, P, P'-diaminodiphenylmethane and 1,6-diaminohexane to produce resins having pendent amine groups. The EMA-hydrazide and EMA- P,P'-diaminodiphenylmethane resins can be rendered cationic by reaction with N,N-dimethyl-1,3-propanediamine.