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. 10, 1986
Filed:
Aug. 30, 1984
Applicant:
Inventors:
Assignee:
Nitto Boseki Co., Ltd., Fukushima, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528328 ; 528313 ; 528315 ; 528321 ; 528322 ;
Abstract
A sequential polyamino acid resin having a remarkably high molecular weight and special amino acid sequence as repeating unit in the resin can be produced by conducting polycondensation of a peptide active ester acid salt in an aprotic polar solvent in the presence of a tertiary amine and phosphorus pentoxide.