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. 06, 1977
Filed:
Jul. 26, 1976
Applicant:
Inventors:
William J Schultz, Vadnais Heights, MN (US);
Samuel Smith, Roseville, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260873 ; 428457 ;
Abstract
Process for preparing linear terminally differentially electrophilically reactive prepolymers by reacting cyclic ethers or lactones comprising a major proportion of tetramethylene oxide with an initiator represented by the asymmetrical structure