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:
Jul. 18, 1989
Filed:
Jun. 15, 1987
Applicant:
Inventors:
Kanji Watanabe, Hyogo, JP;
Mikio Mizoe, Hyogo, JP;
Assignee:
Sumitomo Electric, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28B / ; E04C / ;
U.S. Cl.
CPC ...
4283215 ; 5222 / ; 52230 ; 52232 ; 52722 ; 57217 ; 57223 ; 264228 ; 264229 ; 428327 ; 428334 ; 428364 ; 428372 ;
Abstract
An elongated prestressing steel material for use in the fabrication of prestressed concrete comprises a steel member and an outer coat of many microcapsules each containing a flowable material in its interior.