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:
Apr. 08, 1997
Filed:
Jul. 20, 1995
Applicant:
Inventor:
Saburo Akiyama, Kuwana, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 212 ; 285284 ; 156294 ; 219544 ;
Abstract
An electric welding pipe joint made of a thermoplastic resin and containing a heating resistance wire therein may be produced by forming an inner cylindrical thermoplastic resin member by injection molding, winding a heating resistance wire around the inner cylindrical thermoplastic resin member, and forming two or more layers of an outer cylindrical thermoplastic resin member around the resistance wire-wound inner cylindrical member by injection molding successively.
Quick Actions:
Akiyama, Saburo. (1997). Electric welding pipe joint having a two layer outer member (U.S. Patent No. 5618065). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5618065
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile