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:
May. 15, 2018
Filed:
Jan. 11, 2013
Tenaris Connections B.v., Amsterdam, NL;
Tomoyuki Narikawa, Kawasaki, JP;
Tatsuo Ono, Kawasaki, JP;
Koji Sakura, Kawasaki, JP;
Toshihiko Fukui, Kawasaki, JP;
Motohisa Yoshida, Kawasaki, JP;
Takeshi Kuwano, Kawasaki, JP;
Nobuo Kobayashi, Kawasaki, JP;
Nobuhide Sato, Kawasaki, JP;
Tenaris Connections B.V., Amsterdam, NL;
Abstract
Disclosed herein are embodiments of a drill pipe tool joint and a drill pipe which are optimized for repeated make-up/break-out operations without the use of screw grease. Embodiments of the disclosure are environment friendly as well as having improved operating efficiency. In particular, the box and pin can be formed from different materials having different hardness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile