MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517081167 A) filed by Nippon Steel Corporation; and Vallourec Oil And Gas France, Tokyo, on Aug. 27, for 'threaded joint for steel pipes.'
Inventor(s) include Inose, Keita; Ogawa, Masahiro; Morishige, Yuya; Kurio, Satoshi; and Maruta, Satoshi.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "This threaded joint comprises a pin (10) and a box (20). The pin (10) and box (20) fastened together comprise a threaded portion (101), an interior seal portion (102), and an exterior seal portion (103). A value Lth of the ratio of the amount of interference dth of the threaded portion (101) to tan (?th) when the slope angle of the threaded portion (101) is ?th, a value Lint of the ratio of the amount of interference dint of the interior seal portion (102) to tan(?int), when the slope angle of the interior seal portion (102) is ?int, and a value Lext of the ratio of the amount of interference dext of the exterior seal portion (103) to tan(?ext), when the slope angle of the exterior seal portion (103) is ?ext, satisfy condition (1) or condition (2) below. Lth Lext and Lint ? Lth (1); Lth Lint and Lext ? Lth (2)."
The patent application was internationally filed on Sept. 12, 2023, under International application No.PCT/JP2023/033179.
Disclaimer: Curated by HT Syndication.
