BOPI 10 BR/2023 REPERTOIRE NUMERIQUE 16 (11) 21189 (51) F16L 15/04 (2018.01) (21) 1202200173 - PCT/JP2020/047836 (22) 22/12/2020 (30) JP n° 2020-005811 du 17/01/2020 (54) Threaded coupling for pipe. (72) OKU, Yousuke (JP) et MARUTA, Satoshi (JP) (73) 1-NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, TOKYO 1008071 (JP) et 2-VALLOURREC OIL AND GAS FRANCE, 54 rue Anatole France, AULNOYE-AYMERIES 59620 (FR) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS Sarl, The House of Gideon, Golf/Bastos Quarters, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM) (57) In a threaded connection for pipe with a two-step thread construction, including intermediate shoulders, during stabbing, the internal-pressure sealing surface of the pin near its tip is prevented from contacting the intermediate shoulder of the box and thus receiving damage. LP, LB, hp and Iib shown in FIG. 2 satisfy Expressions (1) and (2), provided below. 0seal is the angle of slope of the straight line connecting the two ends, as determined along the axial direction, of the internal-pressure sealing surface of the pin. Expression (3), provided below, is also satisfied. L P <L B … (1) h B <h P +(L B -L P )×tanθ seal … (2) LSPB-LP … (3) Fig. 2 Consulter le mémoire ________________________________________ (11) 21190 (51) A01N 43/54 (2018.01); C07D 239/22 (2018.01); C07D 239/54 (2018.01); C07D 409/10(2018.01) (21) 1202200177 - PCT/CN2020/135784 (22) 11/12/2020 (30) CN n° 202010028477.6 du 11/01/2020; CN n° 202010077193.6 du 24/01/2020; CN n° 202010117877.4 du 25/02/2020; CN n° 202010281666.4 du 10/04/2020 (54) Carboxylic acid derivative-substituted imino aryl compound, preparation method therefor, herbicidal composition and use thereof. (72) LIAN, Lei (CN); PENG, Xuegang (CN); HUA, Rongbao (CN);
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