Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9829127 | Threaded joint for steel pipes | Masaaki Sugino | 2017-11-28 |
| 8857857 | Threaded joint for steel pipes | Kunio Goto, Shigeo Onishi, Hiroaki Ikegami | 2014-10-14 |
| 8800381 | Test apparatus for a threaded joint for oil country tubular goods | Chiaki Akamatsu, Yasuhiro Yamamoto | 2014-08-12 |
| 8622091 | Protector for tubular threaded joint | Yasuhiro Yamamoto, David W. Clem | 2014-01-07 |
| 8276946 | Threaded joint for steel tubes | Masanari Kimoto, Kunio Goto, Masaru Takahashi, Kunihiro Fukui, Ryuichi Imai +2 more | 2012-10-02 |
| 8113055 | Method for evaluating fastening state of threaded joint of pipes or tubes and method for fastening threaded joint of pipes or tubes using the method | Ikuji Hoshino, Masaki Yamano | 2012-02-14 |
| 8091425 | Ultrasonic testing method of threaded joint of pipes or tubes | Ikuji Hoshino, Masaki Yamano | 2012-01-10 |
| 8038179 | Threaded joint for steel pipes | Takahiro Takano, Masaaki Sugino, Takahiro Hamamoto, Suguru Yamaguchi | 2011-10-18 |
| 7997627 | Threaded joint for steel pipes | Masaaki Sugino, Miyuki Yamamoto, Michihiko Iwamoto, Pierre Dutilleul, Gabriel Roussie +1 more | 2011-08-16 |
| 7740285 | Threaded joint for steel pipes | Kunio Goto, Shigeo Onishi, Hiroaki Ikegami | 2010-06-22 |
| 7494159 | Threaded joint for steel pipes | Masaaki Sugino, Miyuki Yamamoto, Michihiko Iwamoto | 2009-02-24 |
| 7360798 | Threaded joint for steel pipes | Keishi Matsumoto, Kunio Goto, Toshiro Anraku, Hideo Yamamoto | 2008-04-22 |
| 6869111 | Lubricating coating composition suitable for lubrication of a threaded joint | Kunio Goto, Hideo Yamamoto | 2005-03-22 |
| 6755444 | Slim-type threaded joint for oil well pipes | Katsutoshi Sumitani, Jun Maeda | 2004-06-29 |
| 6698802 | Pipe joint | Jun Maeda, Katsutoshi Sumitani | 2004-03-02 |
| 6659509 | Threaded joint for steel pipes | Kunio Goto, Keishi Matsumoto, Kazuyuki Nakasuji, Toshiro Anraku | 2003-12-09 |
| 5649725 | Thread joint for tube | Kenichi Ohyabu, Jun Maeda, Akira Narita | 1997-07-22 |
| 5419595 | Threaded joint for oil well pipes | Miyuki Yamamoto | 1995-05-30 |
| 5137310 | Assembly arrangement using frustoconical screwthreads for tubes | Thierry Noel | 1992-08-11 |