Inventor
Michihiko Iwamoto
Inventor
Wakayama, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling32%
F16LPipes29%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients7%
C09DCoating compositions, e.g. paints, varnishes or lacquers7%
C10MLubricating compositions7%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions7%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding4%
G01BMeasuring length, thickness or similar linear dimensions4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
10,626,345Threaded joint for pipes20209,605,781'Threaded connection comprising at least one threaded element with an end lip for a metal tube'20179,568,125'Threaded joint for steel pipes'20179,321,982'Threaded joint for pipes'20167,997,627'Threaded joint for steel pipes'20117,823,931'Tubular threaded joint'20107,494,159'Threaded joint for steel pipes'20096,286,223'Apparatus and method of measuring outer diameter of worked portion at pipe end'20015,687,999'Threaded joint for tubes'19975,402,688'Method and apparatus for determining the tightened condition of a pipe joint'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2011Patents assigned to SUMITOMO METAL IND (6)· patent assignee history
1995Based in Houston, TX, US· patent location history
1997–2017Based in Wakayama, JP· patent location history
2009–2016Patents assigned to VALLOUREC MANNESMANN OIL & GAS (4)· patent assignee history
2016–2020Patents assigned to NIPPON STEEL & SUMITOMO METAL CORP (4)· patent assignee history
2016–2017Patents assigned to IWAMOTO MICHIHIKO (3)· patent assignee history
2017Patents assigned to BEIGNEUX SYLVAIN (2)· patent assignee history
2020Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO METAL IND | 6 | 1995–2011 |
| NIPPON STEEL & SUMITOMO METAL CORP | 4 | 2016–2020 |
| VALLOUREC MANNESMANN OIL & GAS | 4 | 2009–2016 |
| IWAMOTO MICHIHIKOself | 3 | 2016–2017 |
| BEIGNEUX SYLVAIN | 2 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wakayama, JP | 8 | 1997–2017 |
| Tokyo, JP | 1 | 2020 |
| Houston, Texas, US | 1 | 1995 |