Inventor
Toshiro Anraku
Inventor
Nishinomiya, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Lprimary
F16LPipes15%
C10MLubricating compositions12%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions12%
C22CAlloys12%
E21BEarth or rock drilling12%
B21BRolling of metal8%
C21DModifying the physical structure of ferrous metals8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
Y10TTechnical subjects covered by former us classification8%
B21JForging4%
PatentTitleYear
7,360,798'Threaded joint for steel pipes'20087,165,431'Cr-plated mandrel bar for manufacturing hot seamless tube and method of manufacturing the same'20076,988,387'Making method for seamless metallic tube'20066,746,057'Threaded joint for steel pipes having improved galling resistance and rust-preventing properties'20046,659,509'Threaded joint for steel pipes'20036,458,318'Heat resistant nickel base alloy'20026,440,234'Martensitic stainless steel products'20026,210,806'Martensitic stainless steel having oxide scale layers'20015,824,264'High-temperature stainless steel and method for its production'19985,660,211'Galvanic corrosion resistant insulating pipe having excellent film adhesion'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2008Patents assigned to SUMITOMO METAL IND (10)· patent assignee history
1997–2002Based in Hyogo, JP· patent location history
1998–2008Based in Nishinomiya, JP· patent location history
2006–2007Based in Tokyo, JP· patent location history
2008Patents assigned to VALLOUREC MANNESMANN OIL & GAS (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO METAL IND | 10 | 1997–2008 |
| VALLOUREC MANNESMANN OIL & GAS | 1 | 2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nishinomiya, JP | 5 | 1998–2008 |
| Hyogo, JP | 3 | 1997–2002 |
| Tokyo, JP | 2 | 2006–2007 |