Inventor
Naoki Iwama
Inventor
Tokai, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys67%
F16CShafts17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
7,445,680'Lead-free steel for machine structural use with excellent machinability and low strength anisotropy'20087,195,736'Lead-free steel for machine structural use with excellent machinability and low strength anisotropy'20076,886,984'Bearing device for internal combustion engines'20055,362,338'Non-heat treating steel for hot forging'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994Patents assigned to AICHI STEEL WORKS LTD (1)· patent assignee history
1994Based in Chita, JP· patent location history
2005Patents assigned to DAIDO METAL CO (1)· patent assignee history
2005–2008Based in Tokai, JP· patent location history
2007–2008Patents assigned to SANYO SPECIAL STEEL CO LTD (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SANYO SPECIAL STEEL CO LTD | 2 | 2007–2008 |
| AICHI STEEL WORKS LTD | 1 | 1994 |
| DAIDO METAL CO | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokai, JP | 3 | 2005–2008 |
| Chita, JP | 1 | 1994 |