Inventor
Yoshiichi Ishizawa
Inventor
Kawasaki, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys31%
C21DModifying the physical structure of ferrous metals23%
F16LPipes15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling8%
B23KSoldering or unsoldering8%
PatentTitleYear
5,653,899'Method of making a steel pipe by electric resistance heating of opposing edges of a sheet prior to laser welding'19975,496,421'High-strength martensitic stainless steel and method for making the same'19965,431,748'Electric-resistance-welded steel pipe with high strength'19955,286,309'Electric-resistance-welded steel pipe with high strength'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1997Patents assigned to NIPPON KOKAN KK (4)· patent assignee history
1994–1997Based in Kawasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON KOKAN KK | 4 | 1994–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 4 | 1994–1997 |