Inventor
Hirotake Ishitobi
Inventor
Chiba, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Dprimary
C21DModifying the physical structure of ferrous metals40%
C22CAlloys20%
C23CCoating metallic material15%
Y10TTechnical subjects covered by former us classification15%
C25DProcesses for the electrolytic or electrophoretic production of coatings5%
H01FMagnets5%
PatentTitleYear
5,885,374'Process for producing grain oriented silicon steel sheet and decarburized sheet'19995,725,681'Process for producing grain oriented silicon steel sheet, and decarburized sheet'19985,620,533'Method for making grain-oriented silicon steel sheet having excellent magnetic properties'19975,472,520'Method of controlling oxygen deposition during decarbutization annealing on steel sheets'19955,306,353'Method of producing grain oriented silicon steel sheets having less iron loss'19945,125,991'Silicon steel sheets having low iron loss and method of producing the same'19924,963,197'Grain oriented electromagnetic steel sheets having a very low iron loss and method of producing the same'19904,906,530'Grain oriented electromagnetic steel sheets having a very low iron loss'19904,548,868'Surface treatment of zinc alloy electroplated steel strips'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1999Patents assigned to KAWASAKI STEEL CO (9)· patent assignee history
1985–1994Based in Chiba, JP· patent location history
1995–1999Based in Okayama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KAWASAKI STEEL CO | 9 | 1985–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chiba, JP | 5 | 1985–1994 |
| Okayama, JP | 4 | 1995–1999 |