JPS527879A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Method of forming high hardness film on carbon tool steel or alloy too l steel
Assignee: Shinko Seiki Co Ltd
•
Filing: 1975-07-09
•
Granted: —
•
Expires: 1995-07-09
Abstract
Abstract PURPOSE:A method of forming a beautiful high-hardness film on the surfaces of a tool material while maintaining the surface treatment temperature of the tool material at 230 deg.C or under.
Inventors
- 👤 Yasushi Kawashita
- 👤 Masami Nakasone
- 👤 Akira Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-05 17:23
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/0021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
JPS4922385A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.