JPS5247702A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Process for producing a recording medium of magnetic iron oxide
Assignee: Fujitsu Ltd
•
Filing: 1975-10-14
•
Granted: —
•
Expires: 1995-10-14
Abstract
Abstract PURPOSE: To obtain a magnetic disc or the like having a ferrite film thicker than that obtained by chemical deposition process; this being achieved by coating a liquid in which sol precipitation is initiated, and treating the obtained coating by application of heat. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Seiya Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-05 18:38
CPC Classifications
—
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.