US3549417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making isocoercive magnetic alloy coatings
Assignee: International Business Machines Corp
•
Filing: 1965-11-16
•
Granted: 1970-12-22
•
Expires: 1985-11-16
Abstract
No abstract record available.
Inventors
- 👤 John S Judge
- 👤 John R Morrison
- 👤 Dennis E Speliotis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50; H; H01; H01F; H01F41/00; H01F41/14; H01F41/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |