US3697322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium oxide coatings
Assignee: MARINE MAGNESIUM COMPANY A PARTNERSHIP OF PA
•
Filing: 1970-08-17
•
Granted: 1972-10-10
•
Expires: 1990-08-17
Abstract
Abstract LITHIUM ADDITIVES IN MAGNESIUM OXIDE/MAGNESIUM HYDROXIDE COATINGS FOR SILICON STEEL AND THE MATERIAL COATED BY SUCH PROCESS.
Inventors
- 👤 Leonard S Lee
- 👤 Yoshio Uyeda
- 👤 Leo F Heneghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; H01F1/14783; H01F27/00; H01F27/24; H01F41/00; H01F41/02; H01F41/0206
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |