US3085980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic material
Assignee: US Philips Corp
•
Filing: 1959-06-01
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Granted: 1963-04-16
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Expires: 1979-06-01
Abstract
No abstract record available.
Inventors
- 👤 Gorter Evert Willem
- 👤 Schulkes Johannes Antonius
- 👤 Verweel Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:20
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2641; C04B35/2675
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A FERROMAGNETIC MATERIAL HAVING A CRYSTAL STRUCTURE SIMILAR TO THAT OF THE MINERAL GARNET AND A COMPOSITION ACCORDING TO THE FORMULA
Claim 2
Dependent Claim
21 words
A FERROMAGNETIC MATERIAL HAVING A CRYSTAL STRUCTURE SIMILAR TO THAT OF THE MINERAL GARNET AND A COMPOSITION ACCORDING TO THE FORMULA
References Cited (Backward Citations)
GB763494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |