US3536479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of high purity osmium
Assignee: Huntington Alloys Corp
•
Filing: 1967-12-13
•
Granted: 1970-10-27
•
Expires: 1987-12-13
Abstract
No abstract record available.
Inventors
- 👤 Alexander Illis
- 👤 Alan Manson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:52
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371119A
Cited
US2044366A
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US3150960A
Cited
US3390981A
Cited
US3238038A
Cited
US3413114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |