US3318246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphide coating on refractory metals
Assignee: Individual
•
Filing: 1965-03-23
•
Granted: 1967-05-09
•
Expires: 1985-03-23
Abstract
No abstract record available.
Inventors
- 👤 Harley A Wilhelm
- 👤 James H Witte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:53
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN OBJECT OF MANUFACTURE COMPRISING: A SHAPED BODY OF METAL OF THE CLASS CONSISTING OF TANTALUM, NIOBIUM, TUNGSTEN AND ALLOYS PREDOMINATELY OF THESE METALS, THE SURFACE OF WHICH IS COATED WITH A PHOSPHIDE OF THE SAID METAL FORMED IN SITU.
Claim 2
Dependent Claim
40 words
AN OBJECT OF MANUFACTURE COMPRISING: A SHAPED BODY OF METAL OF THE CLASS CONSISTING OF TANTALUM, NIOBIUM, TUNGSTEN AND ALLOYS PREDOMINATELY OF THESE METALS, THE SURFACE OF WHICH IS COATED WITH A PHOSPHIDE OF THE SAID METAL FORMED IN SITU.
References Cited (Backward Citations)
US3090703A
Cited
US3127285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |