US3341307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation resistant niobium
Assignee: Individual
•
Filing: 1965-05-25
•
Granted: 1967-09-12
•
Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Tarr Charles Oliver
- 👤 Ray C Lever
- 👤 Carl S Wukusick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:08
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0475; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOSITE OXIDATION RESISTANT REFRACTORY ARTICLE COMPRISING A POROUS NIOBIUM SKELETON HAVING A LOW MELTING ALUMINUM, CHROMIUM, SILICON, AND TITANIUM ALLOY DISPERSED IN SAID SKELETON.
Claim 2
Dependent Claim
25 words
A COMPOSITE OXIDATION RESISTANT REFRACTORY ARTICLE COMPRISING A POROUS NIOBIUM SKELETON HAVING A LOW MELTING ALUMINUM, CHROMIUM, SILICON, AND TITANIUM ALLOY DISPERSED IN SAID SKELETON.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |