US2865088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory metal bodies
Assignee: Fansteel Inc
•
Filing: 1952-10-16
•
Granted: 1958-12-23
•
Expires: 1972-10-16
Abstract
No abstract record available.
Inventors
- 👤 Leonard F Yntema
- 👤 Ivor E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:37
CPC Classifications
C; C23; C23C; C23C8/00; C23C24/00; C23C24/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AS AN ARTICLE OF MANUFACTURE, A REFRACTORY METAL BODY RESISTANT TO OXIDATION AT ELEVATED TEMPERATURE COMPRISING A MOLYBDENUM BASE HAVING AN EXTERIOR LAYER COMPOSED PREDOMINANTLY OF AN ALLOY OR INTERMETALLIC COMPOSITION OF MOLYBDENUM, SILICON AND CHROMIUN IN THE APPROXIMATE PROPORTIONS OF 59% MOLYBDENUM, 37% SILICON AND 4% CHROMIUM.
Claim 2
Dependent Claim
48 words
AS AN ARTICLE OF MANUFACTURE, A REFRACTORY METAL BODY RESISTANT TO OXIDATION AT ELEVATED TEMPERATURE COMPRISING A MOLYBDENUM BASE HAVING AN EXTERIOR LAYER COMPOSED PREDOMINANTLY OF AN ALLOY OR INTERMETALLIC COMPOSITION OF MOLYBDENUM, SILICON AND CHROMIUN IN THE APPROXIMATE PROPORTIONS OF 59% MOLYBDENUM, 37% SILICON AND 4% CHROMIUM.
References Cited (Backward Citations)
US1180614A
Cited
US1228194A
Cited
US1774849A
Cited
US1745939A
Cited
US2257668A
Cited
US2236209A
Cited
US2491866A
Cited
US2650903A
Cited
US2541813A
Cited
US2612442A
Cited
US2690409A
Cited
US2683305A
Cited
US2665475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |