US2681876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory coated article
Assignee: International Standard Electric Corp
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Filing: 1949-01-24
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Granted: 1954-06-22
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Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Santis Vincent J De
- 👤 Fred L Hunter
- 👤 Charles P Majkrzak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:14
CPC Classifications
C; C25; C25D; C25D13/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/936; Y10S428/937; Y10S428/938; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A COMPOSITE STRUCTURE THAT COMPRISES A REFRACTORY METAL BASE FORMED OF A METAL CHOSEN FROM THE CLASS CONSISTING OF TANTALUM, COLUMBIUM, MOLYBDENUM, TUNGSTEN AND ALLOYS IN WHICH AT LEAST ONE OF SAID METALS IS THE PREDOMINANT COMPONENT AND A HARD CRYSTALLINE BARRIER LAYER UPON THE BASE THAT COMPRISES REFRACTORY CARBIDES CONSISTING ESSENTIALLY OF ZIRCONIUM CARBIDE AND A CARBIDE CHOSEN FROM THE CLASS CONSISTING OF THE CARBIDES OF TANTALUM, COLUMBIUM, MOLYBDENUM AND TUNGSTEN.
Claim 2
Dependent Claim
72 words
A COMPOSITE STRUCTURE THAT COMPRISES A REFRACTORY METAL BASE FORMED OF A METAL CHOSEN FROM THE CLASS CONSISTING OF TANTALUM, COLUMBIUM, MOLYBDENUM, TUNGSTEN AND ALLOYS IN WHICH AT LEAST ONE OF SAID METALS IS THE PREDOMINANT COMPONENT AND A HARD CRYSTALLINE BARRIER LAYER UPON THE BASE THAT COMPRISES REFRACTORY CARBIDES CONSISTING ESSENTIALLY OF ZIRCONIUM CARBIDE AND A CARBIDE CHOSEN FROM THE CLASS CONSISTING OF THE CARBIDES OF TANTALUM, COLUMBIUM, MOLYBDENUM AND TUNGSTEN.
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) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |