US3268306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium pretreatment for protective coating of refractory alloys
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1962-03-28
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Granted: 1966-08-23
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Expires: 1982-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jefferys Richard Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
C; C23; C23C; C23C10/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
AN OXIDATION RESISTANT REFRACTORY ARTICLE CONSISTING ESSENTIALLY OF A COLUMBIUM BASE METAL, A FIRST DIFFUSION ZONE CONSISTING ESSENTIALLY OF A TITANIUM-COLUMBIUM ALLOY BONDED TO SAID BASE METAL, A SECOND DIFFUSION ZONE OF CHROMIUM AND SAID COLUMBIUM BASE METAL BONDED TO SAID FIRST DIFFUSION ZONE, AND A LAYER OF A CROMIUM AND TITINIUM ALLOY OVERLYING SAID SECOND DIFFUSION ZONE.
Claim 2
Dependent Claim
58 words
AN OXIDATION RESISTANT REFRACTORY ARTICLE CONSISTING ESSENTIALLY OF A COLUMBIUM BASE METAL, A FIRST DIFFUSION ZONE CONSISTING ESSENTIALLY OF A TITANIUM-COLUMBIUM ALLOY BONDED TO SAID BASE METAL, A SECOND DIFFUSION ZONE OF CHROMIUM AND SAID COLUMBIUM BASE METAL BONDED TO SAID FIRST DIFFUSION ZONE, AND A LAYER OF A CROMIUM AND TITINIUM ALLOY OVERLYING SAID SECOND DIFFUSION ZONE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |