US3219474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coatings for columbium and its alloys
Assignee: Individual
•
Filing: 1962-05-11
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Granted: 1965-11-23
•
Expires: 1982-05-11
Abstract
No abstract record available.
Inventors
- 👤 Priceman Seymour
- 👤 Sama Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/58; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12743; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF COATING COLUMBIUM AND COLUMBIUM BASE ALLOYS FOR PROTECTION AGAINST OXIDATION IN AIR AT TEMPERATURES FROM ABOUT 1100*F. TO 2300*F. THAT CONSISTS IN THE STEPS OF: (A) CLEANING THE SURFACE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND ITS ALLOYS, (B) TITANIZING THE SURFACE OF THE METAL TO ESTABLISH THEREON A TITANTIUM RICH ZONE 1 TO 5 MILS IN THICKNESS, AND
Claim 2
Independent Claim
66 words
THE METHOD OF COATING COLUMBIUM AND COLUMBIUM BASE ALLOYS FOR PROTECTION AGAINST OXIDATION IN AIR AT TEMPERATURES FROM ABOUT 1100*F. TO 2300*F. THAT CONSISTS IN THE STEPS OF: (A) CLEANING THE SURFACE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND ITS ALLOYS, (B) TITANIZING THE SURFACE OF THE METAL TO ESTABLISH THEREON A TITANTIUM RICH ZONE 1 TO 5 MILS IN THICKNESS, AND
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |