US3038824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passivation of reactive metal surfaces
Assignee: NUCLEAR Corp OF AMERICA Inc
•
Filing: 1958-05-15
•
Granted: 1962-06-12
•
Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Virgil F Novy
- 👤 Craig G Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:42
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A METHOD OF PASSIVATING THE POLISHED SURFACE OF A RARE EARTH METAL WHICH COMPRISES TREATING THE POLISHED SURFACE WITH A SOLVENT CAPABLE OF REMOVING THEREFROM ALL TRACES OF MATERIAL PRESENT ON SAID SURFACE AFTER THE POLISHING OPERATION TO REMOVE SAID MATERIAL FROM THE SURFACE, APPLYING AN OXIDIZING AGENT TO THE THUS TREATED SURFACE, AND REMOVING THE DEPOSIT FORMED BY THE OXIDISING AGENT, BY TREATING SAID SURFACE WITH A SOLVENT FOR SAID DEPOSIT, AND DRYING THE SURFACE.
Claim 2
Independent Claim
76 words
A METHOD OF PASSIVATING THE POLISHED SURFACE OF A RARE EARTH METAL WHICH COMPRISES TREATING THE POLISHED SURFACE WITH A SOLVENT CAPABLE OF REMOVING THEREFROM ALL TRACES OF MATERIAL PRESENT ON SAID SURFACE AFTER THE POLISHING OPERATION TO REMOVE SAID MATERIAL FROM THE SURFACE, APPLYING AN OXIDIZING AGENT TO THE THUS TREATED SURFACE, AND REMOVING THE DEPOSIT FORMED BY THE OXIDISING AGENT, BY TREATING SAID SURFACE WITH A SOLVENT FOR SAID DEPOSIT, AND DRYING THE SURFACE.
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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |