US2873196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust preventative and anti-rust stabilizing compositions
Assignee: EIDP Inc
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Filing: 1956-04-16
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Granted: 1959-02-10
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Expires: 1976-04-16
Abstract
No abstract record available.
Inventors
- 👤 Melvin M Baevsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:51
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PREPARING URANIUM OF EXTREMELY HIGH PURITY FROM IMPURE URANIUM CONSISTING IN PASSING A HALOGEN CONTINOUSLY OVER THE MASS TO FORM URANIUM CONSIST ESSENTIALLY OF (A) AN ALIPHATIC ACID ESTER OF ORTHOPHOSPHORIC ACID, THE ALIPHATIC RADICALS OF WHICH CONTAIN FROM 8 TO 22 CARBON ATOMS, SAID ALIPHATIC RADICALS BEING TAKEN FROM THE GROUP CONSISTING OF N-ALKYL AND N-ALKENYL A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM HYPOPHOSPHITE AND STANNOUS CHLORIDE, SAID REDUCING AGENT BEING PRESENT IN THE AMOUNT OF 1% TO 10% OF THE SAID ACID ESTER OF ORTHO-PHOSPHORIC ACID.
Claim 2
Independent Claim
94 words
THE METHOD OF PREPARING URANIUM OF EXTREMELY HIGH PURITY FROM IMPURE URANIUM CONSISTING IN PASSING A HALOGEN CONTINOUSLY OVER THE MASS TO FORM URANIUM CONSIST ESSENTIALLY OF (A) AN ALIPHATIC ACID ESTER OF ORTHOPHOSPHORIC ACID, THE ALIPHATIC RADICALS OF WHICH CONTAIN FROM 8 TO 22 CARBON ATOMS, SAID ALIPHATIC RADICALS BEING TAKEN FROM THE GROUP CONSISTING OF N-ALKYL AND N-ALKENYL A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM HYPOPHOSPHITE AND STANNOUS CHLORIDE, SAID REDUCING AGENT BEING PRESENT IN THE AMOUNT OF 1% TO 10% OF THE SAID ACID ESTER OF ORTHO-PHOSPHORIC ACID.
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) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |