US2770546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal deactivators
Assignee: Universal Oil Products Co
•
Filing: 1954-02-26
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Granted: 1956-11-13
•
Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C08; C08F; C08F2/00; C08F2/38; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/185; C10L1/1857; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/021; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A METHOD OF STABILIZING AN ORGANIC SUBSTANCE AGAINST OXIDATIVE DETERIORATION CATALYZED BY A METAL CONSTITUENT WHICH COMPRISES INCORPORATING IN SAID ORGANIC SUBSTANCE A TROPOLONE COMPOUND.
Claim 2
Independent Claim
25 words
A METHOD OF STABILIZING AN ORGANIC SUBSTANCE AGAINST OXIDATIVE DETERIORATION CATALYZED BY A METAL CONSTITUENT WHICH COMPRISES INCORPORATING IN SAID ORGANIC SUBSTANCE A TROPOLONE COMPOUND.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |