Patent US3440212A successfully refreshed from Google Patents.
US3440212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-alpha-olefin compositions having improved stability
Assignee: Eastman Kodak Co
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Filing: 1966-08-30
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Granted: 1969-04-22
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Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Tholstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:53
CPC Classifications
C; C08; C08K; C08K5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A COMPOSITION OF AT LEAST ONE NORMALLY SOLID POLYA-OLEFIN DERIVED FROM MONO-A-OLEFINS, A -OLEFIN HAVING 2 TO 10 CARBON ATOMS, AND CONTAINING A SYNERGISTIC STABLIZING AMOUNT OF THE STABILIZER COMPONENTS (A) A DIESTER OF THIODIALKANOIC ACID HAVING THE FORMULA
Claim 2
Dependent Claim
39 words
A COMPOSITION OF AT LEAST ONE NORMALLY SOLID POLYA-OLEFIN DERIVED FROM MONO-A-OLEFINS, A -OLEFIN HAVING 2 TO 10 CARBON ATOMS, AND CONTAINING A SYNERGISTIC STABLIZING AMOUNT OF THE STABILIZER COMPONENTS (A) A DIESTER OF THIODIALKANOIC ACID HAVING THE FORMULA
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |