Patent US2511577A successfully refreshed from Google Patents.
US2511577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of anthracene acid adducts
Assignee: Neville Co
•
Filing: 1946-02-02
•
Granted: 1950-06-13
•
Expires: 1966-02-02
Abstract
No abstract record available.
Inventors
- 👤 Lyle M Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C07; C07C; C07C61/00; C07C61/16; C07C61/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PLASTIC COMPOSITION COMPRISING A HOMOGENEOUS MIXTURE OF A NORMALLY SOLID SYNTHETIC ORGANIC PLOYMER AND A PLASTICIZER, SAID PLASTICIZER BEING A NON-RESINOUS ESTER OF DIELS-ALDER ADDUCT OF ANTHRACENE AND AN ALPHA, BETS ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND A MONOHYDRIC ALIPHATIC ALCOHOL CONTAINING MORE THAN ONE CARBON ATOM.
Claim 2
Dependent Claim
47 words
A PLASTIC COMPOSITION COMPRISING A HOMOGENEOUS MIXTURE OF A NORMALLY SOLID SYNTHETIC ORGANIC PLOYMER AND A PLASTICIZER, SAID PLASTICIZER BEING A NON-RESINOUS ESTER OF DIELS-ALDER ADDUCT OF ANTHRACENE AND AN ALPHA, BETS ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND A MONOHYDRIC ALIPHATIC ALCOHOL CONTAINING MORE THAN ONE CARBON ATOM.
References Cited (Backward Citations)
US1415340A
Cited
US1880506A
Cited
US2360306A
Cited
US2297290A
Cited
US2301867A
Cited
US2358063A
Cited
US2311261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |