US2895842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 4-(4'-tolylsulfonyl)-benzoic acid and resinous compositions plasticized therewith
Assignee: Eastman Kodak Co
•
Filing: 1956-02-13
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Granted: 1959-07-21
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Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 James C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C07; C07C; C07C317/00; C07C317/44; C08K5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PLASTICIZED PLASTIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKANOIC ACID ESTER OF CELLULOSE AND A POLYMERIZARION PRODUCT OF A RESIN FORMING MONO-ETHYLENICALLY UNSATURATED COMPOUND, WHICH PLASTICIZED PLASTIC COMPOSITION CONTAINS AS A PLASTICIZER A SUBSTANTIAL PROPORTION OF A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
47 words
A PLASTICIZED PLASTIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKANOIC ACID ESTER OF CELLULOSE AND A POLYMERIZARION PRODUCT OF A RESIN FORMING MONO-ETHYLENICALLY UNSATURATED COMPOUND, WHICH PLASTICIZED PLASTIC COMPOSITION CONTAINS AS A PLASTICIZER A SUBSTANTIAL PROPORTION OF A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
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US2728738A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |