US2899315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized cellulose ester compositions
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A HIGH RESITANT LOWER FATTY ACID ESTER OF CELLULOSE OF NOT MORE THAN .05% ACTIVE ASH CONTENT AND NOT MORE THAN 0.01% OF TOTALCOMBINED SULFUR TO WHICH HAS BEEN ADDED .01-.05% OF AN ALKALI METAL ACID OXATLATE, A STABLIZING QUANTITY IN AN AMOUNT WITHIN THE RANGE OF, 0.01-0.5% OF THE CELLULOSE ESTER OF A SALT STABLILIZER SELECTED FROM THE SALTS OF CATIONS HAVING A "K" VALUE OF LESS THAN 40 IN THE RELATION
Claim 2
Dependent Claim
73 words
A HIGH RESITANT LOWER FATTY ACID ESTER OF CELLULOSE OF NOT MORE THAN .05% ACTIVE ASH CONTENT AND NOT MORE THAN 0.01% OF TOTALCOMBINED SULFUR TO WHICH HAS BEEN ADDED .01-.05% OF AN ALKALI METAL ACID OXATLATE, A STABLIZING QUANTITY IN AN AMOUNT WITHIN THE RANGE OF, 0.01-0.5% OF THE CELLULOSE ESTER OF A SALT STABLILIZER SELECTED FROM THE SALTS OF CATIONS HAVING A "K" VALUE OF LESS THAN 40 IN THE RELATION
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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |