US3305378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color stabilized cellulose esters and compositions containing neopentyl phosphite
Assignee: Eastman Kodak Co
•
Filing: 1963-02-25
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Granted: 1967-02-21
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ritchie Kim
- 👤 John W Addleburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:09
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A LOWER FATTY ACID ESTER OF CELLULOSE CONTAINING THEREIN A COLOR STABILIZING AMOUNT OF A NEOPENTYL PHOSPHITE HAVING THE FORMULA
Claim 2
Dependent Claim
20 words
A LOWER FATTY ACID ESTER OF CELLULOSE CONTAINING THEREIN A COLOR STABILIZING AMOUNT OF A NEOPENTYL PHOSPHITE HAVING THE FORMULA
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US2834798A
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US2999398A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |