US2831777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose organic acid ester plastics containing n-benzoyl p-hydroxy anilide
Assignee: Eastman Kodak Co
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Filing: 1955-03-09
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Granted: 1958-04-22
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Lester W A Meyer
- 👤 Margaret H Broyles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CELLULOSE ORGANIC ACID ESTER PLASTIC COMPRISING A CELLULOSE ORGANIC ACID ESTER SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ACETATE, CELLULOSE PROPIONATE, CELLULOSE BUTYRATE, CELLULOSE ACETATE-PROPIONATE AND CELLULOSE ACETATE-BUTYRATE, A PLASTICIZER THEEFOR, AND, AS AN AGENT FOR INHIBITING DETERIORATION OF THE PLASTIC BY ULTRAVIOLET LIGHT, APPROXIMATELY 0.5% TO 2.0%, BASED ON THE WEIGHT OF THE CELLULOSE ESTER, OF N-BENZOYL P-HYDROXY ANILIDE.
Claim 2
Dependent Claim
61 words
A CELLULOSE ORGANIC ACID ESTER PLASTIC COMPRISING A CELLULOSE ORGANIC ACID ESTER SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ACETATE, CELLULOSE PROPIONATE, CELLULOSE BUTYRATE, CELLULOSE ACETATE-PROPIONATE AND CELLULOSE ACETATE-BUTYRATE, A PLASTICIZER THEEFOR, AND, AS AN AGENT FOR INHIBITING DETERIORATION OF THE PLASTIC BY ULTRAVIOLET LIGHT, APPROXIMATELY 0.5% TO 2.0%, BASED ON THE WEIGHT OF THE CELLULOSE ESTER, OF N-BENZOYL P-HYDROXY ANILIDE.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |