US3068220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water insoluble cyanoethyl sucrose ethers
Assignee: Eastman Kodak Co
•
Filing: 1959-04-13
•
Granted: 1962-12-11
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
- 👤 Herman E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A WATER INSOLUBLE CYANOETHYL ETHER OF SUCROSE HAVING 5-7,8 CYANOETHYL GROUPS PER SUCROSE MOLECULE.
Claim 2
Dependent Claim
14 words
A WATER INSOLUBLE CYANOETHYL ETHER OF SUCROSE HAVING 5-7,8 CYANOETHYL GROUPS PER SUCROSE MOLECULE.
References Cited (Backward Citations)
US2563526A
Cited
US2037740A
Cited
US2189338A
Cited
US2331090A
Cited
US2383443A
Cited
US2375847A
Cited
US2461502A
Cited
US2671779A
Cited
US2562884A
Cited
US2842541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |