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US3457235A
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Polyester compositions prepared from new 9,10-bridged anthracene compounds
Assignee: Eastman Kodak Co
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Filing: 1967-02-17
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Granted: 1969-07-22
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Expires: 1987-02-17
Abstract
No abstract record available.
Inventors
- 👤 Bruce H Klanderman
- 👤 Jan W H Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07C; C07C61/00; C07C61/16; C07C61/39; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/185; C08G63/187; C08G63/19; C08G63/193; C08G63/197; C08G63/52; C08G63/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3301827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |