US3547882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-stable polyesters
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1967-06-09
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Granted: 1970-12-15
•
Expires: 1987-06-09
Abstract
No abstract record available.
Inventors
- 👤 William Michael Corbett
- 👤 John Francis Lloyd Roberts
- 👤 John Michael Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:15
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/826; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB579462A
Cited
GB610137A
Cited
US2641592A
Cited
US2984647A
Cited
US3161710A
Cited
US3297650A
Cited
US3398124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |