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US3424708A
Expired / Lapsed
US
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Mass-coloration of synthetic linear polyesters
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-11-29
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Granted: 1969-01-28
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Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Francis Bowman
- 👤 Albert Charles Cooper
- 👤 Francis Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:25
CPC Classifications
C; C09; C09B; C09B69/00; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/688; C08G63/6884; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/36; C08K5/37; C08K5/375; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/56; C09B1/58; C09B1/585; C09B5/00; C09B5/24; C09B5/34; C09B5/36
Claims Analysis
Total Claims: 0
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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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |