US3413797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of oriented crystalline polyester filaments
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-08-18
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Granted: 1968-12-03
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Chapman Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/006; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D02G; D02G3/00; D02G3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB838785A
Cited
US2931068A
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US3016577A
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US3061941A
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US3052989A
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US3069836A
Cited
US3051212A
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US3030173A
Cited
US3216187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |