US3385831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile fibers of polyethylene terephthalate/hexahydroterephthalate copolyester
Assignee: EIDP Inc
•
Filing: 1967-02-06
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Granted: 1968-05-28
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Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 William H Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:19
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; D; D01; D01F; D01F6/00; D01F6/78; D01F6/84; Y; Y10; Y10S; Y10S260/00; Y10S260/23
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |