Patent US3283493A successfully refreshed from Google Patents.
US3283493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a spun yarn
Assignee: Celanese Corp
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Filing: 1964-05-11
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Granted: 1966-11-08
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 James B Arthur
- 👤 Malcolm R Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:40
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE PROCESS OF PRODUCING A DRAFTABLE CONTINUOUS FILAMENT STRUCTURE, COMPRISING BULKING CONTINUOUS FILAMENT YARN INITIALLY HAVING A TENACITY IN EXCESS OF ABOUT 1 GRAM PER DENIOR UNTIL THE TENACITY IS LESS THAN ABOUT 0.5 GRAM PER DENIER.
Claim 2
Dependent Claim
37 words
THE PROCESS OF PRODUCING A DRAFTABLE CONTINUOUS FILAMENT STRUCTURE, COMPRISING BULKING CONTINUOUS FILAMENT YARN INITIALLY HAVING A TENACITY IN EXCESS OF ABOUT 1 GRAM PER DENIOR UNTIL THE TENACITY IS LESS THAN ABOUT 0.5 GRAM PER DENIER.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |