US3156752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heat treating filaments
Assignee: EIDP Inc
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Filing: 1961-09-11
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Granted: 1964-11-10
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Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Cope Andrew Passmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:57
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; D01; D01D; D01D10/00; D01D10/02; D01D10/04; D01D10/0436; D01D10/0481; D02; D02J; D02J1/00; D02J1/22; D02J1/229; Y; Y10; Y10S; Y10S264/00; Y10S264/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN IMPROVED PROCESS FOR HEAT-TREATING CONTINUOUSLY FORWARDED FLUID-BORNE PLURALITY OF UNTWISTED UNENTANGLED CONTINUOUS FILAMENTS COMPRISING CONTACTING THE MOVING FILAMENTS WITH A CO-CURRENT STREAM OF HEATED FLUID ELEVATED ABOVE THE STICKING TEMPERATURE OF THE FILAMENTS WHILE MAINTAINING A BOUNDARY SURROUNDING THE CONTACTING FILAMENTS AND CO-CURRENT STREAMS AT A TEMPERATURE BELOW THE STICKING TEMPERATURES OF THE FILAMENTS TO AVOID INTERFERENCE WITH FILAMENT MOVEMENT BY ADHERENCE OF THE FILAMENTS TO THE BOUNDARY.
Claim 2
Dependent Claim
69 words
AN IMPROVED PROCESS FOR HEAT-TREATING CONTINUOUSLY FORWARDED FLUID-BORNE PLURALITY OF UNTWISTED UNENTANGLED CONTINUOUS FILAMENTS COMPRISING CONTACTING THE MOVING FILAMENTS WITH A CO-CURRENT STREAM OF HEATED FLUID ELEVATED ABOVE THE STICKING TEMPERATURE OF THE FILAMENTS WHILE MAINTAINING A BOUNDARY SURROUNDING THE CONTACTING FILAMENTS AND CO-CURRENT STREAMS AT A TEMPERATURE BELOW THE STICKING TEMPERATURES OF THE FILAMENTS TO AVOID INTERFERENCE WITH FILAMENT MOVEMENT BY ADHERENCE OF THE FILAMENTS TO THE BOUNDARY.
References Cited (Backward Citations)
CA531732A
Cited
US2425037A
Cited
US2468081A
Cited
US2509279A
Cited
US2584043A
Cited
US2952879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |