US2652311A
Expired / Lapsed
US
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Method of after-treating viscose threads advancing in a helical path
Assignee: Industrial Rayon Corp
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Filing: 1951-04-20
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Granted: 1953-09-15
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Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Mclellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:00
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0454; D01D10/02; D01F; D01F11/00; D01F11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE CONTINUOUS AFTERTREATMENT OF VISCOSE RAYON THREAD INCLUDING THE STEP WHERE THE THREAD IS HEATED WHILE BEING ADVANCED IN THE FORM OF A HELIX BY CIRCULATING STEAM THERETHROUGH THE FURTHER TREATMENT DURING THIS PROCESSING STEP COMPRISING, CONTINUALLY HEATING THE SAID HELIX WHILE SIMULTANEOUSLY SUBSTANTIALLY CONDENSING THE CIRCULATING STEAM INSIDE THE SAID HELIX, MEANWHILE CONTINUOUSLY APPLYING A TREATING LIQUID TO A PORTION OF SAID HELIX, CONTINUOUSLY IMMEDIATELY RA-
Claim 2
Dependent Claim
68 words
IN THE CONTINUOUS AFTERTREATMENT OF VISCOSE RAYON THREAD INCLUDING THE STEP WHERE THE THREAD IS HEATED WHILE BEING ADVANCED IN THE FORM OF A HELIX BY CIRCULATING STEAM THERETHROUGH THE FURTHER TREATMENT DURING THIS PROCESSING STEP COMPRISING, CONTINUALLY HEATING THE SAID HELIX WHILE SIMULTANEOUSLY SUBSTANTIALLY CONDENSING THE CIRCULATING STEAM INSIDE THE SAID HELIX, MEANWHILE CONTINUOUSLY APPLYING A TREATING LIQUID TO A PORTION OF SAID HELIX, CONTINUOUSLY IMMEDIATELY RA-
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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |