US3817701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona treatment of textiles
Assignee: SECRETARY
•
Filing: 1970-07-30
•
Granted: 1974-06-18
•
Expires: 1990-07-30
Abstract
Abstract A PROCESS FOR ENCHANCING THE SPINNABLITY OF FIBERS, PARTICULARLY WOOL AND COTTON, WHICH COMPRISES EXPOSING SAID FIBERS TO A CORONA DISCHARGE ZONE FOR THE PURPOSE OF IMPARTING BOTH A TRANSITORY AND A PERMANENT INCREASE IN COHESIVENESS TO SAID FIBERS.
Inventors
- 👤 W Thorsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:52
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/34; D06M10/00; D06M10/02; D06M10/025; H; H01; H01J; H01J37/00; H01J37/32; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/08; D06M2101/10; D06M2101/12; D06M2101/16; D06M2101/30; D06M2101/34; D06M2200/00; D06M2200/35; D06M2200/45; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |