US3882667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a composite yarn
Assignee: Pall Filtration and Separations Group Inc
•
Filing: 1973-03-05
•
Granted: 1975-05-13
•
Expires: 1993-03-05
Abstract
Abstract A composite textile yarn having anti-static characteristics formed of non-metallic yarn and a blended yarn plied with the non-metallic yarn, the blended yarn being formed of metallic and non-metallic staple fibers with the metallic fibers being distributed in the blended yarn so as to be capable of dissipating static electricity while being incapable of maintaining an electric current flow continuously therethrough.
Inventors
- 👤 Gerald F Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/404; D02G3/406; D02G3/02; D02G3/12; D02G3/44; D02G3/441; Y; Y10; Y10S; Y10S57/00; Y10S57/901
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
56 words
A method of making a composite textile yarn comprising the steps of: a. spinning a blended yarn of metallic and non-metallic staple fibers b. combining a non-metallic continuous filament yarn with the blended yarn; to form a composite yarn; and c. removing said non-metallic staple fibers while leaving said metallic staple fibers trapped in said composite.
Claim 2
Independent Claim
56 words
A method of making a composite textile yarn comprising the steps of: a. spinning a blended yarn of metallic and non-metallic staple fibers b. combining a non-metallic continuous filament yarn with the blended yarn; to form a composite yarn; and c. removing said non-metallic staple fibers while leaving said metallic staple fibers trapped in said composite.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said non-metallic staple fibers are removed by dissolving.
References Cited (Backward Citations)
US2890567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |