US2983627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making webs of fibrous material
Assignee: Portals Ltd
•
Filing: 1957-08-22
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Granted: 1961-05-09
•
Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Williams Harold Malcolm Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; D; D21; D21H; D21H13/00; D21H13/10; D21H13/20; D21H13/26; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/55; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T442/00; Y10T442/20; Y10T442/2762; Y10T442/277; Y10T442/2811; Y10T442/2861; Y10T442/2893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF MAKING A WEB OF FIBROUS MATERIAL HAVING A HIGH FLEXIBILITY AND TEAR STRENGTH AND CONTAINING SYNTHETIC FIBRES, WHICH METHOD COMPRISES IMPREGNATING THE FIBRES AFTER THE FORMATION OF THE WEB WITH A SOLUTION OF A METHYL METHOXY DERIVATIVE OF NYLON, REMOVING ANY EXCESS OF THE SOLUTION AND SUBSEQUENTLY DRYING THE WEB.
Claim 2
Independent Claim
53 words
A METHOD OF MAKING A WEB OF FIBROUS MATERIAL HAVING A HIGH FLEXIBILITY AND TEAR STRENGTH AND CONTAINING SYNTHETIC FIBRES, WHICH METHOD COMPRISES IMPREGNATING THE FIBRES AFTER THE FORMATION OF THE WEB WITH A SOLUTION OF A METHYL METHOXY DERIVATIVE OF NYLON, REMOVING ANY EXCESS OF THE SOLUTION AND SUBSEQUENTLY DRYING THE WEB.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |