Patent US2825958A successfully refreshed from Google Patents.
US2825958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making woven felts
Assignee: EIDP Inc
•
Filing: 1953-05-28
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Granted: 1958-03-11
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Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert M Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:22
CPC Classifications
D; D06; D06C; D06C11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS FOR PREPARING A NON-WOVEN FELT-LIKE COVER ON A STAND CONTRUCTED FABRIC WHICH COMPRISES RAISING A THICK NAP ON A STRAND CONSTRUCTED FABRIC COMPOSED OF A MAJOR PROPORTION OF SYNTHETIC FIBERS CAPABLE OF RETRACTING AT LEAST 12% IN LENGTH AND THEN TREATING THE FABRIC TO AT LEAST THE POINT OF RETRACTION OF THE RETRACTABLE FIBERS BUT LESS THAN THE BONDING POINT OF ANY FIBER IN SAID FABRIC TO RETRACT THE RETRACTABLE FIBERS AND COMPACT THE
Claim 2
Dependent Claim
76 words
THE PROCESS FOR PREPARING A NON-WOVEN FELT-LIKE COVER ON A STAND CONTRUCTED FABRIC WHICH COMPRISES RAISING A THICK NAP ON A STRAND CONSTRUCTED FABRIC COMPOSED OF A MAJOR PROPORTION OF SYNTHETIC FIBERS CAPABLE OF RETRACTING AT LEAST 12% IN LENGTH AND THEN TREATING THE FABRIC TO AT LEAST THE POINT OF RETRACTION OF THE RETRACTABLE FIBERS BUT LESS THAN THE BONDING POINT OF ANY FIBER IN SAID FABRIC TO RETRACT THE RETRACTABLE FIBERS AND COMPACT THE
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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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |