US3293767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Felt driers for paper-making machinery
Assignee: TI Gotham Inc
•
Filing: 1964-03-24
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Granted: 1966-12-27
•
Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 John A Means
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:11
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A METHOD OF EXTRACTING WATER FROM A WET WEB OF PAPER, THE STEPS COMPRISING TRANSPORTING SAID WEB, BY MEANS INCLUDING A PAPER-MAKING-MACHINE LEFT PROVIDED WITH A FINISH COMPRISING A POLYMER OF A VINYL PERFLUORO ACID ESTER AND IMPARTING TO SAID FELT OIL AND WATER REPELLENCY, INTO ASSOCIATION WITH WATER-EXTRACTION MEANS FOR EXTRACTING WATER FROM SAID WEB, AT LEAST A PART OF SAID WATER BEING TRANSFERRED THROUGH SAID FELT TO SAID WATEREXTRACTION MEANS.
Claim 2
Dependent Claim
73 words
IN A METHOD OF EXTRACTING WATER FROM A WET WEB OF PAPER, THE STEPS COMPRISING TRANSPORTING SAID WEB, BY MEANS INCLUDING A PAPER-MAKING-MACHINE LEFT PROVIDED WITH A FINISH COMPRISING A POLYMER OF A VINYL PERFLUORO ACID ESTER AND IMPARTING TO SAID FELT OIL AND WATER REPELLENCY, INTO ASSOCIATION WITH WATER-EXTRACTION MEANS FOR EXTRACTING WATER FROM SAID WEB, AT LEAST A PART OF SAID WATER BEING TRANSFERRED THROUGH SAID FELT TO SAID WATEREXTRACTION MEANS.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |