US2694630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sized waterlaid glass fiber products and process of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1952-05-31
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Granted: 1954-11-16
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Expires: 1972-05-31
Abstract
No abstract record available.
Inventors
- 👤 Chester G Landes
- 👤 Jr Walter F Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:06
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/20; D21H17/21; D21H17/24; D21H17/28; D21H17/31; D21H17/33; D21H17/46; D21H17/54; D21H17/60; D21H13/00; D21H13/36; D21H13/38; D21H13/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
PAPE COMPOSED PREDOMINANTLY OF GLASS FIBERS SIZED BY AN ADSORBED CONTENT OF ABOUT 0.1% TO 5% OF THEIR DRY WEIGHT OF TE CONDENSATION PRODUCT OF FROM 1 TO 2 MOLS OF EPICHLORHYDRIN WITH 1 MOL OF AN ALIPHATIC AMING OF ABOUT 8 TO 22 CARBON ATOMS, SAID CONDENSATION PRODUCT IN HAVING BEEN APPLIED TO SAID FIBERS IN AQUEOUS SUSPENSION FROM A WATER SOLUTION OF SAID CONDENSATION PRODUCT IN WATERDISPERSIBLE FORM FOLLOWED BY MAKING THE FURNISH ALKALINE AND FORMING THE TREATED FIBERS INTO PAPER AND HEATING THE PAPER UNDER ALKALINE CONDITIONS, THE PAPER BEING HEATED TO A TEMPERATURE AND EXTEND SUFFICIENT TO DRY THE SAME AND DEVELOP THE SIZING PROPERTIES OF THE CONDENSATION PRODUCT THEREON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |