US2634255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Craze-resistant adhesive having improved storage stability
Assignee: Wyeth Holdings LLC
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Filing: 1949-09-23
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Granted: 1953-04-07
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Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Donald G Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:13
CPC Classifications
C; C08; C08J; C08J9/00; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262; C08J2361/00; C08J2361/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR STABILIZING AN ADHESIVE COMPOSITION COMPRISING HEATING A MIXTURE OF A UREAFORMALDEHYDE RESIN HAVING A MOL RATIO OF 1:1 TO 1:2, RESPECTIVELY, A COMPOUND CONTAINING A FURANE RING STURCTURE SELECTED FROM THE GROUP CONSISTING OF FURFURYL ALCOHOL AND FURFURAL, WHEREIN THE FURANE RING COMPOUND AND UREA-FORMALDEHYDE RESING ARE PRESENT IN A WEIGHT RATIO OF 0.05:1 TO 0.5:1, RESPECTIVELY, AND 5 TO 15% BY WEIGHT OF AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL AND ETHANOL WHEREIN SAID PERCENTAGES BY WEIGHT ARE BASED ON THE TOTAL WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
92 words
A PROCESS FOR STABILIZING AN ADHESIVE COMPOSITION COMPRISING HEATING A MIXTURE OF A UREAFORMALDEHYDE RESIN HAVING A MOL RATIO OF 1:1 TO 1:2, RESPECTIVELY, A COMPOUND CONTAINING A FURANE RING STURCTURE SELECTED FROM THE GROUP CONSISTING OF FURFURYL ALCOHOL AND FURFURAL, WHEREIN THE FURANE RING COMPOUND AND UREA-FORMALDEHYDE RESING ARE PRESENT IN A WEIGHT RATIO OF 0.05:1 TO 0.5:1, RESPECTIVELY, AND 5 TO 15% BY WEIGHT OF AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL AND ETHANOL WHEREIN SAID PERCENTAGES BY WEIGHT ARE BASED ON THE TOTAL WEIGHT OF THE COMPOSITION.
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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |