US3793280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable solutions of melamine-urea-formaldehyde condensates containing a stabilizing aldehyde and processes for their preparation
Assignee: Individual
•
Filing: 1970-06-25
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Granted: 1974-02-19
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Expires: 1990-06-25
Abstract
Abstract STABLE AQUEOUS ALKALINE SOLUTIONS OF CURABLE MELAMINEUREA-FORMALDEHYDE CONDENSATES SUITABLE FOR ADHESIVES AND FOR TREATMENT OF PAPER AND TEXTILES ARE PREPARED BY INCORPORATING 0.1 TO 5 MOLES, PER MOLE OF MELAMINE, OF A STABILIZING ALDEHYDE SELECTED FROM THE GROUP OF ACETALDEHYDE, GLYOXAL, PROPIONALDEHYDE AND GLUTARALDEHYDE.
Inventors
- 👤 S Sandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:26
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/36; C08G12/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |