US2608546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified melamine-formaldehyde resins
Assignee: Monsanto Chemicals Ltd
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Filing: 1949-01-26
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Granted: 1952-08-26
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Expires: 1969-01-26
Abstract
No abstract record available.
Inventors
- 👤 Elwood F Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:43
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/51; C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A RESINOUS PRODUCT COMPRISING A CONDENSATION PRODUCT OF 1 MOL OF MELAMINE WITH FROM 1 TO 6 MOLS OF FORMALDEHYDE AND FROM 0.5 TO 2 MOLS OF SALICYLIC ACID, SAID CONDENSING PRODUCT HAVING BEEN PREPARED BY HEATING A MIXTURE OF THE REACTIVE INGREDIENTS AT FROM 40* C. TO 80* C. UNTIL A CLEAR SOLUTION IS FORMED AND THEN HEATING THE SOLUTION AT FROM 60* C. TO REFLUX TEMPERATURE ATOMSPHERIC PRESSURE AT A PH OF FROM 7 TO 8.
Claim 2
Dependent Claim
78 words
A RESINOUS PRODUCT COMPRISING A CONDENSATION PRODUCT OF 1 MOL OF MELAMINE WITH FROM 1 TO 6 MOLS OF FORMALDEHYDE AND FROM 0.5 TO 2 MOLS OF SALICYLIC ACID, SAID CONDENSING PRODUCT HAVING BEEN PREPARED BY HEATING A MIXTURE OF THE REACTIVE INGREDIENTS AT FROM 40* C. TO 80* C. UNTIL A CLEAR SOLUTION IS FORMED AND THEN HEATING THE SOLUTION AT FROM 60* C. TO REFLUX TEMPERATURE ATOMSPHERIC PRESSURE AT A PH OF FROM 7 TO 8.
References Cited (Backward Citations)
CH137743A
Cited
GB502720A
Cited
GB527414A
Cited
US2368451A
Cited
US2413697A
Cited
US2463032A
Cited
US2524112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |