US2773793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified melamine resins
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-03-19
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Granted: 1956-12-11
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Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 George L Fraser
- 👤 Elmer Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29; C08K5/31; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
IN THE METHOD FOR PREPARING A LAMINATE IN WHICH A PLURALITY OF RESIN-IMPREGNATED LAYERS OF FIBROUS MATERIAL ARE ASSEMBLED IN SUPERIMPOSED RELATIONSHIP, PLACED UNDER PRESSURE AND HEATED UNTIL THE RESIN HAS CURED, THE IMPROVEMENT WHICH COMPRISES IMPREGNATING SAID FIBROUS MATERIAL WITH A MIXTURE OF 95.0-99.9% BY WEIGHT OF A LOW MOLECULAR WEIGHT MELAMINE-FORMALDEHYDE CONDENSATE AND, CORRESPONDINGLY, 5.0-0.1% BY WEIGHT OF AN AROMATIC BIGUANIDE WHICH DISSOCIATES IN WATER TO YIELD A PH OF FROM 10 TO 12, SAID AROMATIC BIGUANIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
82 words
IN THE METHOD FOR PREPARING A LAMINATE IN WHICH A PLURALITY OF RESIN-IMPREGNATED LAYERS OF FIBROUS MATERIAL ARE ASSEMBLED IN SUPERIMPOSED RELATIONSHIP, PLACED UNDER PRESSURE AND HEATED UNTIL THE RESIN HAS CURED, THE IMPROVEMENT WHICH COMPRISES IMPREGNATING SAID FIBROUS MATERIAL WITH A MIXTURE OF 95.0-99.9% BY WEIGHT OF A LOW MOLECULAR WEIGHT MELAMINE-FORMALDEHYDE CONDENSATE AND, CORRESPONDINGLY, 5.0-0.1% BY WEIGHT OF AN AROMATIC BIGUANIDE WHICH DISSOCIATES IN WATER TO YIELD A PH OF FROM 10 TO 12, SAID AROMATIC BIGUANIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
12 words
THE METHOD OF CLAIM 1 IN WHICH FIBROUS MATERIAL EMPLOYED IS GLASS.
References Cited (Backward Citations)
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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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |