Patent US2679489A successfully refreshed from Google Patents.
US2679489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant coating composition
Assignee: Waterloo Corp
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Filing: 1953-02-03
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Granted: 1954-05-25
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Expires: 1973-02-03
Abstract
No abstract record available.
Inventors
- 👤 George L Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:14
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A PAINT-LIKE FLAME-RETARDING COATING COMPOSITION WHICH COMPRISES IN AN AQUEOUS MEDIUM FORMALDEHYDE, UREA, IN AMOUNT BY WEIGHT EQUAL TO FROM 100% TO 300% OF THE FORMALDEHYDE CONTENT OF THE COMPOSITION, A MEMBER OF A FLAMERETARDING GROUP CONSISTING OF THE AMMONIUM AND ZINC SALTS OF THE ORTHOPHOSPHATES AND BORATES IN AMOUNT BY WEIGHT EQUAL TO FROM 200% TO 400% OF THE UREA CONTENT, A THICKENING AGENT STABLE IN SALT SOLUTION IN AMOUNT BY WEIGHT EQUAL TO FROM 0.1% TO 5.0% OF THE TOTAL MIXTURE, A FINELY DIVIDED INERT, INORGANIC, SOLID IN AMOUNT BY WEIGHT EQUAL TO FROM 50% TO 150% OF THE UREA CONTENT AND HEXAMETHYLENE TETRAMINE IN AMOUNT BY WEIGHT EQUAL TO FROM 5% TO 50% OF THE FORMALDEHYDE CONTENT OF THE COMPOSITION.
Claim 2
Dependent Claim
123 words
A PAINT-LIKE FLAME-RETARDING COATING COMPOSITION WHICH COMPRISES IN AN AQUEOUS MEDIUM FORMALDEHYDE, UREA, IN AMOUNT BY WEIGHT EQUAL TO FROM 100% TO 300% OF THE FORMALDEHYDE CONTENT OF THE COMPOSITION, A MEMBER OF A FLAMERETARDING GROUP CONSISTING OF THE AMMONIUM AND ZINC SALTS OF THE ORTHOPHOSPHATES AND BORATES IN AMOUNT BY WEIGHT EQUAL TO FROM 200% TO 400% OF THE UREA CONTENT, A THICKENING AGENT STABLE IN SALT SOLUTION IN AMOUNT BY WEIGHT EQUAL TO FROM 0.1% TO 5.0% OF THE TOTAL MIXTURE, A FINELY DIVIDED INERT, INORGANIC, SOLID IN AMOUNT BY WEIGHT EQUAL TO FROM 50% TO 150% OF THE UREA CONTENT AND HEXAMETHYLENE TETRAMINE IN AMOUNT BY WEIGHT EQUAL TO FROM 5% TO 50% OF THE FORMALDEHYDE CONTENT OF THE COMPOSITION.
Claim 3
Dependent Claim
14 words
THE COMPOSITION OF CLAIM 1 IN WHICH THE TICKENING AGENT IS CARBOXY METHYL CELLULOSE.
References Cited (Backward Citations)
US2452054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |