Patent US3041639A successfully refreshed from Google Patents.
Patent US3345289A successfully refreshed from Google Patents.
US3345289A
Expired / Lapsed
US
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Fire retardant composition of diammonium phosphate containing methylvinyl ether-maleic anhydride copolymer as thickener
Assignee: GAF Chemicals Corp
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Filing: 1965-11-01
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Granted: 1967-10-03
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Expires: 1985-11-01
Abstract
No abstract record available.
Inventors
- 👤 Freifeld Milton
- 👤 Churchill Bradford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:50
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A FIRE RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF DIAMMONIUM PHOSPHATE CONTAINING A THICKENING AGENT SELECTED FROM THE CLASS CONSISTING OF COPOLYMERS OF METHYLVINYL ETHER AND MALEIC ANHYDRIDE AND PARTIAL AMIDES AND PARTIAL ESTERS THEREOF.
Claim 2
Dependent Claim
37 words
A FIRE RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF DIAMMONIUM PHOSPHATE CONTAINING A THICKENING AGENT SELECTED FROM THE CLASS CONSISTING OF COPOLYMERS OF METHYLVINYL ETHER AND MALEIC ANHYDRIDE AND PARTIAL AMIDES AND PARTIAL ESTERS THEREOF.
References Cited (Backward Citations)
US2523626A
Cited
US2921930A
Cited
US2998400A
Cited
US3080316A
Cited
US2912394A
Cited
US3196108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |