Patent US4120053A successfully refreshed from Google Patents.
US3385801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant polyurethanes
Assignee: Monsanto Co
•
Filing: 1964-05-05
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Granted: 1968-05-28
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Expires: 1984-05-05
Abstract
No abstract record available.
Inventors
- 👤 Gail H Birum
- 👤 Richard M Anderson
- 👤 Rodney B Clampitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/288; C08G18/30; C08G18/38; C08G18/3878; C08G18/388
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A FIRE RESISTANT POLYURETHANE PREPARED BY INCORPORATING INTO THE REACTANT MIXTURE USED TO PREPARE THE POLYURETHANE A SMALL BUT FIRE RESISTANCE IMPARTING AMOUNT OF A DIALKYL A-HYDROXYALKYLPHOSPHONATE OF THE FORMULA
Claim 2
Dependent Claim
30 words
A FIRE RESISTANT POLYURETHANE PREPARED BY INCORPORATING INTO THE REACTANT MIXTURE USED TO PREPARE THE POLYURETHANE A SMALL BUT FIRE RESISTANCE IMPARTING AMOUNT OF A DIALKYL A-HYDROXYALKYLPHOSPHONATE OF THE FORMULA
References Cited (Backward Citations)
US2254124A
Cited
US2593213A
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US2579810A
Cited
US3134742A
Cited
GB919067A
Cited
US3142651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |