Patent US3294710A successfully refreshed from Google Patents.
US3294710A
Expired / Lapsed
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Flameproof polyurethane resins
Assignee: Stauffer Chemical Co
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Filing: 1962-07-30
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Granted: 1966-12-27
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Richard H Rosenberg
- 👤 Robert S Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3889; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08L; C08L75/00; C08L75/04; C08G2110/00; C08G2110/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A FLAME RESISTANT URETHANE COMPOSITION COMPRISING: (A) A PHOSPHORUS COMPOUND SELECTED FROM THE CLASS CONSISTING OF (1) A DIALKANOLAMINOALKYLPHOSPHONATE HAVING THE FORMULA:
Claim 2
Dependent Claim
22 words
A FLAME RESISTANT URETHANE COMPOSITION COMPRISING: (A) A PHOSPHORUS COMPOUND SELECTED FROM THE CLASS CONSISTING OF (1) A DIALKANOLAMINOALKYLPHOSPHONATE HAVING THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |