US3826762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-burning polyurethane foam containing a non-porous filler,a halogen source,and a phosphorus-containing compound
Assignee: Arkema Inc
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Filing: 1971-02-17
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Granted: 1974-07-30
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Expires: 1991-02-17
Abstract
Abstract A FLAME RETARDANT SYSTEM IS PROVIDED FOR POLYURETHANE FOAMS COMPRISING AN INERT FILLER, A HALOGEN SOURCE AND A PHOSPHORUS CONTAINING COMPOUND, AND, ALSO, URETHANE FOAM COMPOSITIONS CONTAINING THE FLAME RETARDANT SYSTEMS. IN ADDITION, METHODS ARE PROVIDED FOR MAKING THE SYSTEMS INCLUDING COATING THE INDIVIDUAL PARTICLES OF THE FILLER WITH A COMPOSITION CONTAINING THE HALOGEN SOURCE, AND THEREAFTER ADHERING THE PHOSPHORUS CONTAINING COMPOUND TO THE COATED PARTICLES, AND ALSO, METHODS FOR MAKING THE FLAME RETARDANT URETHANE FOAM COMPOSITIONS.
Inventors
- 👤 K Treadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:12
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/02; C08K5/04; C08K5/13; C08K5/49; C08K5/50; C08K5/51; C08K5/52; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/16; C08K7/18; C08K7/20; C08L; C08L23/00; C08L23/26; C08L23/28; C08L75/00; C08L75/04; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |