US3341625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphine oxides as flame-retardant agents for thermoplastic products
Assignee: Wyeth Holdings LLC
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Filing: 1966-09-15
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Granted: 1967-09-12
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Gillham Helen Currier
- 👤 Sherr Allan Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
FLAME-RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF A THERMOPLASTIC POLYMER PRODUCED SOLELY FROM ETHYLENICALLY UNSATURATED MONOMERS AND A FLAME-RETARDING AMOUNT OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
24 words
FLAME-RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF A THERMOPLASTIC POLYMER PRODUCED SOLELY FROM ETHYLENICALLY UNSATURATED MONOMERS AND A FLAME-RETARDING AMOUNT OF A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
37 words
A FLAME-RETARDANT COMPROSITION ACCORDING TO CLAIM 1 WHEREIN THE THEROPLASTIC POLYMER IS A MIXTURE OF (A) A BUTADIENE-ACRYLONITRILE COPOLYMER AND (B) AN ACRYLONITRILE-STYRENE COPOLYMER, THE AMOUNT OF A AND B RANGING FROM ABOUT 10-75% TO 90-25%, RESPECTIVELY.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |