Patent US3868388A successfully refreshed from Google Patents.
US3868388A
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Flame-retardant composition
Assignee: Cities Service Co
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Filing: 1972-10-20
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Granted: 1975-02-25
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Expires: 1992-10-20
Abstract
Abstract Novel halogenated bisimides correspond to the formula: WHEREIN X is bromo or chloro; X'' is hydrogen, bromo, or chloro; R is hydrogen or an alkyl radical containing 1-5 carbon atoms; R'' is a divalent sulfur radical containing 1-2 sulfur atoms or a divalent organic radical containing 1-24 carbon atoms; and n is 0 or 1. The bisimides are useful as flame retardants for normally flammable organic polymers and, if desired, may be used in conjunction with synergists.
Inventors
- 👤 Jr Anderson Dotson
- 👤 F T Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:37
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C08K5/36; C08K5/43; C09; C09D; C09D5/00; C09D5/18; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/418
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
THE COMPOUND CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
6 words
THE COMPOUND CORRESPONDING TO THE FORMULA:
Claim 3
Dependent Claim
6 words
The compound corresponding to the formula:
Claim 4
Dependent Claim
6 words
The compound corresponding to the formula:
References Cited (Backward Citations)
US3730940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |