US3935142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke-retardant polyvinylchloride compositions
Assignee: Standard Oil Co
•
Filing: 1975-02-03
•
Granted: 1976-01-27
•
Expires: 1995-02-03
Abstract
Abstract Smoke-retardant polymer compositions comprising a resinous polymer of vinyl chloride polymer and at least a sufficient amount of ferrous trimellitate to reduce smoking.
Inventors
- 👤 Alfred P. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
16 words
A composition comprising a resinous polymer of vinyl chloride and a smoke-retardant concentration of ferrous trimellitate.
Claim 2
Dependent Claim
16 words
A composition comprising a resinous polymer of vinyl chloride and a smoke-retardant concentration of ferrous trimellitate.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein said ferrous trimellitate comprises from 0.25 to 2.00 parts by weight per 100 parts by weight resinous polymer of vinyl chloride.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said composition comprises a lead stabilizer.
Claim 5
Dependent Claim
13 words
The composition of claim 2 wherein said composition comprises a compatible organotin stabilizer.
Claim 6
Dependent Claim
12 words
The composition of claim 2 wherein said composition comprises a barium-cadmium stabilizer.
Claim 7
Dependent Claim
11 words
Any composition as herein described with particular reference to the examples.
Claim 8
Dependent Claim
11 words
Any composition as herein described with particular reference to the examples.
References Cited (Backward Citations)
US2563772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |