Patent US4959261A successfully refreshed from Google Patents.
US4959261A
Expired / Lapsed
US
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Fluorinated non-graphitic carbonaceous films and foams
Assignee: Dow Chemical Co
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Filing: 1989-07-21
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Granted: 1990-09-25
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Expires: 2009-07-21
Abstract
Abstract A film or foam structure comprising a non-flammable non-graphitic carbonaceous film or foam having an LOI greater than 40 and at least a partially fluorinated surface.
Inventors
- 👤 Francis P. McCullough, Jr.
- 👤 Leo R. Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:28
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249987; Y10T428/30; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
26 words
A film or foam structure comprising a non-flammable nongraphitic carbonaceous film or foam having an LOI greater than 40 and at least a partially fluorinated surface.
Claim 2
Dependent Claim
26 words
A film or foam structure comprising a non-flammable nongraphitic carbonaceous film or foam having an LOI greater than 40 and at least a partially fluorinated surface.
Claim 3
Dependent Claim
9 words
The structure of claim 1 which is a film.
Claim 4
Dependent Claim
9 words
The structure of claim 1 which is a foam.
Claim 5
Dependent Claim
11 words
The structure of claim 1 wherein the entire surface is fluorinated.
Claim 6
Dependent Claim
14 words
The structure of claim 1 wherein said carbonaceous film or foam is electrically non-conductive.
Claim 7
Dependent Claim
15 words
The structure of claim 1 wherein said carbonaceous film or foam has static dissipating characteristics.
Claim 8
Dependent Claim
14 words
The structure of claim 1 wherein said carbonaceous film or foam is electrically conductive.
Claim 9
Dependent Claim
16 words
The structure of claim 1 wherein said carbonaceous film or foam is derived from stabilized polyacrylonitrile.
Claim 10
Dependent Claim
17 words
The structure of claim 1 wherein said carbonaceous film or foam is derived from a stabilized polyamide.
Claim 11
Dependent Claim
22 words
The structure of claim 1 wherein said carbonaceous film or foam has a nitrogen content of from about 10 to 20 percent.
Claim 12
Dependent Claim
21 words
The structure of claim 10 wherein said carbonaceous film or foam has a nitrogen content of about 18 to 20 percent.
Claim 13
Dependent Claim
21 words
The structure of claim 1 wherein said carbonaceous film or foam has a nitrogen content of at least about 5 percent.
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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |