US6037062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered molding
Assignee: Toyoda Gosei Co Ltd
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Filing: 1997-02-28
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Granted: 2000-03-14
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Expires: 2017-02-28
Abstract
Abstract A layered molding and method for making the same which has excellent anti-permeability to gasoline. The layered molding is defined by a fluoroplastic or polyamide plastic and an epichlorohydrin rubber. The fluoroplastic is a copolymer formed from at least two precursors selected from the group consisting of hexafluoropropylene, tetrafluoroethylene, and vinylidene fluoride, which are selected within a plotted range to preferably form a binary or tertiary composition. The epiclorohydrin rubber contains organic phosphonium. The resulting molding layer does not require an adhesive agent.
Inventors
- 👤 Daisuke Tsutsumi
- 👤 Atsushi Suzuki
- 👤 Katsumasa Takeuchi
- 👤 Masayoshi Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; B; B32; B32B; B32B25/00; B32B25/04; B32B25/08; C08J2371/00; C08J2371/02; C08J2371/03; C08J2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/3175; Y10T428/31855; Y10T428/31859
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
16 words
A layered molding comprising: a rubber layer containing an organic phosphonium; and a polyamide plastic layer.
Claim 2
Dependent Claim
16 words
A layered molding comprising: a rubber layer containing an organic phosphonium; and a polyamide plastic layer.
Claim 3
Dependent Claim
17 words
A layered molding according to claim 1, wherein the rubber layer is formed from an epichlorohydrin rubber.
Claim 4
Dependent Claim
19 words
A layered molding according to claim 1, wherein said rubber layer is directly contacted with said polyamide plastic layer.
Claim 5
Dependent Claim
19 words
A layered molding according to claim 1, wherein the organic phosphonium is phosphonium benzo triazolete or phosphonium tolyl triazolete.
Claim 6
Dependent Claim
25 words
A layered molding according to claim 3, further comprising a threaded layer on said rubber layer and a second rubber layer on said threaded layer.
Claim 7
Dependent Claim
25 words
A layered molding comprising: a rubber layer; a polyamide plastic layer; and an organic phosphonium layer between said rubber layer and said polyamide plastic layer.
Claim 8
Dependent Claim
25 words
A layered molding comprising: a rubber layer; a polyamide plastic layer; and an organic phosphonium layer between said rubber layer and said polyamide plastic layer.
Claim 9
Dependent Claim
17 words
A layered molding according to claim 6, wherein the rubber layer is formed from an epichlorohydrin rubber.
Claim 10
Dependent Claim
24 words
A layered molding according to claim 6, wherein said organic phosphonium layer is directly contacted with said polyamide plastic layer and said rubber layer.
Claim 11
Dependent Claim
19 words
A layered molding according to claim 6, wherein the organic phosphonium is phosphonium benzo triazolete or phosphonium tolyl triazolete.
Claim 12
Dependent Claim
25 words
A layered molding according to claim 6, further comprising a threaded layer on said rubber layer and a second rubber layer on said threaded layer.
References Cited (Backward Citations)
JPS59140577A
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JPS60125756A
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US4828923A
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US4830920A
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JPH0235290A
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US5356681A
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US5855976A
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US5798158A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |