Patent US4818618A successfully refreshed from Google Patents.
US4818618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum material coated with fluorine resin
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1987-03-19
•
Granted: 1989-04-04
•
Expires: 2007-03-19
Abstract
Abstract A fluorine resin coated aluminum material which is prepared by a process comprising the steps of coating a fluorine resin on an aluminum material having a magnesium content of from 0.01 to 10.0 wt %, and sintering the coated resin at a temperature not lower than the decomposition point of said fluorine resin.
Inventors
- 👤 Hiroshi Okazaki
- 👤 Fumio Matsuyama
- 👤 Seiji Watabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:23
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D5/00; B05D5/08; B05D5/083; B05D3/00; B32; B32B; B32B27/00; B32B27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A fluorine resin coated aluminum material which is prepared by a process consisting essentially of the steps of coating a fluorine resin on an aluminum material having a magnesium content of from 0.01 to 10.0 wt %, and sintering the coated resin at a temperature not lower than the decomposition point of said fluorine resin.
Claim 2
Dependent Claim
55 words
A fluorine resin coated aluminum material which is prepared by a process consisting essentially of the steps of coating a fluorine resin on an aluminum material having a magnesium content of from 0.01 to 10.0 wt %, and sintering the coated resin at a temperature not lower than the decomposition point of said fluorine resin.
Claim 3
Dependent Claim
25 words
A fluorine resin coated aluminum material as in claim 1, wherein said aluminum material has a magnesium content of from 0.1 to 10.0 wt %.
Claim 4
Dependent Claim
18 words
A fluorine resin coated aluminum material as in claim 1, wherein said fluorine resin is a tetrafluoroethylene/perfluoroalkylvinylether copolymer.
Claim 5
Dependent Claim
18 words
A fluorine resin coated aluminum material as in claim 1, wherein said fluorine resin is a tetrafluoroethylene/hexafluoropropylene copolymer.
Claim 6
Dependent Claim
29 words
A fluorine resin coated aluminum material as in claim 1, wherein said aluminum material is in the form of a foil having a thickness of 200 micrometers or less.
Claim 7
Dependent Claim
24 words
A fluorine resin coated aluminum material as in claim 1, wherein said aluminum material has a surface roughness Rz of 5 micrometers or less.
Claim 8
Dependent Claim
36 words
A fluorine resin coated aluminum material as in claim 1, wherein said fluorine resin has a thickness of 20 micrometers or less and the surface roughness Rz of said fluorine resin is 3 micrometers or less.
Claim 9
Dependent Claim
16 words
A fluorine resin coated aluminum material as in claim 1, wherein said fluorine resin is polytetrafluoroethylene.
Claim 10
Dependent Claim
32 words
A fluorine resin coated aluminum material as in claim 8, wherein said polytetrafluoroethylene is sintered at a temperature of 400° C. or higher for a period of from 10 to 200 seconds.
Claim 11
Dependent Claim
33 words
A fluorine resin coated aluminum material as in claim 9, wherein said polytetrafluoroethylene is sintered at a temperature of from 400° to 600° C. for a period of from 10 to 200 seconds.
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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |