Patent US3399098A successfully refreshed from Google Patents.
Patent US5575930A successfully refreshed from Google Patents.
US5575930A
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US
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Method of making gas permeable membranes for amperometric gas electrodes
Assignee: Ecossensors Ltd
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Filing: 1993-10-06
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Granted: 1996-11-19
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Expires: 2013-10-06
Abstract
Abstract A method of manufacturing a gas-permeable membrane for an amperometric gas electrode comprising demetallizing areas of a metallized film to obtain a regular array of gas-permeable micropores.
Inventors
- 👤 Jordis Tietje-Girault
- 👤 Brian J. Seddon
- 👤 Jerome F. McAleer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:47
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/002; G01N27/28; G01N27/30; G01N27/327; G01N27/3271
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
38 words
A method of manufacturing a gas-permeable membrane for an amperometric gas electrode from a polymer film metallized on one surface thereof which method comprises demetallizing areas of the metallized film to obtain a regular array of gas-permeable micropores.
Claim 2
Independent Claim
38 words
A method of manufacturing a gas-permeable membrane for an amperometric gas electrode from a polymer film metallized on one surface thereof which method comprises demetallizing areas of the metallized film to obtain a regular array of gas-permeable micropores.
Claim 3
Dependent Claim
14 words
A method according to claim 1, in which the polymer film is inherently gas-permeable.
Claim 4
Dependent Claim
19 words
A method according to claim 2, in which the regular array of micropores is obtained by excimer laser protoblation.
Claim 5
Dependent Claim
19 words
A method according to claim 3, in which the metallized layer on the polymer film is gold or platinum.
Claim 6
Dependent Claim
15 words
A method according to claim 4, in which the polymer film is polypropylene or polyester.
Claim 7
Dependent Claim
29 words
A method according to claim 1, in which the polymer film is of non gas-permeable material but is rendered gas-permeable over areas corresponding to said regular array of micropores.
Claim 8
Dependent Claim
19 words
A method according to claim 6, in which the regular array of micropores is obtained by excimer laser protoblation.
Claim 9
Dependent Claim
19 words
A method according to claim 7, in which the metallized layer on the polymer film is gold or platinum.
Claim 10
Dependent Claim
19 words
A method according to claim 1, in which the regular array of micropores is obtained by excimer laser photoablation.
Claim 11
Dependent Claim
18 words
A method according to claim 9, in which the photoablation involves the use of a UV excimer laser.
Claim 12
Dependent Claim
19 words
A method according to claim 10, in which the metallized layer on the polymer film is gold or platinum.
Claim 13
Dependent Claim
15 words
A method according to claim 11, in which the polymer film is polypropylene or polyester.
Claim 14
Dependent Claim
20 words
A method according to claim 1, in which the metallized layer on the polymer film is of gold or platinum.
Claim 15
Dependent Claim
15 words
A method according to claim 1, in which the polymer film is polypropylene or polyester.
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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) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |