| (19) |
 |
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(11) |
EP 0 488 995 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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01.07.1992 Bulletin 1992/27 |
| (43) |
Date of publication A2: |
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03.06.1992 Bulletin 1992/23 |
| (22) |
Date of filing: 17.07.1987 |
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| (51) |
International Patent Classification (IPC)5: C23F 13/02 |
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| (84) |
Designated Contracting States: |
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AT BE CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
18.07.1986 US 888198
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
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87306336.6 / 0253671 |
| (71) |
Applicant: RAYCHEM CORPORATION |
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Menlo Park
California 94025 (US) |
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| (72) |
Inventors: |
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- Reed, James Patrick
W-8156 Otterfing (DE)
- Highe, Albert
Redwood City,
California 94061 (US)
- Masia, Michael
Redwood City,
California 94061 (US)
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| (74) |
Representative: Auckland Cooke, Jacqueline et al |
|
Raychem Limited
Intellectual Property Law Department
Faraday Road
Dorcan
Swindon, Wiltshire SN3 5HH
Swindon, Wiltshire SN3 5HH (GB) |
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| |
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Remarks: |
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This application was filed on 25 - 02 - 1992 as a divisional application to the application
mentioned under INID code 60. |
|
| (54) |
Corrosion protection |
(57) Corrosion protection systems which make use of a barrier (2) which is placed between
a corrodible substrate (3) and a counter-electrode (2). The barrier can provide more
uniform current distribution on the substrate, and/or enable the counter-electrode
to be more easily maintained or replaced, and/or reduce the rate at which the current
density on an elongate electrode changes with distance from the power source, and/or
provide a controlled environment around the electrode to improve its efficiency.