US3240685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for selective anodization
Assignee: International Business Machines Corp
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Filing: 1962-02-23
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Granted: 1966-03-15
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Expires: 1982-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leon I Maissel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:04
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/26; H01C17/262; C; C25; C25D; C25D11/00; C25D11/02; C25D11/022; H10; H10N; H10N97/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A SHAPED ELECTRODE FOR SELECTIVELY ANODIZING AN ARTICLE, SAID ELECTRODE COMPRISING: A MEMBER COMPOSED OF INSULATING MATERIAL HAVING AT LEAST ONE OPENING THERETHROUGH; A CONDUCTIVE LAYER ON ONE OF THE SIDES OF SAID MEMBER CONTAINING SAID OPENING; A MEMBER OF CONDUCTIVE MATERIAL POSITIONED ON THE SIDE OF SAID INSULATING MEMBER CONTAINING THE OPENING OPPOSITE TO THE SIDE HAVING SAID CONDUCTIVE LAYER THEREON; SAID CONDUCTIVE LAYER AND MEMBER BEING COMPOSED OF A MATERIAL THAT WILL REMAIN SUBSTANTIALLY UNOXIDIZED IN THE ANODIZING SOLUTION; MEANS FOR CONNECTING SAID CONDUCTIVE LAYER TO A SOURCE OF POSITIVE POTENTIAL; AND MEANS FOR CONNECTING SAID MEMBER OF CONDUCTING MATERIAL TO A SOURCE OF NEGATIVE POTENTIAL.
Claim 2
Dependent Claim
109 words
IN A SHAPED ELECTRODE FOR SELECTIVELY ANODIZING AN ARTICLE, SAID ELECTRODE COMPRISING: A MEMBER COMPOSED OF INSULATING MATERIAL HAVING AT LEAST ONE OPENING THERETHROUGH; A CONDUCTIVE LAYER ON ONE OF THE SIDES OF SAID MEMBER CONTAINING SAID OPENING; A MEMBER OF CONDUCTIVE MATERIAL POSITIONED ON THE SIDE OF SAID INSULATING MEMBER CONTAINING THE OPENING OPPOSITE TO THE SIDE HAVING SAID CONDUCTIVE LAYER THEREON; SAID CONDUCTIVE LAYER AND MEMBER BEING COMPOSED OF A MATERIAL THAT WILL REMAIN SUBSTANTIALLY UNOXIDIZED IN THE ANODIZING SOLUTION; MEANS FOR CONNECTING SAID CONDUCTIVE LAYER TO A SOURCE OF POSITIVE POTENTIAL; AND MEANS FOR CONNECTING SAID MEMBER OF CONDUCTING MATERIAL TO A SOURCE OF NEGATIVE POTENTIAL.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |