US3285836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for anodizing
Assignee: International Business Machines Corp
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Filing: 1963-06-28
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Granted: 1966-11-15
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Leon I Maissel
- 👤 Charles L Standley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:08
CPC Classifications
H; H10; H10P; H10P95/00; C; C25; C25D; C25D11/00; C25D11/02; C25D11/26; H10W; H10W74/00; H10W74/40; H10W74/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF ANODIZING SELECTED AREAS OF THE METAL SURFACE OF A VALVE METAL LEAVING OTHER AREAS OF THE SURFACE UNANODIZED AND PRECISELY CONTROLLING THE DIMENSIONS OF THE UNANODIZED AREA COMPRISING, DEPOSITING A LAYER OF MASKING METAL ON SELECTED PORTIONS OF THE SURFACE OF A BASE METAL, SAID MASKING METAL AND SAID BASE METAL BEING DIFFERENT METALS AND SAID MASKING METAL BEING A VALVE METAL, ANODIZING BOTH THE SURFACE OF SAID BASE METAL WHERE EXPOSED AND THE SURFACE OF SAID LAYER OF MASKING METAL TO DEPOSIT A FILM OF BASE METAL OXIDE ON SAID BASE METAL WHERE EXPOSED AND A FILM OF MASKING METAL OXIDE ON SAID LAYER OF MASKING METAL, AND SELECTIVELY REMOVING SAID MASKING METAL AND SAID FILM OF MASKING METAL OXIDE FROM THE SURFACE OF SAID BASE METAL TO EXPOSE UNANODIZED AREAS ON THE SURFACE OF SAID BASE METAL, SAID UNANODIZED AREAS HAVING DIMENSIONS CORRESPONDING TO THE DIMENSIONS OF SAID LAYER OF MASKING METAL.
Claim 2
Independent Claim
157 words
A METHOD OF ANODIZING SELECTED AREAS OF THE METAL SURFACE OF A VALVE METAL LEAVING OTHER AREAS OF THE SURFACE UNANODIZED AND PRECISELY CONTROLLING THE DIMENSIONS OF THE UNANODIZED AREA COMPRISING, DEPOSITING A LAYER OF MASKING METAL ON SELECTED PORTIONS OF THE SURFACE OF A BASE METAL, SAID MASKING METAL AND SAID BASE METAL BEING DIFFERENT METALS AND SAID MASKING METAL BEING A VALVE METAL, ANODIZING BOTH THE SURFACE OF SAID BASE METAL WHERE EXPOSED AND THE SURFACE OF SAID LAYER OF MASKING METAL TO DEPOSIT A FILM OF BASE METAL OXIDE ON SAID BASE METAL WHERE EXPOSED AND A FILM OF MASKING METAL OXIDE ON SAID LAYER OF MASKING METAL, AND SELECTIVELY REMOVING SAID MASKING METAL AND SAID FILM OF MASKING METAL OXIDE FROM THE SURFACE OF SAID BASE METAL TO EXPOSE UNANODIZED AREAS ON THE SURFACE OF SAID BASE METAL, SAID UNANODIZED AREAS HAVING DIMENSIONS CORRESPONDING TO THE DIMENSIONS OF SAID LAYER OF MASKING METAL.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |