US3573185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anodic sputtering
Assignee: United States Department of the Army
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Filing: 1968-12-16
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Granted: 1971-03-30
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Expires: 1988-12-16
Abstract
Abstract PROCESSES FOR ANODIZING OR SPUTTERING METAL ANODES, OR FOR SPUTTERING AND ANODIZING VALVE METAL ANODES SUCH AS TANTALUM SUBSTANTIALLY SIMULTANEOUSLY, BY ELECTRICALLY CONNECTING THE ANODE IN A VACUUM VESSEL AND CONTROLLABLY IMPACTING THE ANODE WITH NEGATIVE IONS. ANODIZATION WILL OCCUR WHEN LOWER VOLTAGES ARE EMPLOYED TO PROPEL THE NEGATIVE IONS TOWARD THE ANODE WHEREAS HIGHER VOLTAGES WILL RESULT IN SPUTTERING OF THE ANODE. INTERMEDIATE VOLTAGES WILL PRODUCE THE PHENOMENON OF SPUTTERING AND ANODIZATION OF SUITABLE SURFACES.
Inventors
- 👤 Thomas A Jennings
- 👤 William Mcneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:45
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/34; H01J37/3402; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |