Patent US3556883A successfully refreshed from Google Patents.
US3556883A
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US
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Method for chemically polishing copper or copper alloy
Assignee: Mitsubishi Edogawa Kagaku KK
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Filing: 1967-07-21
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Granted: 1971-01-19
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Expires: 1987-07-21
Abstract
Abstract THIS INVENTION RELATES TO A METHOD FOR POLISHING COPPER OR COPPER ALLOYS SO AS TO OBTAIN LUSTROUS SURFACES WHICH INVOLVES TREATING COPPER OR COPPER ALLOY ARTICLES WITH A MIXTURE OF AN AQUEOUS SOLUTION OF HYDROGEN PEROXIDE, AN ACID, AND A SATURATED ALIPHATIC ALCOHOL TO FORM THEREBY AN OXIDE FILM ON THE SURFACE OF SAID ARTICLE, AND THEREAFTER REMOVING THE FILM BY CHEMICAL DISSOLUTION.
Inventors
- 👤 Akira Naito
- 👤 Shigeo Ohsawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:00
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/48; C23C22/52; C23F; C23F3/00; C23F3/04; C23F3/06
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |