Patent US2680678A successfully refreshed from Google Patents.
US2680678A
Expired / Lapsed
US
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Method of chemically polishing nickel
Assignee: RCA Corp
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Filing: 1952-04-01
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Granted: 1954-06-08
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:45
CPC Classifications
C; C23; C23F; C23F3/00; C23F3/04; C23F3/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A METHOD OF CHEMICALLY POLISHING A NICKEL SURFACE COMPRISING TREATING SAID SURFACE, IN CLEANED CONDITION, AT ROOM TEMPERATURE WITH A SOLUTION CONSISTING OF 60-70% BY VOLUME GLACIAL ACETIC ACID, 40-30% BY VOLUME CONCENTRATED NITRIC ACID, AND ABOUT 0.5 CC. CONCENTRATED HYDROCHLORIC ACID ACID PER 100 CC. OF SOLUTION.
References Cited (Backward Citations)
US2446060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |