Patent US2874104A successfully refreshed from Google Patents.
US2874104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electropolishing method
Assignee: GTE Sylvania Inc
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Filing: 1954-10-26
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Granted: 1959-02-17
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Expires: 1974-10-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Bowerman
- 👤 Edward B Saubestre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:20
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF ELECTROPOLISHING A NICKEL PART INCLUDING THE STEPS OF MAKING SAID PART THE ANODE IN AN ELECTROLYTIC SOLUTION CONSISTING ESSENTIALLY OF HYDROCHLORIC ACID AND ACETIC ACID WHICH ARE PRESENT IN REATIVE PERCENTAGES BY VOLUME LYING WITHIN THE AREAS DEFINED APPROXIMATELY IN
Claim 2
Independent Claim
43 words
THE METHOD OF ELECTROPOLISHING A NICKEL PART INCLUDING THE STEPS OF MAKING SAID PART THE ANODE IN AN ELECTROLYTIC SOLUTION CONSISTING ESSENTIALLY OF HYDROCHLORIC ACID AND ACETIC ACID WHICH ARE PRESENT IN REATIVE PERCENTAGES BY VOLUME LYING WITHIN THE AREAS DEFINED APPROXIMATELY IN
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |