Patent US3202595A successfully refreshed from Google Patents.
US3202595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-chemical machining process
Assignee: Individual
•
Filing: 1960-08-23
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Granted: 1965-08-24
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Expires: 1980-08-23
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
B; B23; B23H; B23H3/00; B23H3/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
AN ELECTRO-CHEMICAL MACHINING PROCESS COMPRISING OPERATIVELY POSITIONING A PRE-FORMED HOLLOW ELECTRODE CONSTITUTED BY TWO METALS HAVING DIFFERENT ELECTROLYSIS VOLTAGES AND A WORKPIECE IN AN ELECTROLYTE WITHIN AN ELECTROLYTIC CELL, CONNECTING SAID ELECTRODE AND WORKPIECE TO AN ELECTRICAL SOURCE TO PROVIDE ELECTROLYTIC ACTION TO ELECTROLYTICALLY CORRODE THE METAL OF THE ELECTRODE HAVING THE LOWER ELECTROLYSIS VOLTAGE WHEREBY A PERFORATED ELECTRODE IS PRODUCED, EXHAUSTING THE ELECTROLYTE FROM THE CELL AND ELECTROCHEMICALLY MACHINING THE WORKPIECE BY REVERSING THE POLARITY OF SAID ELECTRIC SOURCE AND CONTINUOUSLY EJECTING ELECTROLYTE FROM WITHIN SAID PERFORATED HOLLOW ELECTRODE AGAINST THE WORKPIECE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |