Patent US2111361A successfully refreshed from Google Patents.
Patent US3420759A successfully refreshed from Google Patents.
US3420759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromachining using an electrolyte having substantially the same resistivity as the electrode
Assignee: Individual
•
Filing: 1966-07-05
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Granted: 1969-01-07
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Kiyoshi Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:54
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF ELECTROCHEMICALLY REMOVING MATERIAL FROM A CONDUCTIVE WORKPIECE, COMPRISING THE STEPS OF: JUXTAPOSING A CONDUCTIVE ELECTRODE SURFACE WITH A SURFACE OF SAID WORKPIECE; URGIN ONE OF SAID SURFACES TOWARD THE OTHER OF SAID SURFACES TO FORM A COMMON INTERFACE BETWEEN SAID SURFACES; SUPPLYING TO SAID INTERFACE AN ELECTROLYTE HAVING A SPECIFIC RESISTIVITY SUBSTANTIALLY OF THE ORDER OF THAT OF SAID ELECTRODE SURFACE, THEREBY FORMING POCKETS OF SAID ELECTROLYTE AT SAID INTERFACE; RELATIVELY DISPLACING SAID SURFACES WHILE CONTINUING TO URGE SAID ONE OF SAID SURFACES TOWARD SAID OTHER SURFACE; AND APPLYING AN ELECTRIC CURRENT ACROSS SAID INTERFACE BETWEEN SAID SURFACES ELECTROCHEMICALLY TO ERODE MATERIAL FROM SAID WORKPIECE.
Claim 2
Independent Claim
108 words
A METHOD OF ELECTROCHEMICALLY REMOVING MATERIAL FROM A CONDUCTIVE WORKPIECE, COMPRISING THE STEPS OF: JUXTAPOSING A CONDUCTIVE ELECTRODE SURFACE WITH A SURFACE OF SAID WORKPIECE; URGIN ONE OF SAID SURFACES TOWARD THE OTHER OF SAID SURFACES TO FORM A COMMON INTERFACE BETWEEN SAID SURFACES; SUPPLYING TO SAID INTERFACE AN ELECTROLYTE HAVING A SPECIFIC RESISTIVITY SUBSTANTIALLY OF THE ORDER OF THAT OF SAID ELECTRODE SURFACE, THEREBY FORMING POCKETS OF SAID ELECTROLYTE AT SAID INTERFACE; RELATIVELY DISPLACING SAID SURFACES WHILE CONTINUING TO URGE SAID ONE OF SAID SURFACES TOWARD SAID OTHER SURFACE; AND APPLYING AN ELECTRIC CURRENT ACROSS SAID INTERFACE BETWEEN SAID SURFACES ELECTROCHEMICALLY TO ERODE MATERIAL FROM SAID WORKPIECE.
References Cited (Backward Citations)
US2974215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |