Patent US3084245A successfully refreshed from Google Patents.
US3084245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-discharge machining of metals and the like
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1961-07-24
•
Granted: 1963-04-02
•
Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 Tardy Pierre Anthelme
- 👤 Bruma Marc
- 👤 Magat Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:44
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; B; B23; B23H; B23H1/00; B23H1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A METHOD OF THE CHARACTER DESCRIBED FOR THE ELECTRIC DISCHARGE MACHINING OF A BLAOCK OF METAL BY CUTTING THE METAL WITH AN ELECTRICAL DISCHARGE FROM AN ELECTRODE, THE STEPS WHICH COMPRISE IMMERSING SAID BLOCK OF METAL AND SAID ELECTRODE IN A DIELECTRIC BATH COMPRISING AROMATIC PETROLEUM HYDROCARBON, SAID HYDROCARBON BATH HAVING A CARBON-TO-HYDROGEN WEIGHT RATIO IN EXCESS OF 7, AND MAINTAINING SAID METAL IN SAID BATH DURING SAID ELECTRIC DISCHARGE MACHINING THEREOF.
Claim 2
Dependent Claim
73 words
IN A METHOD OF THE CHARACTER DESCRIBED FOR THE ELECTRIC DISCHARGE MACHINING OF A BLAOCK OF METAL BY CUTTING THE METAL WITH AN ELECTRICAL DISCHARGE FROM AN ELECTRODE, THE STEPS WHICH COMPRISE IMMERSING SAID BLOCK OF METAL AND SAID ELECTRODE IN A DIELECTRIC BATH COMPRISING AROMATIC PETROLEUM HYDROCARBON, SAID HYDROCARBON BATH HAVING A CARBON-TO-HYDROGEN WEIGHT RATIO IN EXCESS OF 7, AND MAINTAINING SAID METAL IN SAID BATH DURING SAID ELECTRIC DISCHARGE MACHINING THEREOF.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |