US3317705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for controlling the porosity of electrically sintered bodies
Assignee: Individual
•
Filing: 1963-11-29
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Granted: 1967-05-02
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:30
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/60; B; B22; B22F; B22F3/00; B22F3/10; B22F3/105; B22F3/11; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD OF SINTERING DISCRETE ELECTRICALLY CONDUCTIVE PARTICLES INTO A COHERENT BODY, COMPRISING THE STEPS OF: DISPOSING SAID PARTICLES IN A MASS BETWEEN A PAIR OF ELECTRODES; APPLYING TO SAID MASS A LIGHT PRESSURE SUFFICIENT TO ENSURE DEVELOPMENT OF A SPARK DISCHARGE BETWEEN ADJACENT PARTICLES UPON APPLICATION OF AN ELECTRIC FIELD BETWEEN SAID ELECTRODES; EFFECTING AN IMPULSIVE SPARK DISCHARGE THROUGH SAID MASS TO FORM FUSION BRIDGES BETWEEN ADJACENT PARTICLES AND CONTINUING THE PASSAGE OF A UNIDIRECTIONAL ELECTRIC CURRENT THROUGH SAID MASS AFTER INITIAL FORMATION OF SAID BRIDGES; SUPERIMPOSING UPON SAID UNIDIRECTIONAL CURRENT AN ALTERNATING CURRENT HAVING A FREQUENCY RANGING BETWEEN SUBSTANTIALLY 100 CYCLES/SEC. AND 10 KC./SEC; AND SELECTING THE FREQUENCY OF SAID ALTERNATING CURRENT IN ACCORDANCE WITH THE DESIRED DENSITY OF SAID BODY.
Claim 2
Independent Claim
123 words
A METHOD OF SINTERING DISCRETE ELECTRICALLY CONDUCTIVE PARTICLES INTO A COHERENT BODY, COMPRISING THE STEPS OF: DISPOSING SAID PARTICLES IN A MASS BETWEEN A PAIR OF ELECTRODES; APPLYING TO SAID MASS A LIGHT PRESSURE SUFFICIENT TO ENSURE DEVELOPMENT OF A SPARK DISCHARGE BETWEEN ADJACENT PARTICLES UPON APPLICATION OF AN ELECTRIC FIELD BETWEEN SAID ELECTRODES; EFFECTING AN IMPULSIVE SPARK DISCHARGE THROUGH SAID MASS TO FORM FUSION BRIDGES BETWEEN ADJACENT PARTICLES AND CONTINUING THE PASSAGE OF A UNIDIRECTIONAL ELECTRIC CURRENT THROUGH SAID MASS AFTER INITIAL FORMATION OF SAID BRIDGES; SUPERIMPOSING UPON SAID UNIDIRECTIONAL CURRENT AN ALTERNATING CURRENT HAVING A FREQUENCY RANGING BETWEEN SUBSTANTIALLY 100 CYCLES/SEC. AND 10 KC./SEC; AND SELECTING THE FREQUENCY OF SAID ALTERNATING CURRENT IN ACCORDANCE WITH THE DESIRED DENSITY OF SAID BODY.
References Cited (Backward Citations)
US3241956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |