US3241956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-discharge sintering
Assignee: Individual
•
Filing: 1963-10-29
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Granted: 1966-03-22
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Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:29
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/105; H; H01; H01F; H01F41/00; H01F41/02; H01F41/0253; H01F41/0266
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
APPARATUS FOR SINTERING ELECTRICALLY CONDUCTIVE PARTICLES INTO A COHERENT BODY, COMPRISING A PAIR OF ELECTRODES ADAPTED TO SANDWICH A MASS OF SAID PARTICLES BETWEEN THEM WITH A RELATIVELY LOW INITIAL PRESSURE; MEANS FOR APPLYING AN IMPULSIVE UNIDIRECTIONAL ELECTRIC CURRENT TO SAID ELECTRODES TO EFFECT AN IMPULSIVE SPARK DISCHARGE THEREBETWEEN TO FORM CONDUCTIVE BRIDGES AMONG SAID PARTICLES; MEANS CONNECTED ACROSS SAID ELECTRODES FOR APPLYING AN ALTERNATING CURRENT THERETO; AND MEANS FOR INCREASING THE PRESSURE APPLIED TO SAID MASS UPON THE FORMATION OF SAID BRIDGES.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |