US3207582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of synthesizing diamond particles by utilizing electric discharge
Assignee: Individual
•
Filing: 1961-02-28
•
Granted: 1965-09-21
•
Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:28
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/08; B01J2203/00; B01J2203/06; B01J2203/0605; B01J2203/061; B01J2203/0625; B01J2203/065; B01J2203/0655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF PRODUCING DIAMOND PARTICLES COMPRISING THE STEPS OF: JUXTAPOSING A PAIR OF ELECTRODES INCLUDING AT LEAST ONE CONTIANING ELEMENTAL CARBON TO FORM A GAP THEREBETWEEN WHILE SURROUNDING SAID GAP WITH AN AMBIENT DIELECTRIC LIQUID ADAPTED TO PERMIT THE DEVELOPMENT OF A SPARK DISCHARGE ACROSS SAID GAP; AND INTERMITTENTLY ENERGIZING SAID ELECTRODES TO REPEATEDLY EFFECT AN IMPULSIVE SPARK DISCHARGE ACROSS SAID GAP THEREBY APPLYING TO PARTICLES OF CARBON ERODED FROM SAID ONE OF SAID ELECTRODES AN ELEVATED PRESSURE AT A TEMPERATURE SUFFICIENT TO CONVERT SAID PARTICLES OF CARBON INTO PARTICLES OF DIAMOND.
Claim 2
Independent Claim
93 words
A METHOD OF PRODUCING DIAMOND PARTICLES COMPRISING THE STEPS OF: JUXTAPOSING A PAIR OF ELECTRODES INCLUDING AT LEAST ONE CONTIANING ELEMENTAL CARBON TO FORM A GAP THEREBETWEEN WHILE SURROUNDING SAID GAP WITH AN AMBIENT DIELECTRIC LIQUID ADAPTED TO PERMIT THE DEVELOPMENT OF A SPARK DISCHARGE ACROSS SAID GAP; AND INTERMITTENTLY ENERGIZING SAID ELECTRODES TO REPEATEDLY EFFECT AN IMPULSIVE SPARK DISCHARGE ACROSS SAID GAP THEREBY APPLYING TO PARTICLES OF CARBON ERODED FROM SAID ONE OF SAID ELECTRODES AN ELEVATED PRESSURE AT A TEMPERATURE SUFFICIENT TO CONVERT SAID PARTICLES OF CARBON INTO PARTICLES OF DIAMOND.
References Cited (Backward Citations)
US354310A
Cited
US618704A
Cited
US1744173A
Cited
US1673245A
Cited
US2148356A
Cited
US2191012A
Cited
US2755199A
Cited
US2876083A
Cited
US2947608A
Cited
US2941897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |