US3134739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for and product produced by the introduction of aluminum atoms into the surface of diamond crystals
Assignee: General Electric Co
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Filing: 1961-08-31
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Granted: 1964-05-26
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Expires: 1981-08-31
Abstract
No abstract record available.
Inventors
- 👤 Cannon Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:34
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/04; B; B01; B01J; B01J3/00; B01J3/06; B01J3/062; B01J2203/00; B01J2203/06; B01J2203/0605; B01J2203/062; B01J2203/065; B01J2203/0655; B01J2203/0675; B01J2203/068; B01J2203/069; Y; Y10; Y10S; Y10S252/00; Y10S252/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD FOR DIFFUSING ALUMINUM ATOMS INTO A DIAMOND CRYSTAL COMPRISING THE STEPS OF: (A) SUBJECTING A DIAMOND CRYSTAL TO A PRESSURE OF AT LEAST 10,000 ATMOSPHERES AND A TEMPERATURE OF AT LEAST 700*C. IN THE PRESENCE OF AN ACTIVATOR MATERIAL, (1) SAID ACTIVATOR MATERIAL BEING A SUBSTANCE FROM WHICH UNDER THE OPERATING PRESSURE AND TEMPERATURE ALUMINUM ATOMS ARE REMOVED FROM SAID SUBSTANCE AND ARE ULTIMATELY DIFFUSED INTO THE LATTICE OF SAID DIAMOND CRYSTAL, (2) SAID ACTIVATOR MATERIAL BEING PRESENT IN AN AMOUNT BY WEIGHT IN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 30 PERCENT OF THE WEIGHT OF DIAMOND, AND (B) RECOVERING THE ALUMINUM-IMPREGNATED CRYSTAL.
Claim 2
Independent Claim
107 words
A METHOD FOR DIFFUSING ALUMINUM ATOMS INTO A DIAMOND CRYSTAL COMPRISING THE STEPS OF: (A) SUBJECTING A DIAMOND CRYSTAL TO A PRESSURE OF AT LEAST 10,000 ATMOSPHERES AND A TEMPERATURE OF AT LEAST 700*C. IN THE PRESENCE OF AN ACTIVATOR MATERIAL, (1) SAID ACTIVATOR MATERIAL BEING A SUBSTANCE FROM WHICH UNDER THE OPERATING PRESSURE AND TEMPERATURE ALUMINUM ATOMS ARE REMOVED FROM SAID SUBSTANCE AND ARE ULTIMATELY DIFFUSED INTO THE LATTICE OF SAID DIAMOND CRYSTAL, (2) SAID ACTIVATOR MATERIAL BEING PRESENT IN AN AMOUNT BY WEIGHT IN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 30 PERCENT OF THE WEIGHT OF DIAMOND, AND (B) RECOVERING THE ALUMINUM-IMPREGNATED CRYSTAL.
References Cited (Backward Citations)
US2947609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |