US3141855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for and product produced by the introduction of boron atoms into the surface of diamond crystals
Assignee: General Electric Co
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Filing: 1961-08-31
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Granted: 1964-07-21
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Expires: 1981-08-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Wentorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:41
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
108 words
A METHOD FOR DIFFUSING BORON ATOMS INTO A DIAMOND CRYSTAL COMPRISING THE STEPS OF: (A) SUBJECTING A DIAMOND CRYSTAL TO A PRESSURE OF AT LEAST 8500 ATMOSPHERES AND A TEMPERATURE OF AT LEAST 1300*C. IN THE PRESENCE OF AN ACTIVATOR MATERIAL, (1) SAID ACTIVATOR MATERIAL BEING A SUBSTANCE FROM WHICH UNDER THE OPERATING PRESSURE AND TEMPERATURE BORON 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 OF FROM ABOUT 0.1 PERCENT TO ABOUT 50 PERCENT OF THE WEIGHT OF DIAMOND, AND (B) REMOVING THE BORON-IMPREGNATED CRYSTAL.
Claim 2
Independent Claim
108 words
A METHOD FOR DIFFUSING BORON ATOMS INTO A DIAMOND CRYSTAL COMPRISING THE STEPS OF: (A) SUBJECTING A DIAMOND CRYSTAL TO A PRESSURE OF AT LEAST 8500 ATMOSPHERES AND A TEMPERATURE OF AT LEAST 1300*C. IN THE PRESENCE OF AN ACTIVATOR MATERIAL, (1) SAID ACTIVATOR MATERIAL BEING A SUBSTANCE FROM WHICH UNDER THE OPERATING PRESSURE AND TEMPERATURE BORON 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 OF FROM ABOUT 0.1 PERCENT TO ABOUT 50 PERCENT OF THE WEIGHT OF DIAMOND, AND (B) REMOVING THE BORON-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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |