US3890430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing diamond materials
Assignee: Individual
•
Filing: 1974-01-28
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Granted: 1975-06-17
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Expires: 1994-01-28
Abstract
Abstract To synthesize diamond a carbonaceous material in the presence of metals, such as zinc, magnesium, lead, cadmium, bismuth, tin, indium, antimony, thallium, aluminium, mercury and compounds thereof is subjected to a pressure of at least 60 kbar at a temperature of at least 1700*C within the range of diamond stability.
Inventors
- 👤 Valentin Nikolaevich Bakul
- 👤 Alexandr Alexandrov Shulzhenko
- 👤 Anatoly Fedorovich Getman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:29
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/062; B01J2203/00; B01J2203/06; B01J2203/0605; B01J2203/061; B01J2203/0625; B01J2203/065; B01J2203/0655; B01J2203/0675; B01J2203/068
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
IN A METHOD FOR THE SYNTHESIS OF DIAMOND FROM A REACTION MIXTURE CONSISTING OF A CARBONACEOUS MATERIAL AND A CARBON SOLVENT UNDER A PRESSURE OF AT LEAST 60 KBAR AND AT TEMPERATURE OF AT LEAST 1,700*C WITHIN THE RANGE OF DIAMOND STABILITY THE IMPROVEMENT CONSISTING IN THAT CARBON SOLVENT CONSISTS OF; A. A MEMBER SELECTED FROM THE GROUP CONSISTING OF ZINC, MAGNESIUM AND COMBINATION THEROF, AND B. A MEMBER SELECTED FROM THE GROUP CONSISTING OF LEAD, LEAD SELENIDE, CADMIUM, BISMUTH, TIN, INDIUM, ANTIMONY, THALLIUM, MERCURY OXIDE AND COMBINATION THEREOF.
Claim 2
Dependent Claim
89 words
IN A METHOD FOR THE SYNTHESIS OF DIAMOND FROM A REACTION MIXTURE CONSISTING OF A CARBONACEOUS MATERIAL AND A CARBON SOLVENT UNDER A PRESSURE OF AT LEAST 60 KBAR AND AT TEMPERATURE OF AT LEAST 1,700*C WITHIN THE RANGE OF DIAMOND STABILITY THE IMPROVEMENT CONSISTING IN THAT CARBON SOLVENT CONSISTS OF; A. A MEMBER SELECTED FROM THE GROUP CONSISTING OF ZINC, MAGNESIUM AND COMBINATION THEROF, AND B. A MEMBER SELECTED FROM THE GROUP CONSISTING OF LEAD, LEAD SELENIDE, CADMIUM, BISMUTH, TIN, INDIUM, ANTIMONY, THALLIUM, MERCURY OXIDE AND COMBINATION THEREOF.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein said carbon solvent is an alloy of said members.
Claim 4
Dependent Claim
15 words
The method of claim 1, wherein said carbon solvent is a mixture of said members.
References Cited (Backward Citations)
US2947609A
Cited
US3488153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |