US4339304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating diamond
Assignee: Individual
•
Filing: 1980-12-30
•
Granted: 1982-07-13
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Expires: 2000-12-30
Abstract
Abstract The method of treating diamond is characterized in that a diamond is treated by contacting it with a template within the temperature, range from 600° to 1800° C., with both diamond and template being at the same temperature and the template being made of a metal or an alloy which dissolves the diamond carbon at the selected contact temperature and the diamond contact with the template is effected in vacuum, an atmosphere of inert gas or in an atmosphere of a gas which does not react with diamond at the contact temperature but reacts at such temperature with the diamond carbon dissolved in the metal or alloy.
Inventors
- 👤 Anatoly P. Grigoriev
- 👤 Sara K. Lifshits
- 👤 Pavel P. Shamaev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:46
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/04; C01; C01B; C01B32/00; C01B32/25; C01B32/28; C30B33/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
The method of treating diamond, which comprises contacting a diamond with a template made of a metal or an alloy which at a temperature of about 600° C. to 1800° C. dissolves the diamond carbon, heating said diamond and template in contact therewith at a temperature of about 600° C. to about 1800° C. under vacuum, or in an inert gas atmosphere or in an atmosphere of a gas which at said temperature does not react with diamond but does react with the diamond carbon which becomes dissolved in said metal or alloy, whereby said template in contact with said diamond at said temperature in said atmosphere dissolves diamond carbon in contact therewith, thus changing the appearance of said diamond.
Claim 2
Independent Claim
120 words
The method of treating diamond, which comprises contacting a diamond with a template made of a metal or an alloy which at a temperature of about 600° C. to 1800° C. dissolves the diamond carbon, heating said diamond and template in contact therewith at a temperature of about 600° C. to about 1800° C. under vacuum, or in an inert gas atmosphere or in an atmosphere of a gas which at said temperature does not react with diamond but does react with the diamond carbon which becomes dissolved in said metal or alloy, whereby said template in contact with said diamond at said temperature in said atmosphere dissolves diamond carbon in contact therewith, thus changing the appearance of said diamond.
Claim 3
Dependent Claim
17 words
Method according to claim 1 wherein said template is made of iron, nickel, platinum or alloys thereof.
Claim 4
Dependent Claim
21 words
Method according to claim 1 wherein said atmosphere is comprised of hydrogen, water vapor, carbon dioxide, air, oxygen or mixtures thereof.
References Cited (Backward Citations)
US1637291A
Cited
US3652220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |