US3711595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical method for producing diamonds and fluorinated diamonds
Assignee: R I PATENTS Inc
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Filing: 1971-07-22
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Granted: 1973-01-16
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Expires: 1991-07-22
Abstract
Abstract Diamonds, as well as fluorinated diamonds, can be produced by reacting a fluorinated carbon material, such as polytetrafluoroethylene, carbon monofluoride or polytrichlorofluoroethylene, with aluminum, magnesium or nickel at temperatures in excess of about 375*C. and pressures in excess of about 5,000 atmospheres. The preferred reaction temperature range is from about 600*C. to about 750*C. and the preferred reaction pressure range is from about 10,000 atmospheres to about 20,000 atmospheres.
Inventors
- 👤 J Margave
- 👤 R Bautista
- 👤 P Ficalora
- 👤 R Badachhape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:14
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/062; B01J2203/00; B01J2203/06; B01J2203/0605; B01J2203/061; B01J2203/065; B01J2203/0655; B01J2203/0675; B01J2203/068
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
13 words
The method according to claim 1 wherein the fluorinated carbon compound is polytetrafluoroethylene.
Claim 2
Dependent Claim
14 words
The method according to claim 1 wherein the fluorinated carbon compound is carbon monofluoride.
Claim 3
Dependent Claim
37 words
The method according to claim 1 wherein the fluorinated carbon compound and the metal are subjected to a temperature between about 600*C. and about 750*C. and to a pressure between about 10,000 atmospheres and about 20,000 atmospheres.
Claim 4
Dependent Claim
40 words
The method according to claim 1 wherein the pressure and the temperature to which the fluorinated carbon compound and the metal are subjected are slowly increased for at least about 20 minutes and maintained for at least about one hour.
Claim 5
Dependent Claim
18 words
The method according to claim 1 wherein the fluorinated carbon compound is polytetrafluoroethylene and the metal is magnesium.
Claim 6
Dependent Claim
20 words
The method according to claim 1 wherein the fluorinated carbon compound is superstoichiometric carbon monofluoride and the metal is magnesium.
Claim 7
Dependent Claim
20 words
The method according to claim 1 wherein the fluorinated carbon compound is superstoichiometric carbon monofluoride and the metal is aluminum.
Claim 8
Dependent Claim
18 words
The method according to claim 1 wherein the fluorinated carbon compound is polytrichlorofluoroethylene and the metal is magnesium.
Claim 9
Dependent Claim
19 words
The method according to claim 1 wherein the fluorinated carbon compound is polyvinylidene fluoride and the metal is magnesium.
Claim 10
Independent Claim
76 words
A method for making diamonds and fluorinated diamonds which comprises: a. placing a fluorinated carbon compound and a metal selected from the class consisting of aluminum, magnesium and nickel in an enclosed chamber; b. subjecting the fluorinated carbon compound and the metal to a pressure of at least 5,000 atmospheres and to a temperature of at least about 375*C. for a time sufficient to form diamond; and c. recovering the diamonds and fluorinated diamonds so formed.
Claim 11
Dependent Claim
13 words
The method according to claim 11 wherein the fluorinated carbon compound is polytetrafluoroethylene.
Claim 12
Dependent Claim
18 words
The method according to claim 12 wherein the metal is powdered magnesium and the polytetrafluoroethylene is a powder.
Claim 13
Dependent Claim
21 words
The method according to claim 11 wherein the fluorinated carbon compound is superstoichiometric carbon monofluoride and the metal is powdered magnesium.
Claim 14
Independent Claim
98 words
A method for making diamonds and fluorinated diamonds which comprises: a. placing a fluorinated carbon compound and a metal selected from the class consisting of aluminum, magnesium and nickel in an enclosed high-pressure chamber; b. increasing the pressure in the chamber to at least about 5, 000 atmospheres and the temperature between about 375*C. and about 675*C. in a period of time of at least about 20 minutes; c. maintaining the pressure and temperature in the chamber for a period of time of at least about 1 hour; and d. recovering the diamonds and fluorinated diamonds so formed.
Claim 15
Dependent Claim
17 words
The method according to claim 15 wherein the fluorinated carbon is polytetrafluoroethylene and the metal is magnesium.
Claim 16
Dependent Claim
57 words
The method according to claim 15 wherein the temperature in the container is increased to a temperature in the range from about 600*C. to about 750*C. and the pressure in the container is increased to a pressure in the range from about 10,000 atmospheres to about 20,000 atmospheres in a period of time of about 2 hours.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |