The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1989
Filed:
Jan. 11, 1988
Minoru Yamamoto, Nishio, JP;
Nobuei Ito, Okazaki, JP;
Hiroshi Uesugi, Nishio, JP;
Tadashi Hattori, Okazaki, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
A device for forming a diamond film has a casing in which a vacuum is maintained to 50 Torr: a positive electrode and a negative electrode are disposed within the casing so that ends of the positive electrode and the negative electrode are opposed to each other through a space: a substrate is disposed near the space between the electrodes, a gas inlet pipe supplies a mixture gas of hydrogen, argon and methane to the space between the electrodes and an arc power supply is connected to the electrodes for supplying a predetermined arc output power thereacross to form an arc discharge column in the space therebetween. By supplying the mixture gas to the arc discharge column of which the temperature is extremely high, the mixture gas is decomposed at a high rate, and a diamond film of high purity grows on the substrate at a high speed.