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:
Feb. 28, 1995
Filed:
Jan. 15, 1993
Kazunori Itoh, Sendai, JP;
Masafumi Kumano, Sendai, JP;
Ricoh Company, Ltd., Tokyo, JP;
Ricoh Research Institute of General Electronics, Co., Ltd., Natori, JP;
Abstract
An electron-beam heating apparatus in which an electron-beam of a stable intensity can be obtained. The apparatus is provided with a heating unit having two electrodes comprising a cathode and an anode. A heating of a material is performed by using an electron-beam generated by glow discharge generated in a space between the two electrodes. The apparatus is provided with an electric power source and a current control unit. The electric power source supplies an electric current to the electrodes so as to generate the glow discharge in a space between the two electrodes. The current control unit controls the current flowing to the cathode so as to be constant to obtain a constant glow discharge formed in a space between the two electrodes. A constant electron-beam is obtained by the glow discharge.