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. 26, 2019
Filed:
Nov. 18, 2016
Kazuhiro Nagata, Yokohama, JP;
Shimizu Densetsu Kogyo Co., Ltd., Amagasaki-shi, JP;
Kazuhiro Nagata, Yokohama, JP;
Miyuki Kanazawa, Tokyo, JP;
KAZUHIRO NAGATA, Yokohama-Shi, Kanagawa, JP;
SHIMIZU DENSETSU KOGYO CO., LTD., Amagasaki-Shi, Hyogo, JP;
Abstract
A microwave reduction furnace including a reaction furnace provided with a refractory chamber of silica or silicon carbide for storing a material therein, a supply section for supplying the material into the refractory chamber, the material being a mixture of a silica powder and a graphite powder or a mixture of a silica powder, a silicon carbide powder and a graphite powder, a discharge section for discharging molten silicon, obtained through reduction, out of the chamber, and a microwave oscillator for outputting microwave toward the refractory chamber in the reaction furnace with a degree of directionality by virtue of a helical antenna or a waveguide.