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:
Jan. 25, 2022
Filed:
Sep. 11, 2018
Advantest Corporation, Tokyo, JP;
Shinji Sugatani, Saitama, JP;
Shigeki Nishina, Saitama, JP;
Jun Matsumoto, Saitama, JP;
Masahiro Takizawa, Saitama, JP;
Minoru Soma, Saitama, JP;
Akio Yamada, Saitama, JP;
ADVANTEST CORPORATION, Tokyo, JP;
Abstract
Provided is a three-dimensional laminating and shaping apparatusincluding a column unitthat is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer, an insulating portion that electrically insulates a three-dimensional structurefrom a ground potential member, an ammeterthat is configured to measure the current value indicative of the current flowing into the ground after passing through the three-dimensional structure, a melting judging unitthat is configured to detect that the powder layeris melted based on the current value measured by the ammeterand generate a melting signal, and a deflection controllerthat is configured to receive the melting signal to determine the condition for the irradiation with the electron beam.