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:
Mar. 19, 2024
Filed:
Mar. 14, 2022
Sankei Giken Kogyo Co., Ltd., Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Solize Corporation, Tokyo, JP;
Daisuke Sato, Tokyo, JP;
Kazuo Igarashi, Wako, JP;
Hiroyuki Ikeno, Wako, JP;
Satoru Nishimoto, Wako, JP;
Takashi Inomata, Tokyo, JP;
Ryota Masuda, Tokyo, JP;
Kohei Mutai, Tokyo, JP;
SANKEI GIKEN KOGYO CO., LTD., Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
SOLIZE CORPORATION, Tokyo, JP;
Abstract
A method for producing a resin sintered bodyby applying an inkto thermoplastic resin powderand sintering the powder, the method including the step of immersing an intermediate resin sintered body, which has an unevenly colored region on the surface thereof and the whole of which has been already sintered, in a surface treatment liquid containing sulfuric acid and chromic anhydride, in which the concentration of chromic anhydride is 300 g/L or more, for 5 minutes or longer. When producing a resin sintered body by sintering thermoplastic resin powder, the surface of the resin sintered body can be evenly and sufficiently colored to an extent required without an unevenly colored region on the surface thereof, and also the surface of the resin sintered body can have a good appearance and smoothness.