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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.:

US 11634577 B1

PDFFull Text
Date of Patent:
Apr. 25, 2023

Filed:

Jan. 28, 2015

Resin powder material, laser powder molding method and device

Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Satoshi Arai, Tokyo, JP;

Shigeharu Tsunoda, Tokyo, JP;

Assignee:

HITACHI, LTD., Tokyo, JP;

Attorney:

Miles & Stockbridge, P.C.

Primary Examiner:

Ling Siu Choi

Assistant Examiner:

Gennadiy Mesh

Int. Cl.
CPC ...
C08G 63/183 (2006.01); C08K 3/016 (2018.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08K 7/14 (2006.01); B29C 64/153 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B33Y 70/00 (2020.01); C08L 67/02 (2006.01); B29C 64/40 (2017.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
C08L 67/02 (2013.01); B29C 64/153 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/00 (2014.12); C08G 63/183 (2013.01); C08K 3/016 (2018.01); C08K 3/36 (2013.01); C08K 5/0066 (2013.01); C08K 7/14 (2013.01); B29K 2067/006 (2013.01); B29K 2105/251 (2013.01); C08L 2201/02 (2013.01);
Abstract

A resin powder material comprising copolymerized polybutylene terephthalate resin powder and an inorganic substance, for example, fumed silica, having an average primary particle diameter of 100 nm or less in an amount up to 1.0 wt %. The polybutylene terephthalate resin comprises from 5 mol % to 15 mol % of Isophthalic acid and has powder with average particles diameter of 79 μm and a maximum particles diameter of 106 μm. Powder is obtained by grinding pellets of the copolymerized polybutylene terephthalate resin having a viscosity of 0.85 to 1.0 dl/g. Powder composition used for production of molded articles by powder laminate molding process.

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