Method of making three-dimensional object

Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Using laser sintering of particulate material to build...

Reexamination Certificate

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C264S161000, C264S163000

Reexamination Certificate

active

10671688

ABSTRACT:
The invention relates to a method of making a three-dimensional object, comprising the steps of:(a) forming a powder material layer (10) of inorganic material;(b) irradiating an optical beam (L) on a predetermined portion of the powder material layer (10) to form a first sintered layer (11) and integrate the first sintered layer (11) with a second sintered layer (11) just below the first sintered layer (11);(c) repeating the steps (a) and (b) to form a sintered block (B) united with a plurality of the first and second sintered layers (11), the sides of the sintered block (B) including a concave portion (g);(d) removing an excess portion (17) from a surface of the sintered block (B); and(e) repeating the steps (c) and (d) with respect to the sintered block (B) from which the excess portion (17) is removed, in order to make a target shape of a three-dimensional object united with a plurality of the sintered blocks (B).

REFERENCES:
patent: 6657155 (2003-12-01), Abe et al.
patent: 6682684 (2004-01-01), Jamalabad et al.
patent: 7172724 (2007-02-01), Abe et al.
patent: 2002/0041818 (2002-04-01), Abe et al.
patent: 2006/0208396 (2006-09-01), Abe et al.
patent: 1347783 (2002-05-01), None
patent: 19953000 (2001-05-01), None
patent: 10148967 (2002-04-01), None
patent: 2620353 (1997-03-01), None
patent: 2000-306546 (2000-10-01), None
patent: 2001-152204 (2001-06-01), None
patent: 2002115004 (2002-04-01), None
patent: 88/02677 (1988-04-01), None
English Language Abstract of JP 2620353, (Mar. 11, 1997).
English Language Abstract of JP 2000-306546, (Oct. 5, 2000).
English Language Abstract JP 2001-152204, (Jun. 5, 2001).
English Language Abstract of DE 19953000, (May 17, 2001).

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