Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
2011-08-09
2011-08-09
Sample, David R (Department: 1783)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C428S220000, C428S446000, C428S613000, C428S319100, C164S098000, C148S522000, C451S038000, C420S117000
Reexamination Certificate
active
07993728
ABSTRACT:
A base plate for power module, comprising an aluminum-silicon carbide composite and aluminum layers made of a metal containing aluminum as the main component formed on respective principal planes of the aluminum-silicon carbide composite, wherein the aluminum-silicon carbide composite is produced by forming or fabricating a flat plate-shaped silicon carbide porous body to have a thickness difference of at most 100 μm in the entire porous body and piling such porous bodies as they are each sandwiched between mold-releasing plates so that the fastening torque in the plane direction becomes from 1 to 20 Nm, and infiltrating a metal containing aluminum as the main component into the silicon carbide porous bodies,wherein the aluminum layers each has an average thickness of from 10 to 150 μm, the difference between the maximum thickness and the minimum thickness of the aluminum layer in each principal plane is at most 80 μm, and the difference between average thicknesses of the aluminum layers on the respective principal planes is at most 50 μm, and wherein the shape of the silicon carbide porous body is rectangle or a rectangle from which peripheral portions encompassing holes are removed.
REFERENCES:
patent: 5774336 (1998-06-01), Larson
patent: 6388273 (2002-05-01), Yamagata et al.
patent: 6447894 (2002-09-01), Hirotsuru et al.
patent: 2007/0248829 (2007-10-01), Iwamoto et al.
patent: 1 237 397 (2002-09-01), None
patent: 1 345 264 (2003-09-01), None
patent: 1 770 773 (2007-04-01), None
patent: 1 858 078 (2007-11-01), None
patent: 2 382 082 (2003-05-01), None
patent: 3022925 (2000-01-01), None
patent: 2003 297988 (2003-10-01), None
patent: 2003 300788 (2003-10-01), None
patent: WO 2006030676 (2006-03-01), None
patent: 2006/077755 (2006-07-01), None
U.S. Appl. No. 12/095,005, filed May 27, 2008, Hirotsuru, et al.
Supplementary European Search Report issued Sep. 8, 2010, in European Patent Application No. 07742205.3, filed Apr. 23, 2007.
Hashimoto Nobuyuki
Higuma Satoshi
Hirotsuru Hideki
Iwamoto Goh
Tsukamoto Hideo
Denki Kagaku Kogyo Kabushiki Kaisha
Khan Tahseen
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sample David R
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