Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-05-11
2011-11-08
Cain, Edward J (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C106S482000, C423S335000, C524S492000, C524S493000
Reexamination Certificate
active
08053495
ABSTRACT:
The present invention provides ceramic powder capable of being incorporated into rubber or a resin for the preparation of a composition, which shows excellent heat resistance and flame retardancy and which is used, for instance, as a semiconductor-sealing material. The ceramic powder has a multi-peak frequency distribution pattern having at least two peaks as a particle size distribution as determined using a laser diffraction-scattering type particle size-analyzer, wherein the maximum particle size for the first peak ranges from 40 to 80 μm and that for the second peak ranges from 3 to 8 μm and wherein the rate of the particles having a particle size of not less than 20 μm and less than 40 μm is not more than 20% by mass (inclusive of 0% by mass).
REFERENCES:
patent: 6365269 (2002-04-01), Atzesdorfer et al.
patent: 1288914 (2001-03-01), None
patent: 3 66151 (1991-03-01), None
patent: 6 80863 (1994-03-01), None
patent: 8 3365 (1996-01-01), None
patent: 2001 158614 (2001-06-01), None
patent: 2002 252314 (2002-09-01), None
patent: 2003-110065 (2003-04-01), None
patent: 2004 59343 (2004-02-01), None
patent: 2005 306923 (2005-11-01), None
patent: WO 2005/061615 (2005-07-01), None
patent: WO 2006/011662 (2006-02-01), None
U.S. Appl. No. 12/300,528, filed Nov. 12, 2008, Nishi, et al.
Iwasa Mitsuyoshi
Nishi Yasuhisa
Cain Edward J
Denki Kagaku Kogyo Kabushiki Kaisha
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Ceramic powder and applications thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceramic powder and applications thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic powder and applications thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4281076