Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-03-21
2008-10-21
Harlan, Robert D. (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S492000, C523S513000, C423S335000, C423S337000, C423S355000
Reexamination Certificate
active
07439298
ABSTRACT:
Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 150±15 m2/g, wherein the aggregates display an average surface area of 12000 to 20000 nm2, an average equivalent circle diameter (ECD) of 90 to 120 nm and an average circumference of 1150 to 1700 nm. It is produced by a pyrogenic process in which silicon tetrachloride and a second silicon component comprising H3SiCl, H2SiCl2, HSiCl3, CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and/or (n-C3H7)SiCl3are mixed with primary air and a combustion gas and burnt into a reaction chamber, secondary air also being introduced into the reaction chamber, and the feed materials being chosen such that an adiabatic flame temperature of 1670 to 1730° C. is obtained. Silicone sealing compound containing the pyrogenically produced silicon dioxide powder.
REFERENCES:
patent: 6593270 (2003-07-01), Krause et al.
patent: 2004/0253164 (2004-12-01), Mangold et al.
patent: 2006/0154994 (2006-07-01), Schumacher et al.
patent: 2008/0045411 (2008-02-01), Morters et al.
patent: 102 58 858 (2004-08-01), None
patent: 1 486 461 (2004-12-01), None
patent: WO 2005/054928 (2005-06-01), None
patent: WO 2005/095503 (2005-10-01), None
U.S. Appl. No. 11/055,605, filed Feb. 11, 2005, Schumacher, et al.
U.S. Appl. No. 10/524,037, filed Feb. 9, 2005, Schumacher, et al.
U.S. Appl. No. 11/084,022, filed Mar. 21, 2005, Schumacher, et al.
U.S. Appl. No. 11/084,022, filed Mar. 21, 2005, Schumacher, et al.
U.S. Appl. No. 11/084,170, filed Mar. 21, 2005, Schumacher, et al.
U.S. Appl. No. 11/085,151, filed Mar. 22, 2005, Schumacher, et al.
U.S. Appl. No. 10/530,284, filed Apr. 5, 2005, Moerters, et al.
U.S. Appl. No. 10/530,491, filed Apr. 6, 2005, Moerters, et al.
U.S. Appl. No. 10/549,929, filed Sep. 20, 2005, Schumacher, et al.
Diener Uwe
Kerner Dieter
Scholz Mario
Schumacher Kai
Degussa - AG
Harlan Robert D.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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