Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2005-02-15
2005-02-15
Ruddock, Ula (Department: 1771)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C442S120000, C442S179000
Reexamination Certificate
active
06855398
ABSTRACT:
An object of the present invention is, by utilizing carbon fibers as its constituent material, to provide a thermal-acoustic insulation material having excellent properties in durability, compression resilience, lightness, fireproofness, and non-galvanic corrosiveness. The material of the present invention comprises a wool-like carbon fiber aggregate composed of carbon fibers having an average fiber diameter of 0.5 μm to 5 μm and an average fiber length of 1 mm to 15 mm and the contact points of the fibers are bonded together by a thermosetting resin. The galvanic current of the material is 10 μA or lower in a galvanic cell comprising an electrode composed of the thermal-acoustic insulation material, the other electrode composed of an aluminum plate, and an electrolytic solution composed of 0.45 wt. % sodium chloride aqueous solution.
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Date Toshio
Higo Tsuyoshi
Kataoka Toshinobu
Machino Fumikazu
Onoue Ryoichi
Armstrong Kratz Quintos Hanson & Brooks, LLP
Osaka Gas Co. Ltd.
Ruddock Ula
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