Appeal No. 1998-3320
Application 08/417,017
pigment partially coated by reaction with an organic modifying
agent in an amount such that the powder electrical conductance
of the surface-modified pigment is 80% or less of the powder
electrical conductance of the uncoated conductive pigment but
not less than 10 S.-7 [1]
13. The pigment prepared by:
mixing a conductive pigment with an organic modifying
agent, optionally mixed with a solvent, removing the volatile
reaction products and any solvent, agitating and heating to
about 100EC or more, and drying the resulting surface-modified
pigment partially coated by the organic modifying agent.
THE REFERENCES
Tsunaga et al. (Tsunaga) 4,888,135 Dec. 19,
1989
Maeda et al. (Maeda) 5,185,228 Feb. 9,
1993
Baigrie et al. (Baigrie) 5,382,384 Jan. 17,
1995
Sato et al. (EP ‘557) 0 139 557 May 2,
1985
(European patent application)
THE REJECTIONS
The claims stand rejected under 35 U.S.C. § 103 as
follows: claims 1-13 over Tsunaga in view of EP ‘557 and
Maeda, and claims 14-20 over these references further in view
of Baigrie.
“S” stands for “siemens” which is reciprocal ohms (specification, page 3, lines 17).1
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007