Appeal No. 1996-1974 Application No. 07/930,738 With regard to the thickness of the polymer coating, we agree with the examiner that the choice of a suitable thickness (which we presume to be a function of the coating weight relative to the weight of the carbon black particles) would have been an obvious matter of routine optimization absent a showing of any 6Page: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007