Appeal No. 95-4453
Application 07/885,419
23, which are all of the claims pending in the application.
For purposes of this appeal, we will limit our discussion to the broadest claim on appeal, claim
15, since appellants state at page 3 of the Brief that “[t]he pending claims stand or fall together as a
group.” See 37 CFR § 1.192(c)(5)(1993). Claim 15 is reproduced below:
15. A method of coating silicone rubber particles with metal oxide particles comprising the
steps of:
forming a water-based dispersion of silicone rubber particles;
adding to said dispersion a water-based metal oxide sol; and
removing the water from the above mixture by spray-drying.
The references of record relied upon by the examiner are : 2
Willing 4,248,751 Feb. 3, 1981
Shimizu et al. (Shimizu) 4,911,974 Mar. 27, 1990
Oniwa et al (Oniwa), Japanese Kokai Patent Application 62-257939, “Method for Preparing Silicone
Elastomer Spherical Fine Powders,” Nov. 10, 1987.
Ikeda et al. (Ikeda), Japanese Kokai Patent Application 64-306471 (HEI 1[1989]-306471), “A
Method for Producing Silicone Resin Microparticle,” Dec. 11, 1989.
2Our reference to the Japanese Kokai patent applications is to their corresponding English
translations of record.
2
Page: Previous 1 2 3 4 5 Next
Last modified: November 3, 2007