Appeal No. 1996-3787
Application No. 07/607,870
February 9, 1995. See Paper No. 25.
Claim 41 is representative of the subject matter on
appeal and reads as follows:
41. A magneto-optical recording medium comprising a
substrate and a multilayer magnetic film, wherein said
multilayer magnetic film includes at least a recording
layer and a supporting layer, and wherein said multilayer
magnetic film exhibits a magneto-optical effect on
reflected light of a laser beam irradiating the recording
medium, characterized in that the recording layer has a
higher Curie temperature than has the supporting layer and
the recording layer has a greater coercive force than has
the supporting layer at room temperature, the recording
layer has a thickness of
10-50 nm, and the multilayer magnetic film has a
thickness of 20-100 nm, the recording medium having
properties that it can be overwritten, and read-out for
verification can be performed immediately after
overwriting, and wherein the recording medium further
comprises a metal reflecting layer on the multilayer
magnetic film.
As evidence of obviousness, the examiner relies on the
following prior art:
Katayama et al. (Katayama) 4,645,722 Feb. 24,
1987
Osato et al. (Osato) 4,664,977 May 12,
19871
1Although the examiner lists published European Patent
Application 0 258 978 to Osato et al. as "Prior Art of Record"
on pages 2-3 in the Answer, the examiner relies on Osato ‘977
(U.S. Patent No. 4,664,977) in the statement and body of
rejection set forth in the final Office action dated February
2
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