Appeal 2007-1524
Application 09/770,725
1 Applicants state that they have invented “a lithium secondary battery
2 in which deterioration of battery properties attributed to water released from
3 both of a positive electrode and negative electrode and existing in the non-
4 aqueous electrolytic solution packed in the battery its [sic] suppressed.”
5 (Original Specification 1:5-10).
6 Representative claim 1 reads as follows:
7 1. A lithium secondary battery comprising:
8 an electrode unit produced by winding or laminating a
9 positive electrode and a negative electrode via a separator, said
10 positive electrode comprising positive electrode active
11 substance comprising lithium manganese oxide, said negative
12 electrode comprising negative electrode active substance
13 comprising at least one material selected from the group
14 consisting of amorphous carbonaceous material and graphitized
15 carbonaceous material, and
16 a non-aqueous electrolytic solution containing a lithium
17 compound as an electrolyte, wherein a cumulative
18 concentration of water (H2O) released from both of said
19 positive electrode and said negative electrode in relation to the
20 weight of said electrode unit, exclusive of weight of current
21 collectors, is suppressed to 5,000 ppm or lower in case of
22 heating both electrodes at 25 to 200°C and to 1,500 ppm or
23 lower in case of heating said electrodes at 200 to 300°C.
24
25 The Examiner rejected claims 1-17 under 35 U.S.C. § 103(a).
26 (Substitute Answer entered August 22, 2006, hereafter “Answer” 3-5.)
27 The prior art relied upon by the Examiner in rejecting the claims on
28 appeal is:
29 Watanabe US 6,083,644 B1 Jul. 4, 2000
30
31 Takami US 6,350,544 B1 Feb. 26, 2002
32
33 Kurose US 6,361,822 B1 Mar. 26, 2002
34
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