Appeal No. 2000-0110
Application 08/818,447
1. A method of producing acid water and alkaline water,
which comprises providing a water electrolytic cell which is
partitioned by a cation-exchange membrane into an anode chamber
and a cathode chamber, supplying an aqueous sodium chloride
solution having a pH of about 3 to 4 to the anode chamber,
supplying water to the cathode chamber, conducting electrolysis,
and simultaneously recovering acid water having an oxidation
reduction potential of 1,000 mV or higher and a pH of about 3 to
4 from the anode chamber and weak alkaline water having an
oxidation reduction potential of 200 mV or less and a pH of from
7 to 9.5 from the cathode chamber.
THE REFERENCES
Themy et al. (Themy) 3,616,355 Oct. 26, 1971
Okazaki 4,867,856 Sep. 19, 1989
Shiramizu et al. (Shiramizu) 5,543,030 Aug. 6, 1996
Okasaki et al. (JP ‘478)1 5-237478 Sep. 17, 1993
(Japanese patent application)
THE REJECTIONS
The claims stand rejected under 35 U.S.C. § 103 as follows:
claims 1-3, 5-7, 10, 13, 14, 16, 17 and 19 over Shiramizu in view
of Themy or JP ‘478, and claims 12 and 15 over these references
further in view of Okazaki.
OPINION
We reverse the aforementioned rejections.
Shiramizu discloses an electrolysis method for producing
water, particularly water used for wet treatment of semiconductor
1 Citations herein to JP ‘478 are to an English translation thereof, a copy of which is
provided to the appellants with this decision.
2
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