Number | Date | Country | Kind |
---|---|---|---|
3-19403 | Jan 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
5026506 | Koden et al. | Jun 1991 | |
5084302 | Inoue et al. | Jan 1992 | |
5151214 | Koden et al. | Sep 1992 |
Number | Date | Country |
---|---|---|
0388141 | Sep 1990 | EPX |
0442504 | Aug 1991 | EPX |
3-52882 | Mar 1991 | JPX |
Entry |
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Abstract from Derwent Patent Index, Japanese Patent Publication JP-A-052 882, Mar. 7, 1991. |
European Search Report, dated Aug. 4, 1992, in which Ref. BC, BD and CA were cited. |
CA 101(13):110704u, 1984. |