Number | Date | Country | Kind |
---|---|---|---|
3-186306 | Jul 1991 | JPX | |
3-194166 | Aug 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4582771 | Ohta | May 1986 | |
4663442 | Ohta | May 1987 | |
4743523 | Yamashita et al. | May 1988 | |
4868080 | Umehara et al. | Sep 1989 |
Number | Date | Country |
---|---|---|
62-118353 | May 1987 | JPX |
Entry |
---|
Ota, Chemical Abstracts, 108:46819a (1988). |