Number | Name | Date | Kind |
---|---|---|---|
3971840 | Economy et al. | Jul 1976 | |
4052430 | Yajima et al. | Oct 1977 | |
4100233 | Yajima et al. | Jul 1978 | |
4220600 | Yajima et al. | Sep 1980 | |
4248814 | Yajima et al. | Feb 1981 | |
4283376 | Yajima et al. | Aug 1981 | |
4342712 | Yajima et al. | Aug 1982 | |
4347347 | Yajima et al. | Aug 1982 | |
4359559 | Yajima et al. | Nov 1982 | |
4604367 | Takamizawa et al. | Aug 1986 | |
4657991 | Takamizawa et al. | Apr 1987 | |
4847027 | Lu | Jul 1989 |
Number | Date | Country |
---|---|---|
5977320 | Oct 1980 | JPX |
Entry |
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Mah et al., J. Mat. Sci., 19, 1191-1201 (1984). |