Number | Date | Country | Kind |
---|---|---|---|
227828 | Sep 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2993033 | O'Brien | Jul 1961 | |
4123279 | Kobayashi | Oct 1978 | |
4384037 | Hosaka et al. | May 1983 | |
4511645 | Koike et al. | Apr 1985 | |
4797345 | Jeffries, III | Jan 1989 | |
4806450 | Hofmann et al. | Feb 1989 | |
4925768 | Iwasaki et al. | May 1990 | |
4946757 | Seio et al. | Aug 1990 |
Entry |
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Japanese Abstract 82-16373E/09 (Hitachi Chemical KK). |
Japanese Abstract 82-010668 (Hitachi Chem. Co. Ltd). |