Number | Name | Date | Kind |
---|---|---|---|
3637595 | Cottis et al. | Jan 1972 | |
4075173 | Maruyama et al. | Feb 1978 | |
4189549 | Matsunaga et al. | Feb 1980 | |
4311823 | Imai et al. | Jan 1982 | |
5023314 | Gupta et al. | Jun 1991 | |
5109101 | Gupta et al. | Apr 1992 |
Number | Date | Country |
---|---|---|
61-157527 | Jul 1986 | JPX |
Entry |
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British Polymer Journal, 12, pp. 154-162, Dec., 1980, by J. W. Jackson, Jr. |