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2-15747 | Jan 1990 | JPX |
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3247199 | Marxer | Feb 1966 | |
4681928 | Berger et al. | Jul 1987 | |
4748228 | Shoji et al. | May 1988 | |
4914182 | Pfeifer et al. | Apr 1990 | |
4959437 | Kunimune et al. | Sep 1990 | |
5026823 | Summers et al. | Jun 1991 | |
5053544 | Murata et al. | Oct 1991 |
Number | Date | Country |
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0389092 | Feb 1990 | EPX |
Entry |
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Korshak et al "Cardo Polymer", Reviews in Macromolecular Chemistry, 12, 1974/1975 pp. 100 to 129. |