Number | Date | Country | Kind |
---|---|---|---|
2-020988 | Jan 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4528329 | Inoue et al. | Jul 1985 | |
4962157 | Taubitz et al. | Oct 1990 |
Number | Date | Country |
---|---|---|
0180302 | May 1986 | EPX |
0317358 | May 1989 | EPX |
0337214 | Oct 1989 | EPX |
Entry |
---|
Patent Abstracts of Japan, vol. 13, No. 179 (C-590)[3527], Apr. 26, 1989; & JP-A-01 009 254 (Nippon Petrochem) Dec. 1, 1989. |