Number | Date | Country | Kind |
---|---|---|---|
90 04916 | Apr 1990 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4330649 | Kioka et al. | May 1982 | |
4330650 | Sakurai et al. | May 1982 | |
4410671 | Welch et al. | Oct 1983 | |
4594367 | Geissel et al. | Jun 1986 | |
4920167 | Ruetman et al. | Apr 1990 | |
5165998 | Bailly et al. | Nov 1992 |
Entry |
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I. Foygt, Stabilization of Synthetic Polymers Against the Effect of Light and Heat, Leningrad, "Khimiya" Publishers, 1972, pp. 338-339, Exhibit 2 & 3, original Russian with English translation. |