Number | Date | Country | Kind |
---|---|---|---|
9-087060 | Apr 1997 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3853754 | Gosser | Dec 1974 | |
3947402 | Vollkommer et al. | Mar 1976 | |
4297362 | Losher et al. | Oct 1981 | |
4717394 | Hayes | Jan 1988 | |
5470943 | Sakata et al. | Nov 1995 | |
5473040 | Kunimune et al. | Dec 1995 | |
5614099 | Hirose et al. | Mar 1997 | |
5665802 | Maki et al. | Sep 1997 | |
5674398 | Hirose et al. | Oct 1997 | |
5702503 | Tse Tang | Dec 1997 | |
5817165 | Hachisuka et al. | Oct 1998 | |
5821320 | Maeda et al. | Oct 1998 |
Number | Date | Country |
---|---|---|
0156495 | Oct 1985 | EPX |
Entry |
---|
1990, month not available, H. Yamamoto et al. "Structure/Permeability Relationships of Polyimide Membranes. II", Journal of Polymer Science: Part B: Polymer Physics, vol. 28, pp. 2291-2304. |