Number | Name | Date | Kind |
---|---|---|---|
3386952 | Bath et al. | Jun 1968 | |
3642868 | Dexter et al. | Feb 1972 | |
3644482 | Dexter et al. | Feb 1972 | |
3676393 | Piirma | Jul 1972 | |
3681431 | Dexter et al. | Aug 1972 | |
3821169 | Duddey | Jun 1974 | |
3985705 | Georgoudis | Oct 1976 | |
3987004 | Georgoudis | Oct 1976 | |
4056356 | Gilkey et al. | Nov 1977 | |
4101326 | Barkey | Jul 1978 | |
4200731 | Massey et al. | Apr 1980 | |
4330462 | Keck et al. | May 1982 | |
4434276 | Horlbeck et al. | Feb 1984 | |
4548975 | Lewis | Oct 1985 | |
4910286 | White et al. | Mar 1990 | |
5138024 | Brozek et al. | Aug 1992 |
Number | Date | Country |
---|---|---|
1351247 | Apr 1974 | GB |
Entry |
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Weingart, F. et al., “Titanium catalyst in the manufacture of polyethylene terephthalate”, Chemical Fibers International (CFI), vol. 46, Apr. 1996. |