Number | Name | Date | Kind |
---|---|---|---|
2318429 | Smith | May 1943 | |
2407107 | Smith | Sep 1946 | |
2773050 | Caldwell et al. | Dec 1956 | |
4670505 | Craig | Jun 1987 | |
5231145 | Brueckmann et al. | Jul 1993 | |
5240771 | Brueckmann et al. | Aug 1993 | |
5326809 | Bott et al. | Jul 1994 | |
5354803 | Dragner et al. | Oct 1994 | |
5364904 | Farnmer et al. | Nov 1994 |
Number | Date | Country |
---|---|---|
0185607 | Jul 1992 | EPX |
0538571 | Aug 1992 | EPX |
0718314 | Jun 1996 | EPX |
0723975 | Jul 1996 | EPX |
0185606 | Jul 1992 | JPX |
7130914 | Oct 1996 | JPX |
1438449 | Jun 1976 | GBX |
Entry |
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Farmer, D.B., in "Polyvinyl Alcohol-Developments", C. A. Finch ed. John Wiley & Sons, New York, NY p. 459 1992. |