Number | Date | Country | Kind |
---|---|---|---|
3044109 | Nov 1980 | DEX |
The subject application is a division of application Ser. No. 315,856 which was filed on Oct. 28, 1981 now abandoned.
Number | Name | Date | Kind |
---|---|---|---|
2274449 | John et al. | Feb 1942 | |
3947473 | Scott et al. | Mar 1976 | |
4097495 | Chan et al. | Jun 1978 | |
4113740 | Cohen et al. | Sep 1978 | |
4127608 | Olson et al. | Nov 1978 | |
4179447 | Connor et al. | Dec 1979 | |
4280011 | De Simone | Jul 1981 |
Number | Date | Country |
---|---|---|
1506076 | Apr 1978 | GBX |
Entry |
---|
G. P. Ellis, "Chromenes, Chromanones and Chromones", John Wiley & Sons, New York, N.Y. 1977, pp. 70-71, 157-159, 182-184, 301-307 and 331. |
McOmie, Advances in Organic Chemistry, vol. 3, Interscience Publishers, New York, N.Y. 1963, pp. 216-219, 230-231, 262-265. |
Mayer et al., Helv. Chim. Acta, 46, 650 (1963). |
Number | Date | Country | |
---|---|---|---|
Parent | 315856 | Oct 1981 |