Number | Name | Date | Kind |
---|---|---|---|
2323503 | Wilson | Jul 1943 | |
2339094 | Middleton | Jan 1944 | |
4115122 | Adachi et al. | Sep 1978 | |
4239284 | Detty et al. | May 1982 | |
4272614 | Mifune et al. | Jun 1981 | |
4365016 | Detty et al. | Dec 1982 | |
4365017 | Detty et al. | Dec 1982 | |
4451557 | Lok et al. | May 1984 | |
4471044 | Parton et al. | Sep 1984 |
Number | Date | Country |
---|---|---|
136420 | Nov 1976 | JPX |
Entry |
---|
"Un Nouvel Heterocycle Tellure: le Benzisotellurazole-1,2", Campsteyn et al., Journal of Heterocyclic Chemistry, vol. 15, Aug. 1978, pp. 745-748. |
U.S. Ser. No. 660,155, filed Oct. 12, 1984, commonly assigned, entitled Photographically Useful Chalcogenazoles, Chalcogenazolines, and Chalcogenazolinium and Chalcogenazolium Salts. |