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|Title:||Platinum compound and process of preparing same|
|Abstract:||Disclosed herein are a platinum compound employed as raw material of medicines having carcinostatic effects, and a process of preparing the platinum compound. The platinum compound (I) substantially free from impurities can be prepared through a reaction between the corresponding dihalogen compound and an organic dibasic acid employing an iodine compound utilizing the difference of solubilities between the desired compound and the iodine compounds.|
|Inventor(s):||Okamoto; Koji (Kanagawa, JP), Hoshi; Yuko (Kanagawa, JP), Nakanishi; Chihiro (Kanagawa, JP)|
|Assignee:||Tanaka Kikinzoku Kogyo K.K. (JP)|
Patent Claim Types:|
see list of patent claims
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|Japan||4-23219||Jan 13, 1992|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Germany||69331046||<disabled in preview>|
|European Patent Office||0617043||<disabled in preview>|
|Spain||2166760||<disabled in preview>|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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