Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 18, 2007
0Patent Application Number
104159060
Date Filed
November 7, 2000
0Patent Primary Examiner
Patent abstract
Episulfide compounds useful as starting materials of optical materials are stably stored for a long period of time at a temperature ranging from their solidifying points to 20° C., preventing the production or precipitation of polymers and the yellowing.
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