Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
J. Hans Richter0
Matthew E. Thompson0
George G. Ruth0
Date of Patent
December 19, 2006
0Patent Application Number
111115760
Date Filed
April 21, 2005
0Patent Primary Examiner
Patent abstract
The apparatus is a contamination free stamper holder for molding discs for information storage. The stamper, the disc part of the mold holding the pits and grooves to be formed on the molded plastic, is held within the mold by one or more magnets that are completely enclosed within non-magnetic material. The wall thickness of the enclosing material between the magnets and the stamper is limited so that there is no significant loss in magnetic attraction.
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