997Dec 11, 2001Ricoh Company, Ltd.Memory including a data structure used for identifying a communication protocol of a received communicationUS6421608Jul 12, 2000Jul 16, 2002Ricoh Company LimitedMethod and system of remote position reporting deviceUS6421678Oct 20, 1999Jul 16, 2002Actioneer, Inc.Method and apparatus for group action processing between users of a collaboration systemUS6430711 *Jan 6