ROLM SYSTEMS
Patent Owner
Stats
- 2 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jan 04, 1994 most recent publication
Details
- 2 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,409 Total Citation Count
- Jan 16, 1978 Earliest Filing
- 38 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5144287 Current level sensing circuit for use with gyrator circuitryExpiredDec 28, 90Sep 01, 92[G08B]
5070439 DC to DC converter apparatus employing push-pull oscillatorsExpiredMar 12, 91Dec 03, 91[H02M]
5031124 Method for selecting computer storage devices for computer applicationsExpiredMar 13, 90Jul 09, 91[G06F]
5017915 Method of enhancing communication setup between a communication station and a telecommunications networkExpiredSep 19, 88May 21, 91[H04Q]
4956806 Method and apparatus for editing source files of differing data formats using an edit tracking fileExpiredJul 12, 88Sep 11, 90[G06F]
4881230 Expert system for processing errors in a multiplex communications systemExpiredOct 05, 87Nov 14, 89[H04B, G06F]
4873687 Failing resource manager in a multiplex communication systemExpiredOct 05, 87Oct 10, 89[H04B, G06F]
4817092 Threshold alarms for processing errors in a multiplex communications systemExpiredOct 05, 87Mar 28, 89[H04B]
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