Prufrex-Elektro-Apparatebau, Inh. Helga Muller, Geb. Dutschke
Patent Owner
Stats
- 7 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Apr 03, 2012 most recent publication
Details
- 7 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 100 Total Citation Count
- Apr 26, 1990 Earliest Filing
- 4 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
8150606 Ignition system, easy to start for internal combustion enginesSep 29, 08Apr 03, 12[G06F, F02P, G06G]
6761148 Electronic rotation speed-dependent control and/or diagnosis process for combustion enginesAug 29, 02Jul 13, 04[F02P]
6701896 Microelectronic ignition method and ignition module with ignition spark burn-time prolonging for an internal combustion engineAug 02, 02Mar 09, 04[F02P]
6691689 Rotation direction detector in ignition equipment of an internal combustion engineOct 12, 01Feb 17, 04[F02P]
5138995 Ignition process, arrangement and apparatus for internal combustion engines with a magnetoJun 05, 91Aug 18, 92[F02P]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6478010 Ignition module with rotational speed limitation for an internal combustion engineExpiredJul 16, 01Nov 12, 02[F02P]
5069193 Ignition process, arangement and apparatus for internal combustion engines with a magnetoExpiredJul 19, 90Dec 03, 91[F02P]
5046468 Method and system with inductive rotary emitter for the control especially of the ignition timing of internal combustion enginesExpiredJul 27, 90Sep 10, 91[F02P]
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