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JOHNSON SERVICE CO

Overview
  • Total Patents
    1,190
About

JOHNSON SERVICE CO has a total of 1,190 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets control, machines and measurement are HONEYWELL REGULATOR CO, POWERS REGULATOR CO and GRANT WILLIE T.

Patent filings per year

Chart showing JOHNSON SERVICE COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Otto Carl A 45
#2 Thoma Paul E 43
#3 Drees Kirk H 26
#4 Hilgert Adolph J 25
#5 Jamieson J Scott 23
#6 Otto Arthur J 22
#7 Rasmussen David E 21
#8 Janu George J 21
#9 Woest Karen L 20
#10 Stark James K 20

Latest patents

Publication Filing date Title
EP0892330A1 Environmental control system and method
JPH11224101A Feedback controller
US6028998A Application framework for constructing building automation systems
US5862982A Optimal ventilation control strategy
US5769315A Pressure dependent variable air volume control strategy
US5875109A Adaptive flow controller for use with a flow control system
AU3504997A Zoning interface system for a variable speed heat pump
US5970997A Smart actuator control
US5988319A Transmission for a return-to-normal actuator
US5820262A Smart refrigerant sensor
US5887849A Thermal release apparatus for coupling a damper actuator to a damper blade assembly
US5754767A Method for automatically determining the physical location of devices on a bus networked control system
US5852333A Electric actuator return-to-normal using capacitor energy storage with regulated output
US5758684A Return-to-normal modular actuator
US5676343A High pressure water regulating valve
US5786525A Method and apparatus for balancing an air distribution system
US5769314A Variable air volume HVAC system controller and method
US5791408A Air handling unit including control system that prevents outside air from entering the unit through an exhaust air damper
DE19536607A1 Burner adjuster with valve seat for heating systems etc
DE19530377A1 Electric reversing drive for control valves