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GRATZMULLER JEAN LOUIS

Overview
  • Total Patents
    406
About

GRATZMULLER JEAN LOUIS has a total of 406 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United Kingdom, Germany and Switzerland. Its main competitors in its focus markets mechanical elements, electrical machinery and energy and engines, pumps and turbines are GRATZMULLER J, GRATZMULLER and GRATZMULLER CLAUDE.

Patent filings in countries

World map showing GRATZMULLER JEAN LOUISs patent filings in countries

Patent filings per year

Chart showing GRATZMULLER JEAN LOUISs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gratzmuller Jean Louis 147
#2 Jean Louis Gratzmuller 45
#3 Louis Gratzmuller Jean 21
#4 Jean-Louis Gratzmuller 8
#5 Jiyan Rui Guratsutsumiyuraa 3
#6 Gratzmueller Jean Louis 2
#7 Gratzmuller J L 2
#8 Ignace Lionel 1
#9 Ignace Lionel Rene 1
#10 Gratzmuller Jean-Louis 1

Latest patents

Publication Filing date Title
EP0003925A1 Hydropneumatic piston accumulator provided with a gas shortage detector
DE2242696A1 DEVICE FOR SWITCHING OFF DIRECT CURRENT HIGH VOLTAGE
FR2097319A5 Reducing valve - with ptfe bushing for piston
GB1285282A A method of, and apparatus for, interrupting a d.c. power transmission line
GB1249936A Pump-motor set
GB1213220A A lubricating circuit for a heat engine
GB1205864A Apparatus for the supply of dry compressed air to a device or devices for utilising said air
GB1208796A Improvements made in pressure relief valves with a diaphragm
GB1167385A Safety Arrangement for Containers for Dangerous Gases
GB1169459A Improvements in, or relating to Electrical Circuit Breakers.
US3513341A Permanent magnet rotor for an electric machine
ES337948A1 Improvements introduced in the refrigeration devices of enabled internal combustión engines (Machine-translation by Google Translate, not legally binding)
DE1576718A1 Method and device for cooling pre-compressed internal combustion engines
GB1179472A Improvements in or relating to Supercharged Internal Combustion Engines
GB1169961A A Traction Drive and Transmission Assembly comprising a Heat Engine and an Electric Transmission
DE1596123B1 SAFETY LATCH FOR ACCUMULATORS
GB1106264A Hydraulically-operated valve and centrally-controlled plant allowing remote control of a number of such valves
ES322039A1 Improvements in the electric switches. (Machine-translation by Google Translate, not legally binding)
GB1104228A Improvements in or relating to electric circuit breakers
GB1092406A Evacuating valve assembly for a hydraulic jack