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WILLIAM H JOHNSTON LAB INC

Overview
  • Total Patents
    11
About

WILLIAM H JOHNSTON LAB INC has a total of 11 patent applications. Its first patent ever was published in 1958. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets electrical machinery and energy, biotechnology and measurement are IONICON ANALYTIK GES M B H, TRUWEAL INC and SANG IL SYSTEM CO LTD.

Patent filings in countries

World map showing WILLIAM H JOHNSTON LAB INCs patent filings in countries
# Country Total Patents
#1 United States 6
#2 Germany 2
#3 United Kingdom 2
#4 Sweden 1

Patent filings per year

Chart showing WILLIAM H JOHNSTON LAB INCs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Vestal Marvin L 5
#2 Johnston William H 2
#3 Waters J R 1
#4 L Vestal Martin 1
#5 Rosenstock Henry M 1
#6 Wahrhaftig Austin L 1
#7 Vestal Marvin Leon 1
#8 Manfred Krause 1

Latest patents

Publication Filing date Title
GB1222049A Method and apparatus for detecting bacterial presence
DE1274248B Device for multi-stage electron multiplication
GB1072276A Improvements in and relating to electron multipliers
US3265916A Focused mesh electron multiplier
US3307033A Coincidence mass spectrometer with electrostatic means to separate positive and negative ions and detectors and method of use
US3255352A Radioactive method of detection of hidden explosives
US3163752A Ion acceleration apparatus for coincidence time-of-flight mass specrometers
US3151269A Source of ionizing beam
US2999157A Method and apparatus for ionization investigation