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HNU SYST INC

Overview
  • Total Patents
    21
About

HNU SYST INC has a total of 21 patent applications. Its first patent ever was published in 1974. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets measurement, electrical machinery and energy and machines are FINNIGAN MAT GMBH, VESTEC CORP and AKASHI SEISAKUSHO KK.

Patent filings in countries

World map showing HNU SYST INCs patent filings in countries

Patent filings per year

Chart showing HNU SYST INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Driscoll John N 17
#2 Atwood Edwards S 8
#3 Spaziani Frederick F 3
#4 Jiyon Enu Dorisukooru 1
#5 Furederitsuku Efu Supatsujiani 1

Latest patents

Publication Filing date Title
US4842697A Method of determining ammonia in a gaseous or liquid sample
US4846937A Method of detecting carbon dioxide in a gaseous or liquid sample
US4849058A Method of detecting nitrogen oxides in gaseous or liquid samples
CA1281063C Gas discharge lamp with built-in resistance to color center formation in ultraviolet-transmissive window
US4801841A Gas discharge lamp with built-in resistance to color center formation in ultraviolet-transmissive window
US4780185A Method of determining H2 S
US4756804A Method of detecting hydrogen cyanide gas in a gaseous or liquid sample
US4659434A Gas sensor
CA1275301C Photodiode
US4549953A Ion-selective electrodes
EP0126452A2 Electrochemical cell
US4013913A Ion detection electrode arrangement
US3933432A Photoionization