Learn more

SMITH DERRICK A

Overview
  • Total Patents
    12
About

SMITH DERRICK A has a total of 12 patent applications. Its first patent ever was published in 1977. It filed its patents most often in Canada and United States. Its main competitors in its focus markets environmental technology, engines, pumps and turbines and thermal processes are DAINIPPON INK RIKAGAKU KENKUYS, DALIAN SUN LEADER HEAT TRANSFER TECHNOLOGY CO LTD and NAGAO SHIYOUJIROU.

Patent filings in countries

World map showing SMITH DERRICK As patent filings in countries
# Country Total Patents
#1 Canada 6
#2 United States 6

Patent filings per year

Chart showing SMITH DERRICK As patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Smith Derrick A 12

Latest patents

Publication Filing date Title
US4397152A Solar furnace
US4394860A Solar light bulb
US4253307A Solar power generator and water purifier
US4253312A Apparatus for the recovery of useful heat from refrigeration gases
US4257173A No-heat clothes dryer
US4391100A Closed loop hermetically sealed solar power generator
CA1071397A No-heat clothes dryer
CA1078629A Closed loop hermetically sealed solar power generator
CA1072752A Solar power generator and water purifier
CA1068917A Apparatus for the recovery of useful heat from refrigeration gases