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WASHBURN FRANK S

Overview
  • Total Patents
    35
About

WASHBURN FRANK S has a total of 35 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United States and Canada. Its main competitors in its focus markets materials and metallurgy, basic materials chemistry and chemical engineering are PRAYON TECH, PHOSPHATES TUNISIENS SOC D and EDMOND VOITURON.

Patent filings in countries

World map showing WASHBURN FRANK Ss patent filings in countries
# Country Total Patents
#1 United States 19
#2 Canada 16

Patent filings per year

Chart showing WASHBURN FRANK Ss patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Washburn Frank S 34
#2 Landis Walter S 1

Latest patents

Publication Filing date Title
US1607326A Process of prducing thiourea
CA173159A Ammonium nitrate, etc.
CA173158A Nitric acid, etc.
CA173157A Nitric acid, etc.
US1217247A Process of making ammonium nitrate and other products.
US1206063A Process of making nitric acid and other products.
US1206062A Process of making nitric acid and other products.
CA168111A Ammomium phosphate production
CA168112A Fertilizer
CA168256A Ammonium phosphate production
CA168257A Mono-ammonium phosphate
CA165846A Fertilizer production
US1151633A Fertilizer material and process of producing the same.
CA162803A Fertilizer
US1151074A Apparatus for making ammonium phosphate.
CA164857A Production of nitrose gases
US1135639A Fertilizer containing lime nitrogen and tankage material.
CA165845A Fertilizer
US1142068A Process of making mono-ammonium phosphate.
CA162802A Fertilizer