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HOWARD HENRY

Overview
  • Total Patents
    57
About

HOWARD HENRY has a total of 57 patent applications. Its first patent ever was published in 1892. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets materials and metallurgy, chemical engineering and organic fine chemistry are SOLVAY PROCESS CO, ZIEREN CHEMIEBAU GMBH DR A and WEST END CHEMICAL COMPANY.

Patent filings in countries

World map showing HOWARD HENRYs patent filings in countries
# Country Total Patents
#1 United States 35
#2 Canada 8
#3 United Kingdom 7
#4 Switzerland 3
#5 Spain 3
#6 Austria 1

Patent filings per year

Chart showing HOWARD HENRYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Howard Henry 52
#2 Stantial Frank G 1
#3 Alexander Thomson H 1
#4 Harrison Campbell Grove 1

Latest patents

Publication Filing date Title
GB0302009D0 Easy-lift
US1271899A Method of recovering sulfur dioxid from furnace-gases.
US1245343A Process of making phenols.
US1173428A Process and apparatus for calcining chemical products.
US1265333A Liquid-feeding apparatus.
US1151103A Process of making sulfuric acid.
US1145898A Process of making hydrochloric acid.
US1145897A Apparatus for making hydrochloric acid.
US1175147A Bauxite-digester.
US1090064A Drafting and plotting instrument.
GB191319730A Rust-inhibiting Paints.
US1138658A Process of drying sodium-bisulfite crystals.
US1137860A Process of treating aluminate solutions.
US1104897A Process of making bisulfite of soda.
US1164649A Process of making carbon dioxid and solid sodium sulfite.
US1084884A Paint.
US1084436A Process of making solid sodium bisulfite.
US1099177A Stable crystalline sodium bisulfite and process of producing same.
US1071234A Dust-separator.
US1051410A Acid-pump.