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ROESSLER & HASSLACHER CHEMICAL

Overview
  • Total Patents
    271
About

ROESSLER & HASSLACHER CHEMICAL has a total of 271 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets materials and metallurgy, organic fine chemistry and chemical engineering are SOLVAY PROCESS CO, KNAPSACK AG and ONSAGER OLAV T.

Patent filings in countries

World map showing ROESSLER & HASSLACHER CHEMICALs patent filings in countries
# Country Total Patents
#1 United States 210
#2 United Kingdom 26
#3 Germany 13
#4 France 10
#5 Austria 8
#6 Switzerland 4

Patent filings per year

Chart showing ROESSLER & HASSLACHER CHEMICALs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liebknecht Otto 27
#2 Foersterling Hans 17
#3 Stafford Whitby George 9
#4 Philipp Herbert 9
#5 Johnson Carlisle Paul 7
#6 Lacy Burritt S 7
#7 Otto Liebknecht 7
#8 Schaidhauf Alois 7
#9 Hans Lehrecke 6
#10 Anders Hanns R 6

Latest patents

Publication Filing date Title
GB414092A Improvements in or relating to the case hardening of iron, steel and alloy steels
GB409361A Improvements in or relating to the stabilisation of aqueous solutions containing hydrogen peroxide
GB406339A Improvements in or relating to the separation of solid impurities from molten metals
GB406346A Improvements in or relating to the case hardening of iron, steel and alloy steels
GB406033A Improvements in or relating to black finishing metal surfaces
GB405017A Improvements in or relating to the manufacture of alkali metal hydrides
GB404370A Improved method and apparatus for treating textile materials with circulating liquors
GB402824A Improvements in or relating to apparatus for the carrying out of gas reactions
GB401351A Improvements in or relating to the manufacture of hydrocyanic acid
GB401008A Improvements in or relating to the refining of copper
GB397914A Improvements in or relating to the stabilisation of chlorinated hydrocarbons
GB395377A Improvements in or relating to tin plating
GB389138A Improvements in process for treating liquor employed in kiers and the like
US1886034A Odorant for refrigeration
US1845341A Tanning of fur skins
US1905900A Process for vapor recovery
US1878655A Process of and compound for treating rubber
US1888066A Temperature control of exothermic reactions
US1871019A Process for concentrating formaldehyde solutions
US1890874A Manufacture of hydrogen iodide