GUGGENHEIM BROTHERS innovation strategy

Patent filings in countries

#	Industry
#1	Materials and metallurgy
#2	Environmental technology
#3	Machines
#4	Chemical engineering
#5	Surface technology and coating

#	Technology
#1	Water treatment
#2	Non-metallic elements
#3	Metal production and refining
#4	Alkali metal compounds
#5	Unspecified technologies
#6	Flotation
#7	Climate change mitigation in wastewater treatment
#8	Climate change mitigation in goods production
#9	Electrolytic metal production
#10	Compounds containing metals

Publication	Filing date	Title
US2865714A	1954-08-02	Production of anhydrous hydrazine
US2779661A	1952-10-29	Process for producing hydrazine
US2779660A	1952-02-09	Method of producing hydrazine
GB633064A	1946-03-22	Sewage treatment
US2559704A	1946-01-22	Sewage treatment
US2433884A	1944-08-22	Sewage treating apparatus comprising a receptacle having a rotatable support partially submerged in liquid therein and having a matrix of oxidizing bacteria thereon
US2304274A	1940-04-03	Treating sewage
ES146575A1	1939-02-07	A method for the recovery of sulfur dioxide.
US2306425A	1939-01-07	Production of ferric sulphate
US2186453A	1938-01-17	Recovery of sulphur dioxide
US2204777A	1937-09-24	Apparatus for the recovery of salts from aqueous solutions
ES139169A1	1935-08-01	Improvements in wastewater treatment.
US2202135A	1935-04-06	Treating sewage
US2118272A	1935-01-14	Recovery of salts from aqueous solutions
US2167443A	1934-12-28	Treating sewage
US2177857A	1934-12-28	Treating sewage
US2049160A	1934-09-06	Sulphur condenser
US2021679A	1934-08-07	Treating sewage
ES133696A1	1934-03-06	Improvements in the recovery of elemental sulfur.
ES133695A1	1934-03-06	A procedure for recovering sulfur from gases containing sulfur in steam.