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NORTHERN STATES POWER CO

Overview
  • Total Patents
    24
About

NORTHERN STATES POWER CO has a total of 24 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets environmental technology, materials and metallurgy and chemical engineering are AJO STAHLBAU, BECHTEL GROUP INC and BRASSERT & CO.

Patent filings per year

Chart showing NORTHERN STATES POWER COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lehto John M 18
#2 Smith Raymond L 7
#3 Ostlie David L 2
#4 Mach Peter Paul 1
#5 John M Letho 1
#6 John M Lehto 1
#7 Letho John M 1
#8 Mach Frank Vlastimil 1
#9 Skinner Michael F 1
#10 Mach Frank V 1

Latest patents

Publication Filing date Title
US5019360A Method for the processing of fly ash, scrubber sludge and the like; and product
US5078752A Coal gas productions coal-based combined cycle power production
US5055131A Cogeneration process for production of energy and iron materials
US4986966A Retrofit flue gas scrubber system
US5066325A Cogeneration process for production of energy and iron materials, including steel
ZA8901015B Method for the processing of fly ash,scrubber sludge and the like;and product
WO8904811A1 Method for the processing of fly ash, scrubber sludge and the like; and products recovered therefrom
US4861558A Flue gas scrubber system with chloride removal
ZA8806470B Cogeneration process for production of energy and iron materials,including steel
CN1036247A Produce the integrated processes of energy and iron steel
CA1296192C Cogeneration process for production of energy and iron materials, including steel
EP0377636A1 Congeneration process for production of energy and iron materials, including steel
US5045112A Cogeneration process for production of energy and iron materials, including steel
US5064174A Apparatus for production of energy and iron materials, including steel
US4853195A Flue gas scrubber system
US4762686A Flue gas scrubber system
US4601430A Ash grinder for scrubber system