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NEILSEN KARL P

Overview
  • Total Patents
    11
About

NEILSEN KARL P has a total of 11 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States. Its main competitors in its focus markets engines, pumps and turbines, civil engineering and machines are SPEARS HARRY L, CANADA TIEFBOHRGERAETE UND MAS and STRATABOLT PROPRIETARY LTD.

Patent filings in countries

World map showing NEILSEN KARL Ps patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing NEILSEN KARL Ps patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Neilsen Karl P 11
#2 Byers Daniel E 1

Latest patents

Publication Filing date Title
US2628571A Seat assembly for pump cages
US2294568A Ball valve cage
US2206466A Duplex pump
US1717619A Multiple-tube inserted pump
US1757329A Oil-well flow device
US1676661A Standing-valve puller
US1628901A Pump-plunger assembly
US1628900A Deep-well gas and oil separator
US1703428A Well heating and pumping system
US1608114A Oil pump
US1649971A Oil pump