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LAYNE LESLIE A

Overview
  • Total Patents
    17
About

LAYNE LESLIE A has a total of 17 patent applications. Its first patent ever was published in 1931. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering, machines and transport are WEATHERFORD RIG SYSTEMS AS, E2TECH LTD and AKER KVAERNER MH AS.

Patent filings in countries

World map showing LAYNE LESLIE As patent filings in countries
# Country Total Patents
#1 United States 17

Patent filings per year

Chart showing LAYNE LESLIE As patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Machines
#3 Transport

Top inventors

# Name Total Patents
#1 Layne Leslie A 17

Latest patents

Publication Filing date Title
US2297308A Well bottom assembly for graveling
US2356769A Washing gravel out of perforate well casings
US2261440A Well head control
US2261441A Cementing machine
US2120983A Strainer for wells
US2155720A Well strainer
US2155719A Well strainer
US2161068A Boat drive
US2162261A Well cementing
US2174795A Screen protector
US2120982A Lead seal
US2135583A Combination packer
US2020471A Whipstock packer
US2082111A Well packer mechanism
US2014770A Apparatus for placing gravel in wells
US1945943A Hydraulic setting tool
US1975162A Method for placing divided materials at relatively inaccessible points