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KELLER CARL E

Overview
  • Total Patents
    27
  • GoodIP Patent Rank
    158,586
About

KELLER CARL E has a total of 27 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets civil engineering, measurement and engines, pumps and turbines are SONDEX PLC, GREENE HASKELL M and HYDROPHILIC AS.

Patent filings per year

Chart showing KELLER CARL Es patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Keller Carl E 27
#2 Carl E Keller 1

Latest patents

Publication Filing date Title
US2020386082A1 Optimal Screened Subsurface Well Design
US2020232292A1 Method of Installation of a Flexible Borehole Liner Without Eversion
US10954759B1 Method for increasing pressure in a flexible liner with a weighted wellhead
US10472931B1 Method for removal of flexible liners from boreholes
US10030486B1 Method for installation or removal of flexible liners from boreholes
US2016348482A1 Shallow ground water characterization system using flexible borehole liners
US2016069727A1 Method for air-coupled water level meter system
US2016047225A1 Method for slender tube, multi-level, subsurface borehole sampling system
US10060252B1 Method for mapping of flow arrivals and other conditions at sealed boreholes
US2014262347A1 Method for sealing of a borehole liner in an artesian well
US2014262346A1 Method of installation of flexible borehole liner under artesian conditions
US2012173148A1 Measurement of hydraulic head profile in geologic media
CA2714692A1 Monitoring the water tables in multi-level ground water sampling systems
US2010319448A1 Monitoring the water tables in multi-level ground water sampling systems
US2009211765A1 Method for rapid sealing of boreholes
US7281422B2 Method for borehole conductivity profiling
EP1552274A2 Borehole conductivity profiler
US4860587A Stress gauge
US1505469A Umbrella lock