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LYNCH DAVIS INC

Overview
  • Total Patents
    59
About

LYNCH DAVIS INC has a total of 59 patent applications. Its first patent ever was published in 1978. It filed its patents most often in United States, Canada and Mexico. Its main competitors in its focus markets civil engineering are PREC DRILLING CORP, STRATALOC TECHNOLOGY PRODUCTS and PANIN NIKOLAJ MITROFANOVICH.

Patent filings per year

Chart showing LYNCH DAVIS INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling

Top inventors

# Name Total Patents
#1 Coone Malcolm G 25
#2 Ehlinger Jeffry C 20
#3 Cole Frank 17
#4 Miller Jack E 9
#5 Allamon Jerry P 8
#6 Musselwhite Jeffrey D 8
#7 Hassanzadeh Hedayat H 7
#8 Patterson Ronnie G 6
#9 Ehlinger Jeff 2
#10 Graen Larry 2

Latest patents

Publication Filing date Title
US2009008086A1 Centering structure for tubular member and method of making same
AU2003218351A1 Valve system and method
US6562401B2 Method for making a stand-off device to prevent an oilfield tubular from contacting the side of the wellbore
US6401811B1 Tool tie-down
US6401824B1 Well completion convertible float shoe/collar
US5842517A Anti-rotational cementing apparatus
US5584343A Method and apparatus for filling and circulating fluid in a wellbore during casing running operations
US5566772A Telescoping casing joint for landing a casting string in a well bore
SG126593G Casing centralizer
US5411095A Apparatus for cementing a casing string
US5234052A Cementing apparatus
US5197542A Well packer
US5150756A Well completion apparatus
US5085273A Casing lined oil or gas well
CA2021932A1 Cementing apparatus
US5027894A Through the tubing bridge plug
US5024273A Cementing apparatus and method
US4909322A Casing centralizer
US4892144A Inflatable tools
GB2031050A Well cementing/plug drilling apparatus and cementing and drilling process