Assignee
LYNCH DAVIS INC
US·19 granted patents·1,446 citations·filing 1978–2008
Technology mixE21B19
Top patents by PatentIndex Score
19 records- 0193US5584343AMethod and apparatus for filling and circulating fluid in a wellbore during casing running operationsLYNCH DAVIS INC·Filed 1995·Granted Dec 17, 1996·188 cites·7 claims
- 0291US5024273ACementing apparatus and methodLYNCH DAVIS INC·Filed 1990·Granted Jun 18, 1991·176 cites·24 claims
- 0390US5234052ACementing apparatusLYNCH DAVIS INC·Filed 1992·Granted Aug 10, 1993·153 cites·16 claims
- 0490US4892144AInflatable toolsLYNCH DAVIS INC·Filed 1989·Granted Jan 9, 1990·93 cites·27 claims
- 0589US6679336B2Multi-purpose float equipment and methodLYNCH DAVIS INC·Filed 2001·Granted Jan 20, 2004·90 cites·54 claims
- 0687US5566772ATelescoping casing joint for landing a casting string in a well boreLYNCH DAVIS INC·Filed 1995·Granted Oct 22, 1996·157 cites·26 claims
- 0782US5085273ACasing lined oil or gas wellLYNCH DAVIS INC·Filed 1990·Granted Feb 4, 1992·83 cites·11 claims
- 0881US5842517AAnti-rotational cementing apparatusLYNCH DAVIS INC·Filed 1997·Granted Dec 1, 1998·92 cites·16 claims
- 0978US5411095AApparatus for cementing a casing stringLYNCH DAVIS INC·Filed 1993·Granted May 2, 1995·81 cites·33 claims
- 1077US6401824B1Well completion convertible float shoe/collarLYNCH DAVIS INC·Filed 2000·Granted Jun 11, 2002·46 cites·18 claims
- 1175US6401811B1Tool tie-downLYNCH DAVIS INC·Filed 2000·Granted Jun 11, 2002·39 cites·9 claims
- 1272US5027894AThrough the tubing bridge plugLYNCH DAVIS INC·Filed 1990·Granted Jul 2, 1991·56 cites·7 claims
- 1372US4171019AApparatus and method for re-entering and cementing an underwater wellLYNCH DAVIS INC·Filed 1978·Granted Oct 16, 1979·39 cites·9 claims
- 1464US5197542AWell packerLYNCH DAVIS INC·Filed 1992·Granted Mar 30, 1993·40 cites·3 claims
- 1561US5150756AWell completion apparatusLYNCH DAVIS INC·Filed 1991·Granted Sep 29, 1992·43 cites·4 claims
- 1658US7849918B2Centering structure for tubular member and method of making sameLYNCH DAVIS INC·Filed 2008·Granted Dec 14, 2010·12 cites·16 claims
- 1752US4909322ACasing centralizerLYNCH DAVIS INC·Filed 1989·Granted Mar 20, 1990·28 cites·5 claims
- 1850US6439304B2Stand-off deviceLYNCH DAVIS INC·Filed 2001·Granted Aug 27, 2002·17 cites·23 claims
- 1946US6562401B2Method for making a stand-off device to prevent an oilfield tubular from contacting the side of the wellboreLYNCH DAVIS INC·Filed 2001·Granted May 13, 2003·13 cites·19 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →