Individual holder
CHERRINGTON MARTIN D
US·10 granted patents·380 citations·filing 1977–2015
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
10 records- 0192US4679637AApparatus and method for forming an enlarged underground arcuate bore and installing a conduit thereinCHERRINGTON MARTIN D·Filed 1986·Granted Jul 14, 1987·129 cites·50 claims
- 0283US4221503ADrilling method and apparatus for large diameter pipeCHERRINGTON MARTIN D·Filed 1977·Granted Sep 9, 1980·51 cites·25 claims
- 0378US4784230AApparatus and method for installing a conduit within an arcuate boreCHERRINGTON MARTIN D·Filed 1987·Granted Nov 15, 1988·60 cites·17 claims
- 0468US4899835AJet bit with onboard deviation meansCHERRINGTON MARTIN D·Filed 1989·Granted Feb 13, 1990·38 cites·27 claims
- 0567US9534705B2Method and portable apparatus for thrusting a pipe into and out of an earthen formationCHERRINGTON MARTIN D·Filed 2015·Granted Jan 3, 2017·1 cites·24 claims
- 0666US4785885AMethod and apparatus for cementing a production conduit within an underground arcuate boreCHERRINGTON MARTIN D·Filed 1987·Granted Nov 22, 1988·37 cites·15 claims
- 0761US5456552AMethod and apparatus for installing pipe in horizontal boreholeCHERRINGTON MARTIN D·Filed 1993·Granted Oct 10, 1995·33 cites·24 claims
- 0856US4078617APortable drill rig for boring underground inverted arcuate pathsCHERRINGTON MARTIN D·Filed 1977·Granted Mar 14, 1978·18 cites·13 claims
- 0945US4135586AApparatus for constantly rotating casing during installationCHERRINGTON MARTIN D·Filed 1977·Granted Jan 23, 1979·11 cites·6 claims
- 1031US4618008AVertical drilling method and apparatusCHERRINGTON MARTIN D·Filed 1984·Granted Oct 21, 1986·2 cites·19 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →