Assignee
MAURER ENG
US21 patents
Top patents by PatentIndex Score
US4468138AAug 28, 1984
Manufacture of diamond bearings
MAURER ENG402 citations96
US4410054AOct 18, 1983
Well drilling tool with diamond radial/thrust bearings
MAURER ENG448 citations96
US4991668AFeb 12, 1991
Controlled directional drilling system and method
MAURER ENG60 citations95
US6313755B1Nov 6, 2001
Downhole buried utility sensing and data transmission system and method
MAURER ENG57 citations94
US4620601ANov 4, 1986
Well drilling tool with diamond thrust bearings
MAURER ENG137 citations94
US5022471AJun 11, 1991
Deviated wellbore drilling system and apparatus
MAURER ENG29 citations92
US4665997AMay 19, 1987
Pressure balanced bearing assembly for downhole motors
MAURER ENG33 citations92
US4225000ASep 30, 1980
Down hole drilling motor with pressure balanced bearing seals
MAURER ENG35 citations92
US4324299AApr 13, 1982
Downhole drilling motor with pressure balanced bearing seals
MAURER ENG37 citations90
US4185704AJan 29, 1980
Directional drilling apparatus
MAURER ENG137 citations90
US4162619AJul 31, 1979
Drill string shock sub
MAURER ENG59 citations90
US4116451ASep 26, 1978
Shaft seal assembly and seal ring therefor
MAURER ENG91 citations90
US6457538B1Oct 1, 2002
Advanced coring apparatus and method
MAURER ENG35 citations88
US4246976AJan 27, 1981
Down hole drilling motor with pressure balanced bearing seals
MAURER ENG37 citations86
US4828053AMay 9, 1989
Deviated wellbore drilling system and apparatus
MAURER ENG20 citations82
US4114704ASep 19, 1978
Down hole well drilling tool with reversible thrust bearings
MAURER ENG37 citations81
US4225270ASep 30, 1980
Method and apparatus for connecting a flowline to an offshore installation
MAURER ENG25 citations80
US4114703ASep 19, 1978
Well drilling tool having sealed lubrication system
MAURER ENG33 citations80
US4114702ASep 19, 1978
Well drilling tool with lubricant level indicator
MAURER ENG25 citations78
US4340334AJul 20, 1982
Turbodrill with rubber rotor bearings
MAURER ENG16 citations72
US4121675AOct 24, 1978
Apparatus for gripping a shaft or the like
MAURER ENG5 citations61