John Forrest — 12 Patents at Drilex Systems

John Forrest has been granted 12 US patents while listed as an inventor at Drilex Systems. The first was granted in 1988 and the most recent in August 2021. John Forrest ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list John Forrest in Louisburg, KS, US.

Patents per Year

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date
11104837	Drilling fluids and methods for making the same	—	2021-08-31
10421892	Drilling fluids and methods for making the same	—	2019-09-24
6118542	Method and apparatus for determination of a quality property of a piece of meat	Jan Rud Andersen, Claus Borggaard, Allan J. Rasmussen	2000-09-12
5269383	Navigable downhole drilling system	—	1993-12-14
5248896	Power generation from a multi-lobed drilling motor	—	1993-09-28
5171138	Composite stator construction for downhole drilling motors	—	1992-12-15
4926949	Thermal shield for drilling motors	—	1990-05-22
4901806	Apparatus for controlled absorption of axial and torsional forces in a well string	—	1990-02-20
4844179	Drill string stabilizer	Rory McCrae Tulloch, William M. Stewart	1989-07-04
4807708	Directional drilling of a drill string	Roger John Catherall, William M. Stewart, Randall Pounds	1989-02-28
4796704	Drop ball sub-assembly for a down-hole device	William M. Stewart, Rory McCrae Tulloch	1989-01-10
4775017	Drilling using downhole drilling tools	Rory McCrae Tulloch, William M. Stewart	1988-10-04

John Forrest — 12 Patents

Patents per Year

Issued Patents All Time

Patent Widget