J. Ford Brett has been granted 11 US patents while listed as an inventor at Amoco . The first was granted in 1987 and the most recent in November 1993. J. Ford Brett ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list J. Ford Brett in Tulsa, OK, US.
Patents per Year Patents granted per year, 1987 to 1993 Bar chart with a peak of 3 patents in 1987. peak 3 1987: 3 patents 1987 1988: 1 patents 1988 1990: 2 patents 1990 1991: 3 patents 1991 1992: 1 patents 1992 1993: 1 patents 1993 Issued Patents All Time
Showing 1–11 of 11 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
RE34435 Whirl resistant bit Tommy M. Warren 1993-11-09
5131478 Low friction subterranean drill bit and related methods Tommy M. Warren , L. Allen Sinor , Suzanne M. Behr 1992-07-21
5042596 Imbalance compensated drill bit Tommy M. Warren 1991-08-27
$20,046,000
5010789 Method of making imbalanced compensated drill bit Tommy M. Warren 1991-04-30
$22,076,000
4982802 Method for stabilizing a rotary drill string and drill bit Tommy M. Warren , Warren J. Winters 1991-01-08
$63,215,000
4948925 Apparatus and method for rotationally orienting a fluid conducting conduit Warren J. Winters , Michael Burton , Tommy M. Warren 1990-08-14
$29,327,000
4932484 Whirl resistant bit Tommy M. Warren 1990-06-12
$11,775,000
4721172 Apparatus for controlling the force applied to a drill bit while drilling Tommy M. Warren , Warren J. Winters 1988-01-26
$10,961,000
4705117 Method and apparatus for reducing drill bit wear Tommy M. Warren , Warren J. Winters 1987-11-10
$8,285,000
4660656 Method and apparatus for controlling the rotational torque of a drill bit Tommy M. Warren , Warren J. Winters 1987-04-28
$51,201,000
4655303 Drill bit Warren J. Winters , Tommy M. Warren 1987-04-07
$37,839,000