Kingwood, Texas
United States
10
2012-02-02
The entities that hold a legal rights for patent applications filed by inventor Ruff Daniel E.:
Daniel E. Ruff from Kingwood, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Drilling apparatus with reduced exposure of cutters and methods of drilling
#2 | 2011-05-19Drilling apparatus with reduced exposure of cutters and methods of drilling
#3 | 2010-01-21Shank structure for rotary drill bits
#4 | 2008-03-20Rotary drill bits
#5 | 2008-03-20Methods of fabricating rotary drill bits
#6 | 2006-12-14Drilling apparatus with reduced exposure of cutters and methods of drilling
#7 | 2006-09-28Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
#8 | 2006-06-27Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
#9 | 2005-12-29Drill bits with reduced exposure of cutters
#10 | 2005-08-30Drill bits with reduced exposure of cutters
3085401 ⎘