Inventor

CRUZ ANTONIO MARIA GUIMARAES LEITE

NL5 patents

⚠️ This page may combine multiple inventors who share the name “CRUZ ANTONIO MARIA GUIMARAES LEITE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHELL OIL CO

4 patents

US7546888B2Jun 16, 2009

Percussive drill bit

SHELL OIL CO23 citations89

US7726419B2Jun 1, 2010

Drill bit, system, and method for drilling a borehole in an earth formation

SHELL OIL CO7 citations70

US7455126B2Nov 25, 2008

Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole

SHELL OIL CO5 citations59

US9309755B2Apr 12, 2016

Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations

SHELL OIL CO2 citations52

OCAMPOS ERNESTO RAFAEL FONSECA

1 patent

US8267185B2Sep 18, 2012

Circulated heated transfer fluid systems used to treat a subsurface formation

OCAMPOS ERNESTO RAFAEL FONSECA57 citations93