Rogerio H. Silva

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Expandable eccentric reamer and method of use in drilling
- Patent number 6,991,046
- Issue date Jan 31, 2006
- ReedHycalog, L.P.
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sub-reamer for bi-center type tools
- Patent number 6,913,098
- Issue date Jul 5, 2005
- ReedEycalog, L.P.
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bi-center bit adapted to drill casing shoe
- Patent number 6,629,476
- Issue date Oct 7, 2003
- Diamond Products International, Inc.
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bi-center bit adapted to drill casing shoe
- Patent number 6,340,064
- Issue date Jan 22, 2002
- Diamond Products International, Inc.
- Coy M. Fielder
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Expandable eccentric reamer and method of use in drilling
- Publication number 20050092526
- Publication date May 5, 2005
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Application
Sub-reamer for bi-center type tools
- Publication number 20040099448
- Publication date May 27, 2004
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Application
Bi-center bit adapted to drill casing shoe
- Publication number 20020092378
- Publication date Jul 18, 2002
- Coy M. Fielder
- E21 - EARTH DRILLING MINING
Information Patent Application
BI-CENTER BIT ADAPTED TO DRILL CASING SHOE
- Publication number 20010045306
- Publication date Nov 29, 2001
- COY M. FIELDER
- E21 - EARTH DRILLING MINING