Thanh Ngoc Cao

US Patent:

20120046868, Feb 23, 2012

Filed:

Aug 19, 2010

Appl. No.:

12/859416

Inventors:

Borislav J. Tchakarov - Houston TX, US
Tsili Wang - Katy TX, US
Rodney S. Guenther - Houston TX, US
Thanh H. Cao - Spring TX, US
Caimu Tang - Sugar Land TX, US

Assignee:

SMITH INTERNATIONAL, INC. - Houston TX

International Classification:

G01V 1/40

US Classification:

702 9

Abstract:

A closed-loop method for geosteering includes acquiring logging while drilling data and processing the logging while drilling data downhole while drilling to obtain a geosteering correction (a correction to the drilling direction based upon the LWD measurements). The geosteering correction is further processed downhole to obtain new steering tool settings which are then applied to the steering tool to change the direction of drilling. These steps are typically repeated numerous times without the need for uphole processing or surface intervention.

US Patent:

52205932, Jun 15, 1993

Filed:

Mar 31, 1992

Appl. No.:

7/861023

Inventors:

Robert G. Zicker - Houston TX
Thanh H. Cao - Houston TX
Daniel G. Borkowski - The Woodlands TX
Donald A. Plouff - The Woodlands TX
Phillip D. Brown - The Woodlands TX

Assignee:

GTE Mobile Communications Service Corporation - Houston TX

International Classification:

H04M 1100

US Classification:

379 59

Abstract:

A system (10) for operating a multiplicity of credit card reader-equipped cellular mobile radiotelephones (CMRs 12) as credit card paystations is disclosed. The CMRs (12) incorporate a remotely programmable unit (RPU 48) which controls credit card operation (1400, 1700) and which controls data communication sessions (1800, 1900, 2100) with a credit card (CC) host (26) and a remote programming (RP) host (24). The RPU (48) resides between a conventional control unit (CU 42) and a conventional transmit/receive unit (TRU 62) of a conventional CMR. The RPU (48) monitors messages (1200, 1300) transmitted from the CU (42) and from the TRU (62). The CMR (12) powers up in a locked state (1402), within which a credit card (88) may be read. The credit card is locally validated (1421) at CMR 12. If the validation is successful, the CMR (12) is unlocked so that a call may be placed.

US Patent:

51446499, Sep 1, 1992

Filed:

Oct 24, 1990

Appl. No.:

7/602698

Inventors:

Robert G. Zicker - Houston TX
Thanh H. Cao - Houston TX
Daniel G. Borkowski - The Woodlands TX
Donald A. Plouff - The Woodlands TX
Phillip D. Brown - The Woodlands TX

Assignee:

GTE Mobile Communications Service Corporation - Houston TX

International Classification:

H04M 1100

US Classification:

379 59

Abstract:

A system (10) for operating a multiplicity of credit card reader-equipped cellular mobile radiotelephones (CMRs 12) as credit card paystations is disclosed. The CMRs (12) incorporate a remotely programmable unit (RPU 48) which controls credit card operation (1400, 1700) and which controls data communication sessions (188, 1900, 2100) with a credit card (CC) host (26) and a remote programming (RP) host (24). The RPU (48) resides between a conventional control unit (CU 42) and a conventional transmit/receive unit (TRU 62) of a conventional CMR. The RPU (48) monitors messages (1200, 1300) transmitted from the CU (42) and from the TRU (62). The CMR (12) powers up in a locked state (1402), within which a credit card (88) may be read. The credit card is locally validated (1421) at CMR 12. If the validation is successful, the CMR (12) is unlocked so that a call may be placed.