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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
BICO DRILLING TOOLS INC	1604 GREENS ROAD HOUSTON TX 77032

International Classification(s)

• E21B:EARTH OR ROCK DRILLING

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Craig, Gordon W	Lincoln, NE	3	46
# of filed Patents : 3 Total Citations : 46
Wood, Steven M	4904 E. 113th, Tulsa, OK 74137	25	551
# of filed Patents : 25 Total Citations : 551

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Patent Citation Ranking

• 31 Citation Count
• E21B Class

• 88.27 % this patent is cited more than
• 30 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 5417281

Reverse Moineau motor and pump assembly for producing fluids from a well

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Abstract

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A downhole submersible fluid pump having a progressive cavity motor section and a progressive cavity pump section. In each section the rotor is fixed and the pumping action occurs by forcing power fluid into the motor chamber around the rotor which action causes the normally fixed stator to rotate around relative to the fixed rotor. This rotary motion is transmitted via the housing to the pump stator formed internally thereof which rotates relative to another fixed rotor drawing fluids from the subterranean formation upwardly as produced fluids.

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Description

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Claims

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Legal Events

 

• AS2010
• AS2008
• FPAY2006
• AS2004
• FPAY2002
• FPAY1998
• I1995
• STCF1995
• AS1994
• AS1994
• F1994
• PD1994

Date	Code	Event	Description
Feb 11, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EXOKO COMPOSITES COMPANY, LLC;REEL/FRAME:026410/0208 Owner name: BICO DRILLING TOOLS, INC., TEXAS Effective Date: Feb 11, 2010
Dec 31, 2008	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:STEVEN M. WOOD REVOCABLE TRUST;REEL/FRAME:022151/0799 Owner name: EXOKO COMPOSITES COMPANY LLC, OKLAHOMA Effective Date: Dec 31, 2008
Nov 21, 2006	FPAY	FEE PAYMENT	year of fee payment: 12
Apr 16, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WOOD, STEVEN M.;REEL/FRAME:022127/0679 Owner name: STEVEN M. WOOD REVOCABLE TRUST, OKLAHOMA Effective Date: Apr 16, 2004
Oct 11, 2002	FPAY	FEE PAYMENT	year of fee payment: 8
Oct 19, 1998	FPAY	FEE PAYMENT	year of fee payment: 4
May 23, 1995	I	Issuance
May 12, 1995	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jul 13, 1994	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EXOKO, INC.;REEL/FRAME:007061/0072 Owner name: WOOD, STEVEN M., OKLAHOMA Effective Date: Jul 13, 1994
Apr 25, 1994	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WOOD, STEVEN M.;CRAIG, GORDON W.;REEL/FRAME:006960/0658;SIGNING DATES FROM 19940127 TO 19940204 Owner name: EXOKO, INC., OKLAHOMA
Feb 14, 1994	F	Filing
Feb 14, 1994	PD	Priority Date