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

Patent Owner(s)

Patent Owner	Address
STONE & WEBSTER PROCESS TECHNOLOGY INC	1430 ENCLAVE PARKWAY HOUSTON TX 77077

International Classification(s)

• C10G:CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HY....

• 2003 Application Filing Year
• C10G Class
• 259 Applications Filed
• 125 Patents Issued To-Date
• 48.27 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Letzsch, Warren S	Ellicott City, MD	8	111
# of filed Patents : 8 Total Citations : 111

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Patent Citation Ranking

• 3 Citation Count
• C10G Class

• 3.38 % this patent is cited more than
• 20 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 14, 2005	US,6905591,B2   US6905591B2	GRANTED PATENT AS SECOND PUBLICATION
April 01, 2004	US,20040060846,A1   US20040060846A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6571839

Automatic press roll control

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Abstract

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According to this invention, introduction of dynamic, closed-loop force and position control over press rolls of a planer or infeed table provides a dramatic increase in capability, performance, and reliability, as compared to the prior art.

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Description

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Claims

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Claims data not available

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• AS2004
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• STCF2003
• AS2002
• P2001
• AS2001
• F2001
• PD2000

Date	Code	Event	Description
Mar 30, 2015	AS�	SECURITY INTEREST	free format text: RELEASE OF SECURITY AGREEMENT;ASSIGNOR:WELLS FARGO BANK, NATIONAL ASSOCIATION;REEL/FRAME:036140/0736 Owner name: U.S. NATURAL RESOURCES, INC, WASHINGTON Effective Date: Mar 30, 2015
Nov 03, 2014	FPAY	FEE PAYMENT	year of fee payment: 12
Dec 20, 2013	AS	ASSIGNMENT	free format text: CHANGE OF NAME;ASSIGNOR:U.S. NATURAL RESOURCES, INC.;REEL/FRAME:033733/0014 Owner name: USNR, LLC, WASHINGTON Effective Date: Dec 20, 2013
Dec 20, 2013	AS	ASSIGNMENT	free format text: SECURITY AGREEMENT;ASSIGNOR:U.S. NATURAL RESOURCES, INC.;REEL/FRAME:032132/0664 Owner name: WELLS FARGO BANK, NATIONAL ASSOCIATION, OREGON Effective Date: Dec 20, 2013
Dec 16, 2013	AS	ASSIGNMENT	free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CNM ACQUISITION LLC;REEL/FRAME:031790/0179 Owner name: U.S. NATURAL RESOURCES, INC., WASHINGTON Effective Date: Dec 13, 2013 free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CNM ACQUISITION LLC;REEL/FRAME:031793/0246 Owner name: U.S. NATURAL RESOURCES, INC., WASHINGTON Effective Date: Dec 16, 2013
Dec 02, 2010	FPAY	FEE PAYMENT	year of fee payment: 8
Oct 08, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CNM ACQUISITION LLC;REEL/FRAME:025150/0362 Owner name: U.S. NATURAL RESOURCES, INC., WASHINGTON Effective Date: Oct 08, 2010
Nov 02, 2009	FEPP	FEE PAYMENT PROCEDURE	free format text: PAT HOLDER NO LONGER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: STOL); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
May 08, 2009	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THE COE MANUFACTURING COMPANY;REEL/FRAME:022783/0132 Owner name: CNM ACQUISITION LLC, WASHINGTON Effective Date: May 08, 2009
Nov 15, 2006	AS�	SECURITY INTEREST	free format text: SECURITY AGREEMENT;ASSIGNOR:COE MANUFACTURING COMPANY;REEL/FRAME:018882/0504 Owner name: BANK OF NEW YORK, TEXAS Effective Date: Nov 15, 2006
Jul 21, 2006	FPAY	FEE PAYMENT	year of fee payment: 4
Oct 20, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THE COE MANUFACTURING COMPANY;REEL/FRAME:015442/0276 Owner name: ABLECO FINANCE LLC, NEW YORK Effective Date: Oct 20, 2004
Jun 03, 2003	I	Issuance
May 14, 2003	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
May 20, 2002	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COASTAL MACHINERY COMPANY;REEL/FRAME:013006/0524 Owner name: COE MANUFACTURING COMPANY, THE, OREGON Effective Date: May 20, 2002
Dec 20, 2001	P	Published
Jul 23, 2001	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALLISON, DENNIS;BUTZ, JOE;REEL/FRAME:012008/0563;SIGNING DATES FROM 20010320 TO 20010321 Owner name: COASTAL MACHINERY COMPANY, OREGON
Mar 14, 2001	F	Filing
Mar 14, 2000	PD	Priority Date