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

Patent Owner(s)

Patent Owner	Address
CORPEX TECHNOLOGIES INC	SUITE 154 5400 SOUTH MIAMI BOULEVARD MORRISVILLE NC 27560

International Classification(s)

• B08B:CLEANING IN GENERAL; PREVENTION OF FOULING IN GENE....

• 1996 Application Filing Year
• B08B Class
• 562 Applications Filed
• 248 Patents Issued To-Date
• 44.13 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
D'Muhala, Thomas F	Raleigh, NC	12	116
# of filed Patents : 12 Total Citations : 116
Strickland, J Michael	Durham, NC	2	8
# of filed Patents : 2 Total Citations : 8
Zietlow, Thomas C	Apex, NC	5	49
# of filed Patents : 5 Total Citations : 49

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Patent Citation Ranking

• 4 Citation Count
• B08B Class

• 1.12 % this patent is cited more than
• 27 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: 6744500

Identification of material inclusions in pulp and paper using Raman spectroscopy

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Abstract

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Pulp and/or paper samples are scanned with a Laser Raman Spectroscopic probe, utilizing Raman spectroscopic technology, to generate Raman spectroscopic images of all or selected ones of the constituents and/or contaminants contained in the sample, to compare the same with a library of Raman spectroscopic fingerprints of known constituents and/or contaminants, and to identify and communicate data on all or selected ones of the constituents and/or contaminants for purposes of controlling the paper making process and/or determination of the quality of the paper produced.

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Description

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Claims

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Legal Events

 

• AS2020
• AS2012
• AS2012
• STCH2012
• FP2012
• LAPS2012
• REMI2012
• AS�2009
• FPAY2008
• SULP2008
• AS�2008
• AS2007
• AS2007
• AS�2007
• AS2007
• AS2007
• REMI2007
• AS�2007
• I2004
• P2003
• F2001
• AS2001

Date	Code	Event	Description
Dec 22, 2020	AS	ASSIGNMENT	free format text: SECURITY INTEREST;ASSIGNOR:HARVARD BIOSCIENCE, INC.;REEL/FRAME:054855/0481 Owner name: CITIZENS BANK, N.A., MASSACHUSETTS Effective Date: Dec 22, 2020
Dec 21, 2012	AS	ASSIGNMENT	free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANK OF NEW YORK MELLON;REEL/FRAME:029529/0873 Owner name: NEWPAGE CORPORATION, NEWPAGE WISCONSIN SYSTEM INC. Effective Date: Dec 21, 2012
Aug 20, 2012	AS	ASSIGNMENT	free format text: RELEASE BY SECURED PARTY;ASSIGNOR:SILICON VALLEY BANK;REEL/FRAME:028824/0688 Owner name: DIGILAB INC, MASSACHUSETTS Effective Date: Aug 20, 2012
Jul 02, 2012	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jun 01, 2012	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jun 01, 2012
Jun 01, 2012	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Jan 16, 2012	REMI	MAINTENANCE FEE REMINDER MAILED
Sep 11, 2009	AS�	SECURITY INTEREST	free format text: AMENDMENT TO PATENT SECURITY AGREEMENT (TO REFLECT NAME CHANGE OF RECEIVING PARTY);ASSIGNOR:NEWPAGE WISCONSIN SYSTEM, INC. (F/K/A STORA ENSO NORTH AMERICA CORP.);REEL/FRAME:023234/0869 Owner name: THE BANK OF NEW YORK MELLON, AS PRIORITY LIEN COLL Effective Date: Sep 11, 2009 free format text: AMENDMENT TO PATENT SECURITY AGREEMENT (TO REFLECT NAME CHANGE OF RECEIVING PARTY);ASSIGNOR:NEWPAGE WISCONSIN SYSTEM, INC. (F/K/A STORA ENSO NORTH AMERICA CORP.);REEL/FRAME:023234/0884 Owner name: THE BANK OF NEW YORK MELLON, AS PARITY LIEN COLLAT Effective Date: Sep 11, 2009
Jan 28, 2008	FPAY	FEE PAYMENT	year of fee payment: 4
Jan 28, 2008	SULP	SURCHARGE FOR LATE PAYMENT
Jan 07, 2008	AS�	SECURITY INTEREST	free format text: SECURITY AGREEMENT;ASSIGNOR:DIGILAB, INC.;REEL/FRAME:020403/0739 Owner name: SILICON VALLEY BANK, CALIFORNIA Effective Date: Jan 07, 2008
Dec 27, 2007	AS	ASSIGNMENT	free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE CHANGE OF NAME PREVIOUSLY RECORDED ON REEL 020385 FRAME 0519. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE SHOULD READ NEWPAGE WISCONSIN SYSTEM INC. NOT NEWPAGE WISCONSIN SYSTEMS INC..;ASSIGNOR:STORA ENSO NORTH AMERICA CORP.;REEL/FRAME:020582/0304 Owner name: NEWPAGE WISCONSIN SYSTEM INC., OHIO Effective Date: Dec 27, 2007 free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE CHANGE OF NAME PREVIOUSLY RECORDED ON REEL 020385 FRAME 0519. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE SHOULD READ NEWPAGE WISCONSIN SYSTEM INC. NOT NEWPAGE WISCONSIN SYSTEMS INC.;ASSIGNOR:STORA ENSO NORTH AMERICA CORP.;REEL/FRAME:020582/0304 Owner name: NEWPAGE WISCONSIN SYSTEM INC., OHIO Effective Date: Dec 27, 2007
Dec 27, 2007	AS	ASSIGNMENT	free format text: CHANGE OF NAME;ASSIGNOR:STORA ENSO NORTH AMERICA CORP.;REEL/FRAME:020385/0519 Owner name: NEWPAGE WISCONSIN SYSTEMS INC., OHIO Effective Date: Dec 27, 2007
Dec 21, 2007	AS�	SECURITY INTEREST	free format text: SECURITY AGREEMENT;ASSIGNOR:STORA ENSO NORTH AMERICA CORP.;REEL/FRAME:020317/0526 Owner name: THE BANK OF NEW YORK, AS PARITY LIEN COLLATERAL TR Effective Date: Dec 21, 2007
Dec 21, 2007	AS	ASSIGNMENT	free format text: SECURITY AGREEMENT;ASSIGNOR:STORA ENSO NORTH AMERICA CORP.;REEL/FRAME:020299/0766 Owner name: THE BANK OF NEW YORK, AS PRIORITY LIEN COLLATERAL Effective Date: Dec 21, 2007
Dec 14, 2007	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SPECTRACODE, INC.;REEL/FRAME:020270/0994 Owner name: DIGILAB, INC., MASSACHUSETTS Effective Date: Dec 14, 2007
Dec 10, 2007	REMI	MAINTENANCE FEE REMINDER MAILED
Nov 30, 2007	AS�	SECURITY INTEREST	free format text: SECURITY AGREEMENT;ASSIGNOR:DIGILAB, INC.;REEL/FRAME:020317/0912 Owner name: HARVARD BIOSCIENCE, INC., MASSACHUSETTS Effective Date: Nov 30, 2007
Jun 01, 2004	I	Issuance
Apr 24, 2003	P	Published
Oct 23, 2001	F	Filing
Oct 23, 2001	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRADBURY, JAMES E.;SMITH, DONALD R.;GRANT, EDWARD R.;AND OTHERS;REEL/FRAME:012357/0664;SIGNING DATES FROM 20011008 TO 20011023 Owner name: STORA ENSO NORTH AMERICA CORP., WISCONSIN free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRADBURY, JAMES E.;SMITH, DONALD R.;GRANT, EDWARD R.;AND OTHERS;REEL/FRAME:012357/0664;SIGNING DATES FROM 20011008 TO 20011023 Owner name: SPECTRACODE, INC., INDIANA