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

Patent Owner(s)

Patent Owner	Address
SURMODICS IVD INC	9924 WEST 74TH STREET EDEN PRAIRIE MN 55344-3523

International Classification(s)

• C12Q:MEASURING OR TESTING PROCESSES INVOLVING ENZYMES O....
• G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Nelson, Wendy	Woodbury, US	3	12
# of filed Patents : 3 Total Citations : 12
Opperman, Gary	St. Louis Park, US	13	107
# of filed Patents : 13 Total Citations : 107

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• C12Q Class

• 0 % this patent is cited more than
• 10 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jul 6, 2026

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
January 06, 2015	US,8927226,B2   US8927226B2	GRANTED PATENT AS SECOND PUBLICATION
August 21, 2014	US,20140234874,A1   US20140234874A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8927226

Compositions and methods for in vitro diagnostic tests including sulfonic acid

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Abstract

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The invention provides compositions, kits, and methods for performing colorimetric analysis. A substrate is reacted to generate a chromogenic reaction product, and a reaction stop reagent that is a sulfonic acid is added to stop and stabilize the reaction product. The absorbance properties of the chromogenic reaction product can be maintained over significantly longer periods of time of that of conventional reagents and methods. The sulfonic acid can be used in assays such as ELISAs in order to provide a more accurate and safer detection of analytes in a biological sample.

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Description

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Claims

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Legal Events

 

• AS2022
• MAFP2022
• MAFP2018
• I2015
• STCF2014
• AS2014
• P2014
• F2014
• AS2013
• PD2012

Date	Code	Event	Description
Oct 14, 2022	AS	ASSIGNMENT	free format text: SECURITY INTEREST;ASSIGNORS:SURMODICS, INC.;SURMODICS SHARED SERVICES, LLC;SURMODICS HOLDINGS, LLC;AND OTHERS;REEL/FRAME:068762/0423 Owner name: MIDCAP FUNDING IV TRUST, MARYLAND Effective Date: Oct 14, 2022
Jun 22, 2022	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Jul 06, 2018	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) year of fee payment: 4
Jan 06, 2015	I	Issuance
Dec 17, 2014	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Dec 03, 2014	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SURMODICS, INC.;REEL/FRAME:035195/0989 Owner name: SURMODICS IVD, INC., MINNESOTA Effective Date: Dec 03, 2014
Aug 21, 2014	P	Published
Apr 30, 2014	F	Filing
Mar 25, 2013	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OPPERMAN, GARY;NELSON, WENDY;REEL/FRAME:032792/0004 Owner name: SURMODICS, INC., MINNESOTA Effective Date: Mar 25, 2013
Mar 23, 2012	PD	Priority Date