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

Patent Owner(s)

Patent Owner	Address
HALLSTAR INNOVATIONS CORP	120 S RIVERSIDE PLAZA SUITE 1620 CHICAGO IL 60606

International Classification(s)

• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
O'Rourke, Stephen E	Bolingbrook, IL	3	5
# of filed Patents : 3 Total Citations : 5
Stefanisin, Kimberly L	Oak Lawn, IL	14	111
# of filed Patents : 14 Total Citations : 111
Wentworth, Gary	Chicago, IL	21	316
# of filed Patents : 21 Total Citations : 316

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Patent Citation Ranking

• 3 Citation Count
• C08K Class

• 6.25 % this patent is cited more than
• 18 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
October 23, 2007	US,7285588,B2   US7285588B2	GRANTED PATENT AS SECOND PUBLICATION
October 28, 2004	US,20040214933,A1   US20040214933A1	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

 

• MAFP2023
• MAFP2019
• I2015
• STCF2015
• AS2015
• P2014
• F2014

Date	Code	Event	Description
Apr 13, 2023	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
Apr 12, 2019	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4
Oct 13, 2015	I	Issuance
Sep 23, 2015	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Sep 09, 2015	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HASHEMI, DARUSH DAVID;LE, HAI;PARVIN, JACK;AND OTHERS;SIGNING DATES FROM 20150901 TO 20150909;REEL/FRAME:036525/0369 Owner name: ACCURIDE INTERNATIONAL INC., CALIFORNIA
Sep 18, 2014	P	Published
Mar 13, 2014	F	Filing