Process for solubilizing, reducing and fixing hexavalent chromium contained in chromite ore processing residue into trivalent chromium

United States of America Patent

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Dec 4, 2012
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Mar 1, 2012
app pub date
Jun 3, 2011
filing date
Dec 1, 2008

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Abstract

Processes for reducing hexavalent chromium, Cr(VI) in a chromite ore processing residue matrix and processes for analyzing and determining effective treatment are disclosed.

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Patent Owner(s)

Patent Owner	Address
TRC ENVIRONMENTAL CORPORATION	21 GRIFFIN ROAD NORTH WINDSOR CT 06095

International Classification(s)

C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....

2011 Application Filing Year
C02F Class
894 Applications Filed
701 Patents Issued To-Date
78.42 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Stanforth, Robert	Madison, US	7	7
# of filed Patents : 7 Total Citations : 7

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Process for solubilizing, reducing and fixing hexavalent chromium contained in chromite ore processing residue into trivalent chromium

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United States of America Patent

13153083

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PATENT NO	8323593
APP PUB NO	20120053388A1
SERIAL NO	13153083
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

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
December 04, 2012	US,8323593,B2 US8323593B2	GRANTED PATENT AS SECOND PUBLICATION
March 01, 2012	US,20120053388,A1 US20120053388A1	FIRST PUBLISHED PATENT APPLICATION

Date	Code	Event	Description
Jul 04, 2022	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES	free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY
Jul 04, 2022	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
May 27, 2022	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: May 27, 2022
Jan 17, 2022	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY
May 29, 2018	FEPP	FEE PAYMENT PROCEDURE	free format text: SURCHARGE FOR LATE PAYMENT, SMALL ENTITY (ORIGINAL EVENT CODE: M2554)
May 29, 2018	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551) year of fee payment: 4
Jan 08, 2018	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.)
May 27, 2014	I	Issuance
May 07, 2014	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Nov 27, 2013	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRACER DETECTION TECHNOLOGY CORPORATION;REEL/FRAME:031740/0694 Owner name: COPILOT VENTURES FUND III LLC, DELAWARE Effective Date: Nov 27, 2013
Sep 18, 2012	F	Filing
May 24, 2000	PD	Priority Date

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13153083

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