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

Patent Owner(s)

Patent Owner	Address
KEMIRA OYJ	00180 HELSINKI

International Classification(s)

• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
• D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....

• 2009 Application Filing Year
• C08G Class
• 1426 Applications Filed
• 886 Patents Issued To-Date
• 62.14 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Cotter, Terrence	Kennesaw, US	5	25
# of filed Patents : 5 Total Citations : 25
Rosencrance, Scott W	Douglasville, US	5	56
# of filed Patents : 5 Total Citations : 56
Wilson, Robert	Atlanta, US	175	2575
# of filed Patents : 175 Total Citations : 2575

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Patent Citation Ranking

• 0 Citation Count
• C08G Class

• 0 % this patent is cited more than
• 13 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
November 27, 2012	US,8317973,B2   US8317973B2	GRANTED PATENT AS SECOND PUBLICATION
May 12, 2011	US,20110108221,A1   US20110108221A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8317973

Polyester surfactants for deinking

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Abstract

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The present invention relates to cost-effective and environmentally friendly polyester surfactants containing a condensation esterification product of a polyhydric alcohol, a multimeric acid, and at least one polyalkylene glycol for use in flotation deinking under traditional alkaline, reduced alkali, and true neutral deinking conditions. The polyester deinking surfactants of the present invention will effectively exhibit greater selectivity than traditional flotation deinking surfactants. In particular, the polyester deinking surfactants can give better foam control, improved yield, and no loss in ERIC reduction.

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Description

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Claims

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Claims data not available

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Legal Events

 

• LAPS2024
• STCH2024
• FP2024
• FEPP2024
• AS2024
• MAFP2020
• FPAY2016
• FEPP2015
• I2012
• STCF2012
• ZAAB2012
• ZAAA2012
• P2011
• AS2009
• F2009
• PD2009

Date	Code	Event	Description
Dec 30, 2024	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: LARGE ENTITY
Dec 30, 2024	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Nov 27, 2024	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Nov 27, 2024
Jul 15, 2024	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jan 23, 2024	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KEMIRA WATER SOLUTIONS, INC.;REEL/FRAME:066316/0667 Owner name: KEMIRA OYJ, FINLAND Effective Date: Jan 23, 2024 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KEMIRA CHEMICALS INC.;REEL/FRAME:066316/0470 Owner name: KEMIRA WATER SOLUTIONS, INC., GEORGIA Effective Date: Jan 23, 2024
May 19, 2020	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
May 19, 2016	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 04, 2015	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Nov 27, 2012	I	Issuance
Nov 07, 2012	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Aug 01, 2012	ZAAB	NOTICE OF ALLOWANCE MAILED	free format text: ORIGINAL CODE: MN/=.
Jul 31, 2012	ZAAA	NOTICE OF ALLOWANCE AND FEES DUE	free format text: ORIGINAL CODE: NOA
May 12, 2011	P	Published
Dec 07, 2009	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:COTTER, TERRENCE;ROSENCRANCE, SCOTT;WILSON, ROBERT;REEL/FRAME:023711/0616 Owner name: KEMIRA CHEMICALS, INC., GEORGIA Effective Date: Dec 07, 2009
Nov 11, 2009	F	Filing
Nov 11, 2009	PD	Priority Date