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

Patent Owner(s)

Patent Owner	Address
ARKEMA INC	900 FIRST AVENUE KING OF PRUSSIA PA 19406

International Classification(s)

• C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....

• 2009 Application Filing Year
• C09K Class
• 1606 Applications Filed
• 889 Patents Issued To-Date
• 55.36 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bertelo, Christopher A	Doylestown, US	23	163
# of filed Patents : 23 Total Citations : 163
Macy, Noah E	Royersford, US	17	95
# of filed Patents : 17 Total Citations : 95
Papakonstantopoulos, George J	King of Prussia, US	2	28
# of filed Patents : 2 Total Citations : 28
Schmidt, Scott C	West Chester, US	19	131
# of filed Patents : 19 Total Citations : 131
Van, Horn Brett L	King of Prussia, US	58	815
# of filed Patents : 58 Total Citations : 815

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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 7, 2025

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 07, 2014	US,8623235,B2   US8623235B2	GRANTED PATENT AS SECOND PUBLICATION
January 13, 2011	US,20110006248,A1   US20110006248A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8623235

Block copolymer oil return agents

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Abstract

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The present invention relates to fluorine free polymeric oil-return agents that increase the miscibility of lubricants such as mineral oils and/or oxygenated lubricants with refrigerants in order to improve oil return and system performance of refrigeration systems. It was discovered that fluorine free block copolymers having a block compatible with the oil phase, and at least one block compatible with the refrigerant phase can effectively compatibilize lubricating oils with HFC and HFO refrigerants.

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Description

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Claims

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Claims data not available

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Legal Events

 

• LAPS2018
• STCH2018
• FP2018
• FEPP2017
• I2014
• P2011
• AS2010
• F2009
• PD2008

Date	Code	Event	Description
Feb 05, 2018	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES	free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.)
Feb 05, 2018	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jan 07, 2018	FP	EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jan 07, 2018
Aug 18, 2017	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.)
Jan 07, 2014	I	Issuance
Jan 13, 2011	P	Published
Sep 01, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VAN HORN, BRETT L.;BERTELO, CHRISTOPHER A.;SCHMIDT, SCOTT C.;AND OTHERS;SIGNING DATES FROM 20100624 TO 20100628;REEL/FRAME:024923/0857 Owner name: ARKEMA INC., PENNSYLVANIA
Feb 18, 2009	F	Filing
Feb 29, 2008	PD	Priority Date