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

Patent Owner(s)

Patent Owner	Address
SUMITOMO SEIKA CHEMICALS CO LTD	346-1 MIYANISHI HARIMA-CHO KAKO-GUN HYOGO 6750145
ADVANCED SOFTMATERIALS INC	TOKYO 113-0033

International Classification(s)

• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
• C08B:POLYSACCHARIDES; DERIVATIVES THEREOF
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• 2011 Application Filing Year
• C08G Class
• 1816 Applications Filed
• 1451 Patents Issued To-Date
• 79.91 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hamamoto, Shigeki	Hyogo, JP	21	117
# of filed Patents : 21 Total Citations : 117
Hayashi, Yuki	Chiba, JP	136	585
# of filed Patents : 136 Total Citations : 585
Iwata, Minoru	Chiba, JP	38	547
# of filed Patents : 38 Total Citations : 547
Okazaki, Hiroki	Hyogo, JP	18	87
# of filed Patents : 18 Total Citations : 87
Okazaki, Shinya	Hyogo, JP	23	78
# of filed Patents : 23 Total Citations : 78
Yamasaki, Tomoaki	Hyogo, JP	10	58
# of filed Patents : 10 Total Citations : 58
Zhao, Changming	Chiba, JP	14	148
# of filed Patents : 14 Total Citations : 148

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Patent Citation Ranking

• 6 Citation Count
• C08G Class

• 26.81 % this patent is cited more than
• 9 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	Aug 23, 2027

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
February 23, 2016	US,9266972,B2   US9266972B2	GRANTED PATENT AS SECOND PUBLICATION
February 27, 2014	US,20140058078,A1   US20140058078A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9266972

Polyrotaxane composition

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Abstract

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The present invention aims to provide a polyrotaxane composition having excellent storage stability. The present invention relates to a polyrotaxane composition comprising: a polyrotaxane containing a cyclodextrin, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol; and a polyphenol antioxidant.

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Description

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Claims

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Claims data not available

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Legal Events

 

• STCH2024
• LAPS2024
• FP2024
• FEPP2023
• MAFP2019
• I2016
• STCF2016
• ZAAB2015
• ZAAA2015
• P2014
• AS2013
• F2011
• PD2011

Date	Code	Event	Description
Apr 01, 2024	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 01, 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
Feb 23, 2024	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Feb 23, 2024
Oct 16, 2023	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jul 24, 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
Feb 23, 2016	I	Issuance
Feb 03, 2016	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Nov 25, 2015	ZAAB	NOTICE OF ALLOWANCE MAILED	free format text: ORIGINAL CODE: MN/=.
Nov 24, 2015	ZAAA	NOTICE OF ALLOWANCE AND FEES DUE	free format text: ORIGINAL CODE: NOA
Feb 27, 2014	P	Published
Oct 28, 2013	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMASAKI, TOMOAKI;OKAZAKI, SHINYA;OKAZAKI, HIROKI;AND OTHERS;REEL/FRAME:031605/0193 Owner name: ADVANCED SOFTMATERIALS INC., JAPAN Effective Date: Oct 28, 2013 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMASAKI, TOMOAKI;OKAZAKI, SHINYA;OKAZAKI, HIROKI;AND OTHERS;REEL/FRAME:031605/0193 Owner name: SUMITOMO SEIKA CHEMICALS CO., LTD., JAPAN Effective Date: Oct 28, 2013
Dec 05, 2011	F	Filing
Mar 14, 2011	PD	Priority Date