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

Patent Owner(s)

Patent Owner	Address
NOVA CHEMICALS (INTERNATIONAL) S A	1700 FRIBOURG

International Classification(s)

• C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• 2016 Application Filing Year
• C08J Class
• 2510 Applications Filed
• 1585 Patents Issued To-Date
• 63.15 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Borse, Nitin	Calgary, CA	23	39
# of filed Patents : 23 Total Citations : 39
Ho, Kam Wah	Calgary, CA	4	13
# of filed Patents : 4 Total Citations : 13
Tikuisis, Tony	Calgary, CA	32	114
# of filed Patents : 32 Total Citations : 114

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• 0 Citation Count
• C08J Class

• 0 % this patent is cited more than
• 7 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 24, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 24, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
April 24, 2018	US,9951212,B2   US9951212B2	GRANTED PATENT AS SECOND PUBLICATION
August 11, 2016	US,20160229995,A1   US20160229995A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9951212

Stabilized polyethylene

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Abstract

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Polyethylene is often stabilized with the combination of a primary antioxidant (such as a hindered phenol, a hydroxylamine or a lactone) and a secondary antioxidant (such as a phosphonite, a monophosphite, or a diphosphite). The diphosphite additives are not completely compatible with 'linear' polyethylene. This results in 'blooming' of the diphosphite to the surface of the finished polyethylene part or polyethylene film. The use of a preblend of ethylene vinyl alcohol (EVOH) and diphosphite mitigates this problem.

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Description

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Claims

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Legal Events

 

• MAFP2021
• I2018
• STCF2018
• P2016
• F2016
• AS2016
• PD2012

Date	Code	Event	Description
Sep 24, 2021	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
Apr 24, 2018	I	Issuance
Apr 04, 2018	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Aug 11, 2016	P	Published
Apr 14, 2016	F	Filing
Apr 14, 2016	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TIKUISIS, TONY;HO, KAM WAH;BORSE, NITIN;SIGNING DATES FROM 20120329 TO 20120507;REEL/FRAME:038281/0097 Owner name: NOVA CHEMICALS (INTERNATIONAL) S.A., SWITZERLAND
Apr 24, 2012	PD	Priority Date