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Country	kind	publication No.	Filing Date	Type	Sub-Type
JP	B2	JP5828846	Jan 25, 2012	Patent	Grant
Type : Patent Sub-Type : Grant
PUBLISHED GRANTED PATENT (SECOND LEVEL)		クロメン化合物		Dec 09, 2015
AU	A1	AU2012209701	Jan 25, 2012	Patent	Application
Type : Patent Sub-Type : Application
OPEN TO PUBLIC INSPECTION		Chromene compound		Jul 25, 2013
EP	B1	EP2669278	Jan 25, 2012	Patent	Grant
Type : Patent Sub-Type : Grant
Patent		CHROMENE COMPOUND		May 27, 2015
WO	A1	WO2012102409	Jan 25, 2012	Patent	Application
Type : Patent Sub-Type : Application
INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT		クロメン化合物		Aug 02, 2012

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

Patent Owner(s)

Patent Owner	Address
TOKUYAMA CORPORATION	1-1 MIKAGE-CHO SHUNAN-SHI YAMAGUCHI 7458648

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS
• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

• 2012 Application Filing Year
• C07D Class
• 4683 Applications Filed
• 3679 Patents Issued To-Date
• 78.57 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Izumi, Shinobu	Shunan-shi, JP	33	186
# of filed Patents : 33 Total Citations : 186
Momoda, Junji	Shunan-shi, JP	93	591
# of filed Patents : 93 Total Citations : 591
Takahashi, Toshiaki	Shunan-shi, JP	143	1689
# of filed Patents : 143 Total Citations : 1689
Takenaka, Junji	Shunan-shi, JP	41	114
# of filed Patents : 41 Total Citations : 114
Teranishi, Kazuhiro	Shunan-shi, JP	9	42
# of filed Patents : 9 Total Citations : 42

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Patent Citation Ranking

• 0 Citation Count
• C07D Class

• 0 % this patent is cited more than
• 11 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	Jul 30, 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

Full Text

US Patent Application No: 2014/0030,529

CHROMENE COMPOUND

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Abstract

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A chromene compound which develops a color of a neutral tint and has high color optical density, high fading speed and excellent durability and a photochromic curable composition comprising the chromene compound and polymerizable monomers.

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Description

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Claims

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