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

Patent Owner(s)

Patent Owner	Address
KUREHA CORPORATION	3-3-2 NIHONBASHI-HAMACHO CHUO-KU TOKYO 103-8552

International Classification(s)

• C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
• C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
EJIRI, Tetsuo	Tokyo, JP	10	45
HASEGAWA, Tomohisa	Tokyo, JP	12	270
MATSUZAKI, Mitsuhiro	Tokyo, JP	20	340
NOMURA, Shintaro	Tokyo, JP	14	88
SUZUKI, Yasuhiro	Tokyo, JP	445	4205

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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	Aug 22, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Aug 22, 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

Full Text

US Patent Application No: 2018/0051,153

HEAT-EXPANDABLE MICROSPHERES

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