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

Patent Owner(s)

Patent Owner	Address
YKK CORPORATION	CHIYODA-KU TOKYO 101-8642

International Classification(s)

• B21F:WORKING OR PROCESSING OF WIRE
• B21C:MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PR....
• C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
• B21D:WORKING OR PROCESSING OF SHEET METAL OR METAL TUBE....
• A44B:BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LI....
• C22C:ALLOYS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Fukuyama, Takahiro	Kurobe-shi, JP	10	40
Hiromi, Chikako	Kurobe-shi, JP	7	7
Kido, Kouta	Kurobe-shi, JP	5	14
Kumei, Takanori	Kurobe-shi, JP	3	4
Ogihara, Atsushi	Kurobe-shi, JP	61	164
Taira, Yoshio	Kurobe-shi, JP	4	7
Yokota, Muneyoshi	Kurobe-shi, JP	2	1

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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 18, 2028
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Aug 18, 2032

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: 2021/0045,502

COPPER ALLOY FASTENER ELEMENT AND SLIDE FASTENER

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