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

Patent Owner(s)

Patent Owner	Address
NIPPON MICROMETAL CORPORATION	SAITAMA
NIPPON STEEL CHEMICAL & MATERIAL CO LTD	13-1 NIHONBASHI 1-CHOME CHUO-KU TOKYO 1030027 ?1030027

International Classification(s)

• B23K:SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLA....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
AKASHI, Keisuke	Saitama, JP	3	4
HOSHINO, Katsuhiko	Saitama, JP	1	0
KOBAYASHI, Takayuki	Tokyo, JP	235	2198
KOMORI, Kiyotsugu	Saitama, JP	1	0
MISAWA, Kensuke	Tokyo, JP	2	0
TANAKA, Masamoto	Tokyo, JP	18	134
YAMAMOTO, Sukeyoshi	Tokyo, JP	16	40
YAMAZAKI, Tsunekazu	Saitama, JP	1	0

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Feb 4, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Feb 4, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Feb 4, 2034

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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: 2022/0241,903

JUNCTION STRUCTURE, METHOD FOR MANUFACTURING JUNCTION STRUCTURE, AND SOLDER BALL

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