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

Patent Owner(s)

Patent Owner	Address
SANDVIK MINING AND CONSTRUCTION OY	FINLAND VANTAA SOUTHERN FINLAND
SANDVIK MINING AND CONSTRUCTION LYON SAS	19 AVENUE MARÉCHAL DE LATTRE DE TASSIGNY 69330 MEYZIEU FRANCE

International Classification(s)

• F42D:BLASTING
• E21B:EARTH OR ROCK DRILLING
• E21C:MINING OR QUARRYING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Barraud, Remy	Meyzieu, FR	1	1
Chavand, Sylvain	Meyzieu, FR	1	1
Demia, Laurent	Meyzieu, FR	13	32
Pourcenoux, Jerome	Columbus, FR	1	1

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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	Oct 23, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 23, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 23, 2035

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 23, 2024	US,11965726,B2   US11965726B2	GRANTED PATENT AS SECOND PUBLICATION
January 05, 2023	US,20230003498,A1   US20230003498A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 11965726

Rock drilling unit and method for charging drilled holes

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