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

Patent Owner(s)

Patent Owner	Address
ZERO LAB CO LTD	TOKYO 150-0013

International Classification(s)

• G06F:ELECTRIC DIGITAL DATA PROCESSING
• H01F:MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF M....
• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Koga, Ritsuo	Tokyo, JP	11	104
# of filed Patents : 11 Total Citations : 104

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• G06F Class

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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	Aug 15, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Aug 15, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Aug 15, 2035

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Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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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: 2024/0053,833

Magnetic Sheet, Magnetic Writing System, Drawing Method, and Erasing Method

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Abstract

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A magnetic sheet includes a first sheet, a second sheet, and a number of microcapsules disposed between the first and the second sheets. Each microcapsule contains magnetic particles, clustered magnetic particles, non-magnetic particles, clustered non-magnetic particles, a suspending agent, and a solvent. The magnetic sheet is designed so that the magnetic particles reacting to a rotating magnetic line of force applied from a side of the first sheet rotate and move in a direction opposite to a direction of rotation of the magnetic line of force and aggregate near a center of the microcapsule to stay stationary.

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Description

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