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

Patent Owner(s)

Patent Owner	Address
TINKERS & CHANCE	27760 SHERLOCK ROAD LOS ALTOS CA 94105

International Classification(s)

• G09B:EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCE....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Heit, Warren S	San Francisco, CA	33	663
# of filed Patents : 33 Total Citations : 663
Marcus, Brian I	San Francisco, CA	27	842
# of filed Patents : 27 Total Citations : 842

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Patent Citation Ranking

• 47 Citation Count
• G09B Class

• 88.30 % this patent is cited more than
• 23 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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 No: 6464503

Method and apparatus for interacting with a computer using a plurality of individual handheld objects

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Abstract

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A system where a child or other individual arranges one or more computer-recognizable characters on a working platform to spell words or provide a mathematical result in response to computer generated questions or prompts, the system then indicating whether the words or mathematical result is correct.

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Description

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Claims

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