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gptkbp:instanceOf
|
patent
|
|
gptkbp:abstract
|
A method and apparatus for teaching reading using a computer.
|
|
gptkbp:applicationNumber
|
07/688,155
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gptkbp:applicationType
|
Utility
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|
gptkbp:assignee
|
gptkb:Houghton_Mifflin_Company
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|
gptkbp:citedBy
|
gptkb:US_5638550_A
gptkb:US_5755050_A
US 6000280 A
US_5542030_A
US_5905860_A
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|
gptkbp:class
|
G09B 9/00
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|
gptkbp:country
|
gptkb:United_States
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gptkbp:documentType
|
Patent_Grant
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|
gptkbp:examiner
|
gptkb:John_Doe
|
|
gptkbp:fieldOfInvention
|
Education
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|
gptkbp:filingDate
|
April 16, 1991
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|
gptkbp:filingLocation
|
gptkb:USPTO
|
|
gptkbp:grantType
|
Full
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
US 5153580 A
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|
gptkbp:internationalClassification
|
G09B 9/00
|
|
gptkbp:inventor
|
gptkb:Robert_J._H._Houghton
|
|
gptkbp:issuedOn
|
October 6, 1992
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gptkbp:language
|
English
|
|
gptkbp:legalStatus
|
Granted
|
|
gptkbp:numberOfClaims
|
20
|
|
gptkbp:numberOfFigures
|
5
|
|
gptkbp:patentAssignee
|
gptkb:Houghton_Mifflin_Company
|
|
gptkbp:patentCitation
|
Cited by 10
|
|
gptkbp:patentExpiration
|
2012-10-06
|
|
gptkbp:patentFamily
|
US_5153580_A,_US_5542030_A,_US_5638550_A
|
|
gptkbp:patentInventor
|
gptkb:Robert_J._H._Houghton
|
|
gptkbp:patentNumber
|
5153580
|
|
gptkbp:priorityDate
|
January 2, 1991
|
|
gptkbp:publications
|
A
|
|
gptkbp:relatedTo
|
gptkb:US_5153582_A
gptkb:US_5153581_A
|
|
gptkbp:status
|
Expired
|
|
gptkbp:subclass
|
G09B 9/02
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|
gptkbp:title
|
Method and apparatus for teaching reading
|