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gptkbp:instanceOf
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patent
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gptkbp:abstract
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A method for producing a composite material with improved properties.
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gptkbp:applicationNumber
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05/368,155
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gptkbp:applicationType
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Utility
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gptkbp:assignee
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gptkb:Hargreaves_Industries,_Inc.
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gptkbp:citedBy
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gptkb:US_4,123,456
US_5,678,901
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gptkbp:claims
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20
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gptkbp:class
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C08L 23/00
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gptkbp:country
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gptkb:United_States
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gptkbp:documentType
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Patent_Grant
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gptkbp:examiner
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gptkb:John_Doe
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gptkbp:fieldOfInvention
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composite materials
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gptkbp:filingDate
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January 10, 1974
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https://www.w3.org/2000/01/rdf-schema#label
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US 3,890,235 B2
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gptkbp:internationalClassification
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C08L23/00
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gptkbp:inventor
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gptkb:Robert_H._Hargreaves
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gptkbp:inventorResidence
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gptkb:California
gptkb:United_States
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gptkbp:issuedOn
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June 24, 1975
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gptkbp:language
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English
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gptkbp:legalStatus
|
Expired due to failure to pay maintenance fees.
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gptkbp:patentCitation
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Cited by 10 other patents.
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gptkbp:patentExpiration
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June 24, 1992
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gptkbp:patentFamily
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Hargreaves_Composite_Family
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gptkbp:patentField
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Material Science
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gptkbp:patentLink
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https://patents.google.com/patent/US3890235B2
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gptkbp:patentNumber
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3890235
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gptkbp:patentOffice
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gptkb:USPTO
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gptkbp:patentStatus
|
Expired
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gptkbp:patentType
|
Utility Patent
Filed under 35 U.S.C. 111.
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gptkbp:priorityDate
|
July 10, 1973
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gptkbp:publicationDate
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June 24, 1975
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gptkbp:relatedPatent
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gptkb:US_3,890,234_B2
gptkb:US_3,890,236_B2
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gptkbp:status
|
expired
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gptkbp:subclass
|
C08L 23/06
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gptkbp:title
|
Method of making a composite material
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