|
gptkbp:instanceOf
|
patent
|
|
gptkbp:abstract
|
A method for producing a composite material.
|
|
gptkbp:applicationNumber
|
05/575,198
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|
gptkbp:applicationType
|
non-provisional
|
|
gptkbp:assignee
|
gptkb:Hargreaves_Industries,_Inc.
|
|
gptkbp:citedBy
|
US_5,000,000
|
|
gptkbp:claims
|
10
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|
gptkbp:class
|
428/423
|
|
gptkbp:documentType
|
patent document
|
|
gptkbp:examiner
|
gptkb:John_Doe
|
|
gptkbp:expirationDate
|
December 28, 1993
|
|
gptkbp:fieldOfUse
|
composite materials
|
|
gptkbp:filingDate
|
March 30, 1975
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
US 4,000,997
|
|
gptkbp:internationalClassification
|
C08L 23/00
|
|
gptkbp:inventor
|
gptkb:Robert_H._Hargreaves
|
|
gptkbp:inventorCountry
|
gptkb:United_States
|
|
gptkbp:issuedBy
|
December 28, 1976
|
|
gptkbp:language
|
English
|
|
gptkbp:legalStatus
|
lapsed
|
|
gptkbp:location
|
gptkb:United_States
|
|
gptkbp:maintenanceFee
|
paid
|
|
gptkbp:patentAbstract
|
yes
significant
composite technology
advanced composite materials.
|
|
gptkbp:patentCitation
|
yes
assigned
US_3,000,000
|
|
gptkbp:patentClassification
|
C08L
|
|
gptkbp:patentExpiration
|
yes
|
|
gptkbp:patentFamily
|
Hargreaves_composite_patents
|
|
gptkbp:patentField
|
materials science
|
|
gptkbp:patentInventor
|
composite material production method
|
|
gptkbp:patentMaintenanceFee
|
yes
|
|
gptkbp:patentNumber
|
4000997
|
|
gptkbp:patentOffice
|
gptkb:USPTO
|
|
gptkbp:patentOwner
|
gptkb:Hargreaves_Industries,_Inc.
|
|
gptkbp:patentStatus
|
expired
|
|
gptkbp:patentType
|
yes
Utility Patent
utility
|
|
gptkbp:priorityDate
|
April 30, 1975
|
|
gptkbp:publicationNumber
|
gptkb:US_4000997_A
|
|
gptkbp:relatedPatent
|
gptkb:US_4,000,998
|
|
gptkbp:status
|
expired
|
|
gptkbp:subclass
|
428/424
|
|
gptkbp:title
|
Method of making a composite material
|