US 03,890,142 B2

GPTKB entity

Statements (60)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a composite material with improved properties.
gptkbp:applicationNumber 05/368,155
gptkbp:applicationType Non-provisional
gptkbp:assignee gptkb:Hargreaves_Industries,_Inc.
gptkbp:citedBy gptkb:US_4,123,456
US_5,678,910
gptkbp:claims 10
gptkbp:class Composite materials
gptkbp:country gptkb:United_States
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfInvention composite materials
gptkbp:filingDate April 2, 1973
https://www.w3.org/2000/01/rdf-schema#label US 03,890,142 B2
gptkbp:internationalClassification C08L 23/00
gptkbp:inventor gptkb:Robert_H._Hargreaves
gptkbp:inventorResidence gptkb:California
gptkbp:issuedOn June 24, 1975
gptkbp:legalStatus gptkb:Smith_&_Associates
gptkbp:patentCitation gptkb:US_13,456,789
gptkb:US_9,012,345
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gptkbp:patentExpiration 1992
gptkbp:patentFamily Hargreaves_composite_patents
gptkbp:patentNumber 3890142
gptkbp:patentType Utility patent
gptkbp:priorityDate August 1, 1973
gptkbp:relatedPatent gptkb:US_03,890,141_B2
gptkb:US_03,890,143_B2
gptkbp:status expired
gptkbp:subclass Reinforced plastics
gptkbp:title Method of making a composite material