US 3,890,346 B2

GPTKB entity

Properties (24)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a composite material with improved properties.
gptkbp:applicationDate April 12, 1973
gptkbp:applicationNumber 05/368,174
gptkbp:assignee gptkb:Hargreaves_Industries,_Inc.
gptkbp:citedBy gptkb:US_4,123,456
US_5,678,910
gptkbp:claims 20
gptkbp:class 428/423
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfInvention composite materials
https://www.w3.org/2000/01/rdf-schema#label US 3,890,346 B2
gptkbp:internationalClassification C08L 23/00
gptkbp:inventor gptkb:Robert_H._Hargreaves
gptkbp:issueDate June 24, 1975
gptkbp:issuedOn June 24, 1975
gptkbp:legalStatus granted
gptkbp:patentFamily Hargreaves_composite_patents
gptkbp:patentType utility
gptkbp:priorityDate August 1, 1973
gptkbp:relatedPatent gptkb:US_3,890,345_B2
US_3,890,347_B2
gptkbp:status active
gptkbp:title Method of making a composite material