US 4,000,081 A

GPTKB entity

Statements (22)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a composite material.
gptkbp:applicationNumber 05/575,198
gptkbp:assignee gptkb:Hargreaves_Industries,_Inc.
gptkbp:citedBy gptkb:US_4,123,456
US_4,567,890
gptkbp:claims 10
gptkbp:class 428/423
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfInvention composite materials
gptkbp:filingDate March 31, 1975
https://www.w3.org/2000/01/rdf-schema#label US 4,000,081 A
gptkbp:inventor gptkb:Robert_H._Hargreaves
gptkbp:issueDate December 28, 1976
gptkbp:issuedOn December 28, 1976
gptkbp:patentFamily US_4,000,081_A,_US_4,123,456,_US_4,567,890
gptkbp:patentType utility
gptkbp:priorityDate January 31, 1975
gptkbp:relatedTo US_3,456,789
gptkbp:status expired
gptkbp:subclass 428/424
gptkbp:title Method of making a composite material