US 4,000,091 A

GPTKB entity

Properties (25)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a composite material with improved properties.
gptkbp:applicationNumber 05/575,198
gptkbp:applicationType non-provisional
gptkbp:assignee gptkb:Hargreaves_Industries,_Inc.
gptkbp:citedBy gptkb:US_4,123,456_A
gptkb:US_4,567,890_A
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 4,000,091 A
gptkbp:internationalClassification C08L 23/00
gptkbp:inventor gptkb:Robert_H._Hargreaves
gptkbp:issueDate January 4, 1977
gptkbp:issuedOn January 4, 1977
gptkbp:patentFamily US_4,000,091_A,_US_4,000,090_A,_US_4,000,092_A
gptkbp:patentType utility
gptkbp:priorityDate January 4, 1974
gptkbp:relatedPatent gptkb:US_4,000,090_A
US_4,000,092_A
gptkbp:status expired
gptkbp:subclass 428/424
gptkbp:title Method of making a composite material