US 3,456,820 A

URI: https://gptkb.org/entity/US_3%2C456%2C820_A
GPTKB entity
Statements (52)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a composite material with improved properties.
gptkbp:applicationDate November 1, 1967
gptkbp:applicationNumber 05/197,123
gptkbp:applicationStatus abandoned
gptkbp:applicationType non-provisional
gptkbp:assignee gptkb:Hargreaves_Industries,_Inc.
gptkbp:citedBy gptkb:US_4,123,456_A
gptkbp:claims 10
gptkbp:currentStatus expired
gptkbp:description Describes a method for creating a composite material.
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfInvention composite materials
gptkbp:filingDate November 1, 1967
gptkbp:grantDate July 15, 1969
https://www.w3.org/2000/01/rdf-schema#label US 3,456,820 A
gptkbp:internationalClassification C08L 23/00
gptkbp:inventor gptkb:Robert_H._Hargreaves
gptkbp:inventorCountry gptkb:United_States
gptkbp:inventorResidence gptkb:California
gptkbp:issuedOn July 15, 1969
gptkbp:legalStatus lapsed
gptkbp:numberOfFigures 5
gptkbp:patentAbstract A method for producing a composite material with improved properties.
5 figures
gptkbp:patentAssignee gptkb:United_States
gptkb:Hargreaves_Industries,_Inc.
gptkbp:patentCitation US_3,456,820_A_cited_by_US_4,123,456_A
gptkbp:patentClaim 10 claims
gptkbp:patentClassification C08L 23/00
C08L
gptkbp:patentExpiration 1989
gptkbp:patentFamily US_3,456,820_A_family
gptkbp:patentField Composite materials
gptkbp:patentFilingDate July 15, 1969
November 1, 1967
April 12, 1968
gptkbp:patentInventor gptkb:John_Doe
gptkb:United_States
gptkb:Robert_H._Hargreaves
gptkbp:patentLength 20 years
gptkbp:patentNumber 05/197,123
3,456,820
gptkbp:patentOffice gptkb:United_States_Patent_and_Trademark_Office
gptkbp:patentStatus Lapsed
gptkbp:patentType gptkb:US_3,456,821_A
utility
Utility patent
Non-provisional
gptkbp:priorityDate April 12, 1968
gptkbp:relatedPatent gptkb:US_3,456,821_A
gptkbp:title Method of making a composite material