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gptkbp:instanceOf
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patent
|
|
gptkbp:abstract
|
A method for producing a composite material.
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gptkbp:applicationDate
|
August 17, 1982
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gptkbp:applicationNumber
|
06/408,174
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gptkbp:applicationType
|
non-provisional
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gptkbp:assignee
|
gptkb:McCulloch_Corporation
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gptkbp:citedBy
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gptkb:US_patent_5,000,000
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gptkbp:class
|
428/423
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gptkbp:country
|
gptkb:United_States
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gptkbp:documentType
|
patent document
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gptkbp:examiner
|
gptkb:John_Doe
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gptkbp:fieldOfUse
|
composite materials
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|
https://www.w3.org/2000/01/rdf-schema#label
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US patent 4,321,677
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gptkbp:internationalClassification
|
C08L 23/00
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gptkbp:inventor
|
gptkb:Robert_W._McCulloch
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gptkbp:inventorCountry
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gptkb:United_States
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gptkbp:issuedOn
|
April 6, 1982
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gptkbp:language
|
English
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gptkbp:legalStatus
|
granted
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gptkbp:numberOfClaims
|
10
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gptkbp:patentAssignee
|
gptkb:McCulloch_Corporation
|
|
gptkbp:patentCitation
|
gptkb:US_patent_4,000,000
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|
gptkbp:patentClassification
|
material science
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|
gptkbp:patentExpiration
|
April 6, 1999
expired patent
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gptkbp:patentFamily
|
US_patent_family
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gptkbp:patentField
|
engineering
materials engineering
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gptkbp:patentFilingDate
|
April 6, 1982
April 6, 1999
August 17, 1981
|
|
gptkbp:patentInventor
|
gptkb:Robert_W._McCulloch
|
|
gptkbp:patentNumber
|
4,321,677
|
|
gptkbp:patentOffice
|
gptkb:USPTO
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|
gptkbp:patentStatus
|
April 6, 1982
grant
patent granted.
expired.
expired patent.
public domain.
The patent is no longer in force.
can be used without permission.
failure to pay maintenance fees.
free to use.
no future legal protection.
no longer enforceable.
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gptkbp:patentType
|
utility patent
Utility patent for a method.
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gptkbp:priorArt
|
US_patent_3,500,000
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gptkbp:priorityDate
|
August 17, 1981
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gptkbp:relatedTo
|
composite manufacturing
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gptkbp:status
|
expired
|
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gptkbp:subclass
|
428/424
|
|
gptkbp:title
|
Method of making a composite material
|