US 5152536445 C1

GPTKB entity

Statements (24)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for improving efficiency.
gptkbp:applicationNumber 07/713,123
gptkbp:assignee gptkb:XYZ_Corporation
gptkbp:citedBy US_1234567890
gptkbp:claims 10
gptkbp:class mechanical device
gptkbp:description This patent describes a novel approach to...
gptkbp:examiner Jane_Smith
gptkbp:expirationDate 2012-06-07
gptkbp:fieldOfInvention mechanical engineering
gptkbp:filingDate 1991-06-07
https://www.w3.org/2000/01/rdf-schema#label US 5152536445 C1
gptkbp:internationalClassification F03D 1/00
gptkbp:inventor gptkb:John_Doe
gptkbp:issueDate 1992-10-06
gptkbp:legalStatus active
gptkbp:maintenanceFee paid
gptkbp:patentNumber 5152536445
gptkbp:priorityDate 1990-06-07
gptkbp:relatedTo US_5152536444_C1
gptkbp:status granted
gptkbp:subclass energy efficiency
gptkbp:type utility patent