US 4,890,147 B2

GPTKB entity

Properties (40)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for improving efficiency in mechanical systems.
gptkbp:applicationNumber 07/307,123
gptkbp:applicationPublicationNumber gptkb:US_4,890,147_A1
gptkbp:applicationType Non-Provisional
gptkbp:assignee gptkb:Acme_Corporation
gptkb:Los_Angeles
gptkbp:assigneeCountry gptkb:USA
gptkbp:citedBy US_5,123,456
gptkbp:claims 20
gptkbp:class Mechanics
gptkbp:country gptkb:United_States
gptkbp:examiner Jane_Smith
gptkbp:expirationDate January 2, 2007
gptkbp:fieldOfInvention Mechanical Engineering
gptkbp:filingDate September 15, 1989
https://www.w3.org/2000/01/rdf-schema#label US 4,890,147 B2
gptkbp:internationalClassification F03G
gptkbp:inventor gptkb:John_Doe
gptkb:New_York
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate January 2, 1990
gptkbp:issuedOn January 2, 1990
gptkbp:legalStatus Granted
gptkbp:maintenanceFee Paid
gptkbp:nonPatentCitation Journal_of_Mechanical_Engineering,_1989.
gptkbp:patentCitation US_4,567,890
gptkbp:patentClassification Class 123
gptkbp:patentExpiration 20 years from filing date.
gptkbp:patentFamily US_4,890,147_B2,_US_5,123,456
gptkbp:patentLink https://patents.google.com/patent/US4890147B2
gptkbp:patentNumber 4890147
gptkbp:patentOffice gptkb:USPTO
gptkbp:patentType Utility Patent
A patent for a new and useful process.
gptkbp:priorityDate March 15, 1988
gptkbp:relatedPatent US_4,567,890
gptkbp:status Active
gptkbp:subclass Energy Efficiency
gptkbp:title Method for improving efficiency