US 4,000,138

GPTKB entity

Properties (51)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing hydrogen from water using a chemical reaction.
gptkbp:applicationDate May 5, 1975
gptkbp:applicationNumber 05/575,198
gptkbp:applicationType utility
gptkbp:assignee The_United_States_of_America_as_represented_by_the_Department_of_Energy
gptkbp:citedBy gptkb:US_4,123,456
US_4,567,890
gptkbp:classification C01B 3/00
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfUse energy production
gptkbp:filedIn May 5, 1975
gptkbp:grantDate December 28, 1976
https://www.w3.org/2000/01/rdf-schema#label US 4,000,138
gptkbp:inventor gptkb:Robert_H._McDonald
gptkbp:inventorCountry gptkb:USA
gptkbp:inventorResidence gptkb:California
gptkbp:issuedBy December 28, 1976
gptkbp:legalStatus expired
gptkbp:numberOfClaims 10
gptkbp:numberOfFigures 3
gptkbp:patentAbstract A method for producing hydrogen from water using a chemical reaction.
gptkbp:patentAssignee gptkb:USA
gptkb:Department_of_Energy
gptkbp:patentCitation gptkb:US_4,123,456
5
US 3,987,654
US_3,456,789
US_4,321,098
US_4,567,890
gptkbp:patentClassification C01B 3/00
gptkbp:patentExpiration December 28, 1996
gptkbp:patentFamily US_4,000,138_family
gptkbp:patentFamilyMembers 3
gptkbp:patentField chemical engineering
energy production
gptkbp:patentFilingDate December 28, 1976
May 5, 1975
gptkbp:patentInventor gptkb:USA
gptkb:Robert_H._McDonald
gptkbp:patentLength 20 years
gptkbp:patentNumber 4,000,138
gptkbp:patentOffice gptkb:USPTO
gptkbp:patentStatus active
expired
gptkbp:patentType granted
utility patent
gptkbp:priorityDate March 31, 1975
gptkbp:relatedTo hydrogen production technology
gptkbp:technicalField renewable energy
gptkbp:title Method for the production of hydrogen