US patent 3,900,000

GPTKB entity

Properties (34)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for producing a high temperature superconducting material.
gptkbp:applicationDate May 15, 1974
gptkbp:applicationNumber 05/469,155
gptkbp:applicationType non-provisional
gptkbp:assignee The_United_States_of_America_as_represented_by_the_Department_of_Energy
gptkbp:citedBy gptkb:US_patent_4,000,000
gptkbp:classification C01G 4/00
gptkbp:country gptkb:United_States
gptkbp:examiner gptkb:John_Doe
gptkbp:fieldOfUse superconductivity
gptkbp:fullText Available_in_the_USPTO_database.
https://www.w3.org/2000/01/rdf-schema#label US patent 3,900,000
gptkbp:inventor gptkb:Robert_H._McDonald
gptkbp:inventorCountry gptkb:USA
gptkbp:issuedOn August 26, 1975
gptkbp:legalStatus granted
gptkbp:numberOfClaims 10
gptkbp:patentAbstract Describes a method for creating superconducting materials.
gptkbp:patentCitation Referenced in multiple subsequent patents.
gptkbp:patentClassification H01B 1/00
gptkbp:patentExpiration August 26, 1995
gptkbp:patentFamily gptkb:US_patent_family_3,900,000
gptkbp:patentField materials science
gptkbp:patentLength 20 years
gptkbp:patentLink https://patents.google.com/patent/US3900000A/en
gptkbp:patentNumber 3,900,000
gptkbp:patentOffice gptkb:USPTO
gptkbp:patentType utility
gptkbp:priorityDate March 31, 1972
gptkbp:relatedTo high temperature superconductors
gptkbp:status expired
gptkbp:subclass C01G 4/02
gptkbp:title Method of making a high temperature superconducting material