US 3,890,213 B2

URI: https://gptkb.org/entity/US_3%2C890%2C213_B2
GPTKB entity
Statements (61)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for improving the efficiency of a chemical process.
gptkbp:applicationNumber US_05/370,123
gptkbp:applicationType Non-Provisional
gptkbp:assignee gptkb:Acme_Corporation
gptkbp:assigneeCountry gptkb:USA
gptkbp:citedBy gptkb:US_4,123,456
gptkbp:claims 10
gptkbp:class C01B
gptkbp:documentType Patent Document
gptkbp:examiner Jane_Smith
gptkbp:fieldOfInvention Chemical_Engineering
gptkbp:filedIn gptkb:United_States
gptkbp:filingDate 1974-06-14
https://www.w3.org/2000/01/rdf-schema#label US 3,890,213 B2
gptkbp:internationalClassification C01B 3/00
gptkbp:inventor gptkb:John_Doe
gptkbp:inventorCountry gptkb:USA
gptkbp:issueDate 1975-06-24
gptkbp:issuedBy gptkb:United_States_Patent_and_Trademark_Office
gptkbp:language English
gptkbp:legalStatus Lapsed
gptkbp:patentCitation gptkb:US_13,456,789
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gptkbp:patentClassification C01B 3/00
gptkbp:patentExpiration 1992-06-24
gptkbp:patentFamily US_3,890,213_B2,_US_3,890,212_B2
gptkbp:patentNumber 3890213
gptkbp:patentType Utility Patent
gptkbp:priorityDate 1973-06-14
gptkbp:relatedTo US_3,890,212_B2
gptkbp:status Expired
gptkbp:subclass C01B 3/00
gptkbp:title Method for improving efficiency of a process