U.S. Patent 2,297,692

GPTKB entity

Properties (27)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A semiconductor amplifier using a semiconductor material.
gptkbp:applicationDate 1941-12-29
gptkbp:applicationNumber US_2,297,692
gptkbp:assignee Bell_Telephone_Laboratories,_Inc.
gptkbp:citedBy over 100 subsequent patents
gptkbp:claims multiple claims regarding semiconductor properties.
gptkbp:country gptkb:United_States
gptkbp:documentType patent document
gptkbp:field electrical engineering
gptkbp:fieldOfUse electronics
https://www.w3.org/2000/01/rdf-schema#label U.S. Patent 2,297,692
gptkbp:impact led to the development of modern transistors.
gptkbp:influencedBy previous work on vacuum tubes.
gptkbp:inventor Walter_H._Brattain
gptkbp:issuedOn September 22, 1942
gptkbp:legalStatus expired
gptkbp:patentClassification H01L
gptkbp:patentNumber 2,297,692
gptkbp:patentType utility
gptkbp:priorityDate 1941-12-29
gptkbp:relatedPatent U.S._Patent_2,404,078
gptkbp:relatedTo transistor technology
gptkbp:researchAreas solid-state physics
gptkbp:significance pioneering work in semiconductor devices
gptkbp:technology semiconductors
gptkbp:title Semiconductor Amplifier