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Electron Source And Method For Manufacturing Same, And Emitter And Device Provided With Same

Patent No. EP4131328 (titled "Electron Source And Method For Manufacturing Same, And Emitter And Device Provided With Same") was filed by Denka on Apr 14, 2021. The application was issued on Aug 13, 2025.

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The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

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Aug 26, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 17, 2025
Decision to grant a European patent
Jul 2, 2025
(Electronic) Receipt
Jul 2, 2025
Filing of the translations of the claims
Jul 2, 2025
French translation of claims
Jul 2, 2025
German translation of the claims
Jul 2, 2025
Letter accompanying subsequently filed items
Mar 6, 2025
Annex to the communication about intention to grant a European patent
Mar 6, 2025
Bibliographic data of the European patent application
Mar 6, 2025
Communication about intention to grant a European patent
Mar 6, 2025
Intention to grant (signatures)
Mar 6, 2025
Text intended for grant (clean copy)
Mar 6, 2025
Text intended for grant (version for approval)
Dec 16, 2024
(Electronic) Receipt
Dec 16, 2024
Amended claims with annotations
Dec 16, 2024
Amended description with annotations
Dec 16, 2024
Claims
Dec 16, 2024
Description
Dec 16, 2024
Letter accompanying subsequently filed items
Dec 16, 2024
Reply to communication from the Examining Division
Aug 22, 2024
Annex to the communication
Aug 22, 2024
Communication from the Examining Division
Jun 12, 2024
(Electronic) Receipt
Jun 12, 2024
Amended claims with annotations
Jun 12, 2024
Amended description with annotations
Jun 12, 2024
Claims
Jun 12, 2024
Description
Jun 12, 2024
Letter accompanying subsequently filed items
Jun 12, 2024
Reply to communication from the Examining Division
Feb 21, 2024
Annex to the communication
Feb 21, 2024
Communication from the Examining Division
Feb 12, 2024
Examination started
Dec 22, 2023
(Electronic) Receipt
Dec 22, 2023
Amended claims filed after receipt of (European) search report
Dec 22, 2023
Amended claims with annotations
Dec 22, 2023
Amended description filed after receipt of (European) search report
Dec 22, 2023
Amended description with annotations
Dec 22, 2023
Amendments received before examination
Dec 22, 2023
Letter accompanying subsequently filed items
Jun 23, 2023
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jun 6, 2023
Communication regarding the transmission of the European search report
Jun 6, 2023
European search opinion
Jun 6, 2023
Information on Search Strategy
Jun 6, 2023
Supplementary European search report
May 15, 2023
Search started
Jan 11, 2023
Notification of forthcoming publication
Nov 8, 2022
Confirmation of effective date of early entry
Nov 7, 2022
Copy of the international preliminary report on patentability
Nov 7, 2022
Translation of the international preliminary report on patentability
Nov 4, 2022
Priority document (electronically transmitted)
Oct 27, 2022
(Electronic) Receipt
Oct 27, 2022
Abstract
Oct 27, 2022
Claims
Oct 27, 2022
Description
Oct 27, 2022
Drawings
Oct 27, 2022
Request for entry into the European phase
Sep 2, 2022
Information on entry into European phase
Nov 15, 2021
Priority document (electronically transmitted)
Oct 28, 2021
Copy of the international search report
Oct 28, 2021
Copy of the translated international search report
Oct 28, 2021
International publication pamphlet

EP4131328

DENKA

Application Number: EP21793715A
Filing Date: Apr 14, 2021
Status: Granted And Under Opposition; Jul 11, 2025
Publication Date: Aug 13, 2025
External Links: Slate, Register , Google Patents