System And Method For Cleaning Gas Paths In Gas Turbine Engines

Patent No. EP3805528 (titled "System And Method For Cleaning Gas Paths In Gas Turbine Engines") was filed by Rolls Royce on Sep 11, 2020. The application was issued on Aug 20, 2025.

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.

Date
Description

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Sep 2, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 24, 2025
Decision to grant a European patent
Jul 15, 2025
(Electronic) Receipt
Jul 15, 2025
French translation of claims
Jul 15, 2025
German translation of the claims
Jul 15, 2025
Letter accompanying subsequently filed items
Jun 24, 2025
Annex to the communication about intention to grant a European patent
Jun 24, 2025
Bibliographic data of the European patent application
Jun 24, 2025
Communication about intention to grant a European patent
Jun 24, 2025
Intention to grant (signatures)
Jun 24, 2025
Text intended for grant (clean copy)
Jun 24, 2025
Text intended for grant (version for approval)
Feb 13, 2024
(Electronic) Receipt
Feb 13, 2024
Amended claims with annotations
Feb 13, 2024
Amended description with annotations
Feb 13, 2024
Claims
Feb 13, 2024
Description
Feb 13, 2024
Letter accompanying subsequently filed items
Feb 13, 2024
Reply to communication from the Examining Division
Nov 30, 2023
Grant of extension of time limit (examination procedure)
Nov 27, 2023
(Electronic) Receipt
Nov 27, 2023
Letter accompanying subsequently filed items
Nov 27, 2023
Request for extension of time limit to communication from the Examining Division
Aug 3, 2023
Annex to the communication
Aug 3, 2023
Communication from the Examining Division
Jul 27, 2023
Examination started
Feb 21, 2023
Response to enquiry for communication from the Examining Division
Feb 8, 2023
(Electronic) Receipt
Feb 8, 2023
Enquiry as to the processing of the file
Feb 8, 2023
Letter accompanying subsequently filed items
Oct 14, 2021
(Electronic) Receipt
Oct 14, 2021
Amended claims filed after receipt of (European) search report
Oct 14, 2021
Amended claims with annotations
Oct 14, 2021
Amended description filed after receipt of (European) search report
Oct 14, 2021
Amended description with annotations
Oct 14, 2021
Amendments received before examination
Oct 14, 2021
Letter accompanying subsequently filed items
Apr 19, 2021
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Mar 17, 2021
Notification of forthcoming publication
Nov 27, 2020
Communication regarding the transmission of the European search report
Nov 27, 2020
European search opinion
Nov 27, 2020
European search report
Nov 27, 2020
Information on Search Strategy
Nov 10, 2020
Search started
Nov 4, 2020
Communication to designated inventor
Nov 4, 2020
Communication to designated inventor
Nov 4, 2020
Communication to designated inventor
Sep 16, 2020
Priority document (electronically transmitted)
Sep 11, 2020
Abstract
Sep 11, 2020
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Sep 11, 2020
Claims
Sep 11, 2020
Description
Sep 11, 2020
Designation of inventor
Sep 11, 2020
Drawings
Sep 11, 2020
Request for grant of a European patent

EP3805528

ROLLS ROYCE

Application Number: EP20195734A
Filing Date: Sep 11, 2020
Status: Granted And Under Opposition; Jul 18, 2025
Publication Date: Aug 20, 2025
External Links: Slate, Register , Google Patents

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System And Method For Cleaning Gas Paths In Gas Turbine Engines

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Dossier Documents

EP3805528