KLINGENABDECKUNG
European patent · EP4204657 · In force
Register entry
- Publication number
- EP4204657
- Application number
- EP21862727
- Kind
- European patent with effect for Switzerland and Liechtenstein
- Status
- In force
- Specification
- Granted
- Filed
- Aug 26, 2021
- Published
- Jul 5, 2023
- Granted
- Sep 17, 2025
- Protection ends at the latest
- Aug 25, 2041
- Next annual fee due
- Aug 31, 2026
- IPC classes
- E21B 10/567 (2006.01)E21B 10/32 (2006.01)E21B 10/43 (2006.01)E21B 10/62 (2006.01)E21B 10/42 (2006.01)E21B 10/55 (2006.01)E21B 12/04 (2006.01)
- Priority
- US 202063071188 P 27.08.2020
- PCT application
- PCT/US2021/047731 26.08.2021
- PCT publication
- WO2022/047017 03.03.2022
- Filing language
- English
- Source
- Swissreg
History
What the Federal Institute of Intellectual Property published about this title, newest first.
- Jul 29, 2026
Change
Published in Swissreg on 29.07.2026
- Sep 17, 2025
Granted
- Specification status
- Non-published patent application → Granted patent
- Status of protective title
- Initiated → Active
Published in Swissreg on 17.09.2025
Parties
Inventor
SONG, Huimin
Houston, Texas 77073, US
ZHANG, Youhe
Houston, Texas 77073, US
CHELLAPPA, Sudarsanam
Houston, Texas 77073, US
REN, Ting
Houston, Texas 77073, US
The register names each party by name and address. A holder or agent is linked to an organization where exactly one entity of the commercial register bears its name; the street of a party not so recognised is not shown here.