OLEFINSULFONATE

European patent · EP4051756 · Deleted

Register entry

Publication number
EP4051756
Application number
EP20816667
Kind
European patent with effect for Switzerland and Liechtenstein
Status
Deleted
Specification
Granted
Filed
Oct 30, 2020
Published
Sep 7, 2022
Granted
Nov 15, 2023
Deleted
May 23, 2025
Reason
Annual fee unpaid
IPC classes
C09K 8/584 (2006.01)
C09K 8/60 (2006.01)
C09K 8/68 (2006.01)
C09K 8/70 (2006.01)
C09K 8/88 (2006.01)
E21B 43/16 (2006.01)
E21B 43/26 (2006.01)
Priority
US 201962929022 P 31.10.2019
PCT application
PCT/US2020/058329 30.10.2020
PCT publication
WO2021/087339 06.05.2021
Filing language
English
Source
Swissreg

History

What the Federal Institute of Intellectual Property published about this title, newest first.

  1. May 23, 2025

    Deleted, fee unpaid

    Status of protective title
    Active → Cancelled
    Cancellation date
    23.05.2025
    Cause for cancellation
    Non-payment of renewal fee

    Published in Swissreg on 23.05.2025

  2. Sep 25, 2024

    Change

    Published in Swissreg on 25.09.2024

  3. Jul 31, 2024

    Owner

    Owner
    Chevron U.S.A. Inc., 6001 Bollinger Canyon Road, San Ramon, CA 94583, USA, Chevron Oronite Company LLC, 6001 Bollinger Canyon Road, San Ramon, CA 94583, USA → Chevron U.S.A. Inc., 5001 Executive Parkway, San Ramon, CA 94583, USA, Chevron Oronite Company LLC, 5001 Executive Parkway, San Ramon, CA 94583, USA

    Published in Swissreg on 31.07.2024

  4. Nov 15, 2023

    Granted

    Published in Swissreg on 15.11.2023

Parties

Holder

Chevron U.S.A. Inc.

5001 Executive Parkway, San Ramon, CA 94583, US

Chevron Oronite Company LLC

5001 Executive Parkway, San Ramon, CA 94583, US

Inventor

CAMPBELL, Curtis, B.

San Ramon, CA 94583-0806, US

WANG, Ping

San Ramon, CA 94583-0806, US

DWARAKANATH, Varadarajan

San Ramon, CA 94583-0806, US

DAVIDSON, Andrew, M.

San Ramon, CA 94583-0806, US

THOMAS, Andrew, M.

San Ramon, CA 94583-0806, US

PINNAWALA, Gayani, W.

San Ramon, CA 94583-0806, 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.