Leonid Kovalev

Follow

Person

Astrakhan, RU

People

Patents Grantslast 30 patents

Information Patent Grant
Electromagnetic metal pipes protection device
- Patent number 11,908,619
- Issue date Feb 20, 2024
- Leonid Mikhaylovich Kovalev
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Downhole induction heater
- Patent number 11,053,775
- Issue date Jul 6, 2021
- Leonid Kovalev
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Electromagnetic metal pipes protection device
- Publication number 20230282403
- Publication date Sep 7, 2023
- SediFlo LLC
- Leonid Mikhaylovich KOVALEV
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Downhole induction heater
- Publication number 20200157918
- Publication date May 21, 2020
- Leonid Kovalev
- E21 - EARTH DRILLING MINING