Seishiro KOBAYASHI

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Plug, retaining member, and method for well completion using plug
- Patent number 12,000,232
- Issue date Jun 4, 2024
- Kureha Corporation
- Seishiro Kobayashi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Plug, retaining member, and method for well completion using plug
- Patent number 11,280,153
- Issue date Mar 22, 2022
- Kureha Corporation
- Seishiro Kobayashi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Plug, retaining member, and method for well completion using plug
- Patent number 11,066,895
- Issue date Jul 20, 2021
- Kureha Corporation
- Seishiro Kobayashi
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PLUG, RETAINING MEMBER, AND METHOD FOR WELL COMPLETION USING PLUG
- Publication number 20210317720
- Publication date Oct 14, 2021
- Kureha Corporation
- Seishiro KOBAYASHI
- E21 - EARTH DRILLING MINING
Information Patent Application
PLUG, RETAINING MEMBER, AND METHOD FOR WELL COMPLETION USING PLUG
- Publication number 20200386070
- Publication date Dec 10, 2020
- Kureha Corporation
- Seishiro KOBAYASHI
- E21 - EARTH DRILLING MINING
Information Patent Application
PLUG, RETAINING MEMBER, AND METHOD FOR WELL COMPLETION USING PLUG
- Publication number 20200190935
- Publication date Jun 18, 2020
- Kureha Corporation
- Seishiro KOBAYASHI
- E21 - EARTH DRILLING MINING