Fuel cell stack
US-2026094849-A1 · Apr 2, 2026 · US
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Doi Kensuke patents
Doi Kensuke is listed as an inventor on 16 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Doi Kensuke |
| Total patents | 16 |
| First publication | Feb 27, 2020 |
| Latest publication | Apr 2, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Fuel cell stack
US-2025357503-A1 · Nov 20, 2025 · US
Fuel cell stack
US-2025316723-A1 · Oct 9, 2025 · US
Single cell for fuel cell
US-2025246645-A1 · Jul 31, 2025 · US
Fuel cell stack
US-2025246646-A1 · Jul 31, 2025 · US
Fuel cell stack
US-2025055002-A1 · Feb 13, 2025 · US
Cover for internal combustion engine
US-12031476-B2 · Jul 9, 2024 · US
Cover for internal combustion engine
US-11821385-B2 · Nov 21, 2023 · US
Cover for internal combustion engine
US-11808234-B2 · Nov 7, 2023 · US
Cover for internal combustion engine
US-2023272759-A1 · Aug 31, 2023 · US
Recent patents
Latest publications not already listed above.
Cover for internal combustion engine
US-2023193850-A1 · Jun 22, 2023 · US
Cover for internal combustion engine
US-2022154637-A1 · May 19, 2022 · US
Chain cover
US-11242820-B2 · Feb 8, 2022 · US
Oil mist separator
US-10876448-B2 · Dec 29, 2020 · US
Chain cover
US-2020400095-A1 · Dec 24, 2020 · US
Oil mist separator
US-2020063619-A1 · Feb 27, 2020 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Toyota Boshoku Kk | 16 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| Y02E60/50 | 6 |
| F02B67/06 | 6 |
| F02F7/0073 | 6 |
| H01M8/0263 | 5 |
| H01M8/2483 | 4 |