Fuel cell system
US-12597619-B2 · Apr 7, 2026 · US
This page is not indexed by search engines while we improve data quality.
Sakai Ryoji patents
Sakai Ryoji is listed as an inventor on 37 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Sakai Ryoji |
| Total patents | 37 |
| First publication | Sep 5, 2019 |
| Latest publication | Apr 7, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Fuel cell system
US-12580213-B2 · Mar 17, 2026 · US
Fuel cell system
US-12580211-B2 · Mar 17, 2026 · US
Fuel cell system
US-12407011-B2 · Sep 2, 2025 · US
Fuel cell system and method for charging and discharging control of electrical power storage device of fuel cell system
US-2025239636-A1 · Jul 24, 2025 · US
Vehicle system, vehicle control method, and storage medium
US-2024351571-A1 · Oct 24, 2024 · US
Control device, control method, and recording medium
US-12109886-B2 · Oct 8, 2024 · US
Control device, control method, and recording medium
US-11807106-B2 · Nov 7, 2023 · US
Power supply system, power supply method and non-transitory computer readable medium
US-11804614-B2 · Oct 31, 2023 · US
Fuel cell system
US-11791481-B2 · Oct 17, 2023 · US
Recent patents
Latest publications not already listed above.
Fuel cell system
US-2023317993-A1 · Oct 5, 2023 · US
Fuel cell system
US-2023317984-A1 · Oct 5, 2023 · US
Fuel cell system
US-2023253586-A1 · Aug 10, 2023 · US
Fuel cell system
US-11695141-B2 · Jul 4, 2023 · US
Fuel cell system and method for stopping power generation in fuel cell system
US-2023178768-A1 · Jun 8, 2023 · US
Power source system and power source system control method
US-11634035-B2 · Apr 25, 2023 · US
Fuel cell system
US-2022416279-A1 · Dec 29, 2022 · US
Fuel cell system, method of controlling fuel cell system, and storage medium
US-11522207-B2 · Dec 6, 2022 · US
Fuel cell system, control method therefor, and non-transitory computer-readable storage medium in which a program is stored
US-11498455-B2 · Nov 15, 2022 · US
Fuel cell system
US-2022320552-A1 · Oct 6, 2022 · US
Fuel cell system, method of controlling fuel cell system, and storage medium
US-11424464-B2 · Aug 23, 2022 · US
Fuel cell system
US-2022238899-A1 · Jul 28, 2022 · US
Fuel cell system
US-2022223883-A1 · Jul 14, 2022 · US
System, method of controlling system, and storage medium
US-11380921-B2 · Jul 5, 2022 · US
Power supply system, power supply method and non-transitory computer readable medium
US-2022123337-A1 · Apr 21, 2022 · US
Control device, control method, and recording medium
US-2021300187-A1 · Sep 30, 2021 · US
Control device, control method, and recording medium
US-2021300181-A1 · Sep 30, 2021 · US
Fuel cell vehicle
US-11097636-B2 · Aug 24, 2021 · US
Vehicle system, vehicle control method, and storage medium
US-2021129824-A1 · May 6, 2021 · US
System, method of controlling system, and storage medium
US-2021104757-A1 · Apr 8, 2021 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Honda Motor Co Ltd | 37 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| Y02E60/50 | 29 |
| Y02T90/40 | 25 |
| H01M2250/20 | 22 |
| Y02T10/70 | 21 |
| H01M8/04753 | 13 |