Metal surface-treating agent, and metal material with coating film and method for manufacturing same
US-12540248-B2 · Feb 3, 2026 · US
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Otsu Yohei patents
Otsu Yohei is listed as an inventor on 3 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Otsu Yohei |
| Total patents | 3 |
| First publication | Dec 8, 2022 |
| Latest publication | Feb 3, 2026 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Nihon Parkerizing | 3 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09D7/63 | 3 |
| C09D7/61 | 3 |
| C09D129/04 | 3 |
| C08L29/04 | 3 |
| C09D5/08 | 3 |