Gas cartridge
US-D1091825-S · Sep 2, 2025 · US
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Ma Chuang patents
Ma Chuang is listed as an inventor on 4 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ma Chuang |
| Total patents | 4 |
| First publication | Sep 17, 2020 |
| Latest publication | Sep 2, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Adjustable face mask assembly and method of using the same
US-2023398382-A1 · Dec 14, 2023 · US
Filter, respirator, and method for manufacturing filter
US-2022249996-A1 · Aug 11, 2022 · US
Filtering mask with anti-counterfeit function
US-2020288795-A1 · Sep 17, 2020 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Honeywell Int Inc | 3 |
| Honeywell Safety Products Usa Inc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| A62B23/025 | 2 |
| A62B18/02 | 2 |
| A62B23/02 | 2 |
| A62B18/025 | 2 |
| D04H1/565 | 1 |