Mask apparatus
US-12582178-B2 · Mar 24, 2026 · US
This page is not indexed by search engines while we improve data quality.
An Dongkwon patents
An Dongkwon is listed as an inventor on 14 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | An Dongkwon |
| Total patents | 14 |
| First publication | Jan 19, 2023 |
| Latest publication | Mar 24, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Mask apparatus with rear surface inlet, outlet and filter assembly
US-12521579-B2 · Jan 13, 2026 · US
Mask apparatus
US-12465793-B2 · Nov 11, 2025 · US
Mask apparatus with filtered rear fan inlet
US-12453872-B2 · Oct 28, 2025 · US
Mask apparatus
US-2024042248-A1 · Feb 8, 2024 · US
Mask apparatus
US-2024042251-A1 · Feb 8, 2024 · US
Mask apparatus
US-2024042250-A1 · Feb 8, 2024 · US
Mask apparatus
US-2023015473-A1 · Jan 19, 2023 · US
Mask apparatus
US-2023021198-A1 · Jan 19, 2023 · US
Mask apparatus
US-2023018147-A1 · Jan 19, 2023 · US
Recent patents
Latest publications not already listed above.
Mask apparatus
US-2023020450-A1 · Jan 19, 2023 · US
Mask apparatus
US-2023019195-A1 · Jan 19, 2023 · US
Mask apparatus
US-2023013005-A1 · Jan 19, 2023 · US
Mask apparatus
US-2023021257-A1 · Jan 19, 2023 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Lg Electronics Inc | 14 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| A62B18/08 | 14 |
| A62B18/006 | 14 |
| A62B18/025 | 14 |
| A62B23/02 | 12 |
| A62B7/10 | 7 |