美國
US 12,696,943 B2
Mask
US 12,696,943 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：Shingo ISHIKAWA; Seiji TAGUCHI; KOKEN LTD.。PDF 可在本頁下載，未登入每天最多 5 篇。
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- 申請人
- Shingo ISHIKAWA; Seiji TAGUCHI; KOKEN LTD.
- 發明人
- Seiji TAGUCHI; Shingo ISHIKAWA
- 公開日
- 2026-08-04
- 申請日
- 2022-12-14
- 文件種類
- B2 核准公告
- 也寫作
- US 12,696,943 B2 · US12696943 · 12696943
摘要
A mask includes a filter portion that is formed of an air-permeable sheet material and covers at least a nose and a mouth in wearing; a substantially annular face-contacting body that is joined to the filter portion, and is in contact with at least a vicinity of the nose and a vicinity of the mouth on a face in wearing; and a hook string to be hooked around either a head or an ear so that the filter portion and the face-contacting body are worn to the face.…
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專利局網站： 美國專利商標局（USPTO）