美國
US 12,697,444 B2
Injection needle
US 12,697,444 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：Kao Corporation。PDF 可在本頁下載，未登入每天最多 5 篇。
- 申請人
- Kao Corporation
- 發明人
- Wataru HARIU; Takatoshi NIITSU; Tomoya NISHIMURA
- 公開日
- 2026-08-04
- 申請日
- 2023-12-08
- 文件種類
- B2 核准公告
- 也寫作
- US 12,697,444 B2 · US12697444 · 12697444
摘要
An injection needle includes: protrusions that protrude from a sheet base. The protrusions include a first protrusion having an opening at a tip end portion and being hollow, a second protrusion having no opening at a tip end portion; and an insertion depth controller provided at an intermediate position lower than a tip end position of the first protrusion and higher than a surface of the sheet base. A difference in height between the tip end position of the first protrusion and a position of the insertion depth controller is preferably 1 μm or more and 5 000 μm or less.
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專利局網站： 美國專利商標局（USPTO）