United States
US 12,697,444 B2
Injection needle
US 12,697,444 B2 is a granted patent from the United States Patent and Trademark Office (USPTO), dated 2026-08-04. Applicant: Kao Corporation. Its PDF downloads from this page without an account, up to 5 a day.
- Applicant
- Kao Corporation
- Inventors
- Wataru HARIU; Takatoshi NIITSU; Tomoya NISHIMURA
- Publication date
- 2026-08-04
- Filing date
- 2023-12-08
- Document type
- B2 Granted patent
- Also written as
- US 12,697,444 B2 · US12697444 · 12697444
Abstract
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.
The opening of the abstract. The full text is in the PDF.
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Patent office website: United States Patent and Trademark Office (USPTO)
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