{"number":"US12697444B2","kindCode":"B2","documentType":"grant","title":{"original":"Injection needle","english":"Injection needle"},"abstract":{"original":"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.","english":"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."},"applicants":["Kao Corporation"],"inventors":["Wataru HARIU","Takatoshi NIITSU","Tomoya NISHIMURA"],"filingDate":"2023-12-08","publicationDate":"2026-08-04","grantDate":"2026-08-04","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12697444B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12697444B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12697444B2","ja":"https://downloadpatent.com/ja/patent/US12697444B2"}}