Title:
RAZOR BLADE
Document Type and Number:
WIPO Patent Application WO/2024/039156
Kind Code:
A1
Abstract:
A razor blade according to an embodiment of the present invention comprises a substrate having a cutting edge formed at the tip thereof, wherein the thickness (T4) of the substrate as measured at a distance of 4μm from the tip has a value of 1.00 to 1.70μm, the thickness (T250) of the substrate as measured at a distance of 250μm from the tip has a value of 44.00 to 60.56μm, preferably 47.5 to 60.56μm, the ratio of T4 to T250 is 0.032 or less, and the rate of increase of the thickness at a first section included in the region spaced 40 to 100μm apart from the tip is less than the rate of increase of the thickness at a second section included in the region spaced 100μm or greater apart from the tip.
Inventors:
LEE HYUN JU (KR)
JUNG HYUN KYU (KR)
LEE SEUNG KI (KR)
RYU KWANG CHOON (KR)
PARK MIN JOO (KR)
JUNG HYUN KYU (KR)
LEE SEUNG KI (KR)
RYU KWANG CHOON (KR)
PARK MIN JOO (KR)
Application Number:
PCT/KR2023/012011
Publication Date:
February 22, 2024
Filing Date:
August 14, 2023
Export Citation:
Assignee:
DORCO CO LTD (KR)
International Classes:
B26B21/54; B24B3/48; B26B21/40; C23C14/02; C23C16/02; C23C30/00
Foreign References:
| EP3895859A1 | 2021-10-20 | |||
| KR20210155639A | 2021-12-23 | |||
| US5088202A | 1992-02-18 | |||
| KR20170038055A | 2017-04-05 | |||
| JP2013220245A | 2013-10-28 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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