Patents Assigned to Dorco Co., Ltd.
  • Publication number: 20240025063
    Abstract: A razor assembly is disclosed herein. An embodiment of the present disclosure provides a razor assembly including at least one shaving blade having a cutting edge; a blade housing accommodating the at least one shaving blade to be placed in a longitudinal direction; a connector fixed to one side of the blade housing, the connector including a first connecting portion including a first surface; and a holder rotatably connected to the connector about a rotational axis parallel to the longitudinal direction, the holder including a second connecting portion including a second surface facing the first surface, wherein the connector and the holder are connected to each other by coupling of the first connecting portion and the second connecting portion, and wherein when the connector rotates with respect to the holder about the rotational axis, the first surface is configured to move with respect to the second surface along the second surface.
    Type: Application
    Filed: August 24, 2021
    Publication date: January 25, 2024
    Applicant: DORCO CO., LTD.
    Inventors: Woo Gyeong GO, Dong Il KIM
  • Patent number: 11858156
    Abstract: The lubricating strip for a razor cartridge includes a first layer including a first lubricating material having a first color; and a second layer disposed under the first layer and including a second lubricating material having a second color different from the first color. The first layer and the second layer are configured to form at least one boundary line, which is not parallel to a straight line along a width direction of the lubricating strip, on a cross-section of the lubricating strip cut in a direction perpendicular to a longitudinal direction of the lubricating strip; and define multiple shaving layers including a first shaving layer including the first layer, a second shaving layer including the first layer and the second layer, and a third shaving layer including the second layer, the multiple shaving layers being arranged along a straight line parallel to a height direction of the lubricating strip.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: January 2, 2024
    Assignee: Dorco Co., Ltd.
    Inventors: Doo Shik Kim, Tae Young Lee
  • Patent number: 11858158
    Abstract: The present disclosure provides an improvement to razor blade coating by a physical vapor deposition method, by forming a hard coating layer as a thin coating layer in which chromium boride, which is a nanocrystalline structure having high hardness, is dispersed in an amorphous mixture of chromium and boron, thereby improving the strength and hardness of the thin coating layer and securing the bonding force by chromium in the amorphous mixture between the hard coating layer and a blade substrate on which an edge of the razor blade is formed.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: January 2, 2024
    Assignee: DORCO CO., LTD.
    Inventors: Min Joo Park, Sung Hoon Oh, Seong Won Jeong
  • Publication number: 20230364818
    Abstract: A razor blade is provided. The razor blade includes a substrate including a substrate tip, and a first surface and a second surface extending from the substrate tip; and a coating, layered on the substrate, including an ultimate tip, and a first cutting surface and a second cutting surface extending from the ultimate tip and corresponding to the first surface and the second surface, respectively, wherein the first cutting surface includes a first facet extending from the ultimate tip and a second facet extending from the first facet, the second cutting surface includes a third facet extending from the ultimate tip and corresponding to the first facet and the second facet, a first line tangent to the first facet and a second line tangent to the second facet are not parallel, and the ultimate tip is deviated from a central line that divides the substrate in two and passes through the substrate tip.
    Type: Application
    Filed: September 3, 2021
    Publication date: November 16, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Min Joo PARK, Hyun Kyu JUNG, Seong Won JEONG, Myoung Jin KIM
  • Publication number: 20230364815
    Abstract: A razor cartridge is disclosed. According to an embodiment of the present disclosure, a razor cartridge is provided, the razor cartridge including at least one shaving blade having a cutting edge extending in a longitudinal direction; an upper surface on which the cutting edge is exposed; a bottom surface opposite the upper surface; and a pair of opening portions formed to penetrate the bottom surface from the upper surface in both side areas in the longitudinal direction.
    Type: Application
    Filed: August 24, 2021
    Publication date: November 16, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Woo Gyeong GO, Da Woon HAN
  • Publication number: 20230311352
    Abstract: A shaving blade is disclosed herein. An embodiment of the present disclosure provides a shaving blade including: a substrate including a cutting edge at which a sharp substrate tip is formed, wherein the substrate has a thickness T10 measured at a distance D10 that is 10 micrometers away from the substrate tip, the thickness T10 having a value between 3.18 micrometers and 3.66 micrometers, and a thickness T100 measured at a distance D100 that is 100 micrometers away from the substrate tip, the thickness T100 having a value between 14.82 micrometers and 18.85 micrometers.
    Type: Application
    Filed: May 28, 2021
    Publication date: October 5, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Hyun Ju LEE, Kwang Choon RYU, Myoung Jin KIM
  • Patent number: 11766796
    Abstract: A razor assembly includes a razor cartridge, a connecting head, a razor handle and a restoring force provider. The razor cartridge includes a blade housing for housing shaving blades in a first direction. The connecting head has one side detachably coupled to the razor cartridge. The razor handle includes a head adapter coupled to the connecting head to be rotatable about a rotational axis perpendicular to the first direction, and a grip extending from head adapter. The restoring force provider includes a first magnet disposed on another side of the connecting head which co-rotates with the connecting head about the rotational axis, and a second magnet disposed at a fixed position on the razor handle such that a magnetic force between the one or more first magnets and the one or more second magnets biases the connecting head toward a neutral rotation position with respect to the razor handle.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: September 26, 2023
    Assignee: Dorco Co., Ltd.
    Inventor: Junsoo Chang
  • Patent number: 11745370
    Abstract: A razor assembly is disclosed. The present disclosure in at least one embodiment provides a razor assembly, comprising: a cartridge including at least one blade; and a handle assembly, wherein the handle assembly includes: a heating bar disposed on the handle assembly; at least one induction coil which is disposed under the heating bar and configured to heat the heating bar in a contactless manner; and a grip portion.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: September 5, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Sejun Jang, Youngjin Lee, Sung Hee Son, Hyo Sun Ahn
  • Patent number: 11724411
    Abstract: Provided is a shaver including a cartridge and a handle body. The cartridge includes a cartridge body formed in a rectangular frame shape; a plurality of blades installed in the cartridge body in the side-to-side direction of the cartridge body, each of the blades having a front portion bent downward; pair of side fixation slots formed on left and right frames of the cartridge body, respectively, so as to fix the left and right ends of each blade; a supporter connecting upper and lower frames of the cartridge body; and an inside fixation slot formed on the supporter so as to fix a portion of each blade. The handle body is coupled to the cartridge body.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: August 15, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Byung Sun An
  • Publication number: 20230249371
    Abstract: According to one embodiment, a shaving blade includes a substrate having a cutting edge provided with a sharp substrate tip, wherein a thickness T16 of the substrate measured at a distance D16, which is 16 micrometers from the substrate tip, is in a range from 2.41 micrometers to 3.76 micrometers.
    Type: Application
    Filed: April 21, 2023
    Publication date: August 10, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Hyun Ju LEE, Kwang Choon RYU, Min Joo PARK
  • Publication number: 20230211516
    Abstract: A razor assembly includes a razor cartridge comprising at least one shaving blade, and a blade housing configured to receive the at least one shaving blade in a first direction; a cartridge connector coupled to the razor cartridge such that the razor cartridge is rotatable with respect to the cartridge connector about a rotational axis parallel to the first direction; and a razor handle, wherein the cartridge connector further comprises: at least two first cantilevers configured to provide a recovering force to the razor cartridge to restore the razor cartridge to a rest position; at least one second cantilever coupled to at least a part of the razor handle; and an upper wall covering the at least one second cantilever, wherein the at least one second cantilever is not exposed to an outside by the upper wall when viewed from a bottom side of the blade housing.
    Type: Application
    Filed: March 10, 2023
    Publication date: July 6, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Jae Joon LEE, Sung Hee SON, Shin Hwan PARK, Sang Hun PARK
  • Publication number: 20230202065
    Abstract: A razor cartridge is disclosed herein. An embodiment of the present disclosure provides a razor cartridge configured to be coupled to a razor handle and used, the razor cartridge including: at least one shaving blade having a cutting edge; a blade housing configured to accommodate the at least one shaving blade so that the at least one shaving blade is placed in a longitudinal direction, the blade housing including a top side to which the cutting edge is directed and a bottom side facing the top side; a support structure coupled to one side of the blade housing; and at least one first living hinge configured to connect at least a portion of the blade housing to at least a portion of the support structure.
    Type: Application
    Filed: May 21, 2021
    Publication date: June 29, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Dong Il KIM, Se Jun JANG, Eun Hye JO, Na Yeon YOO
  • Patent number: D989398
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: June 13, 2023
    Assignee: Dorco Co., Ltd.
    Inventor: Jun Park
  • Patent number: D995905
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: August 15, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Young Jin Lee, Jong Jin Jeong, Da Woon Han
  • Patent number: D995907
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: August 15, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Young Jin Lee, Jong Jin Jeong, Da Woon Han
  • Patent number: D995909
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: August 15, 2023
    Assignee: DORCO CO., LTD.
    Inventor: Namyoon Kong
  • Patent number: D1003135
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: October 31, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Seok Min Bae, Hyo Sun Ahn
  • Patent number: D1011619
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: January 16, 2024
    Assignee: Dorco Co., Ltd.
    Inventor: Namyoon Kong
  • Patent number: D1011620
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: January 16, 2024
    Assignee: Dorco Co., Ltd.
    Inventor: Namyoon Kong
  • Patent number: D1012367
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: January 23, 2024
    Assignee: Dorco Co., Ltd.
    Inventor: Namyoon Kong