Patents by Inventor Shin Hwan PARK

Shin Hwan PARK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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: 20230166417
    Abstract: Provided is a razor cartridge including: a first blade having a first base portion and a first cutting edge formed therein; a second blade disposed in front of the first blade to be adjacent to the first blade, and having a second base portion and a sliding edge therein; and a blade housing supporting the first base portion to have at least a portion of the first cutting edge exposed, and supporting the second base portion to have at least a portion of the sliding edge exposed, and the second blade is formed so that a ratio t3/t4 of a thickness t3 of the sliding edge to a thickness t4 of the second base portion is less than 1 and greater than a ratio t1/t2 of a thickness t1 of the first cutting edge to a thickness t2 of the first base portion.
    Type: Application
    Filed: November 23, 2022
    Publication date: June 1, 2023
    Inventors: Hyun Ju LEE, Shin Hwan PARK, Min Joo PARK
  • Publication number: 20230150156
    Abstract: A shaver according to an embodiment of the present invention for resolving issues comprises: a handle for gripping by a user; a power generation unit, attached to the handle, for generating rotational power; a power transmission unit which rotates by means of the rotational power generated in the power generation unit; a cartridge comprising a blade housing in which one or more blades are seated; and a power reception unit, on one surface of the cartridge so as to allow contact with the power transmission unit, for moving the blade housing linearly in accordance with the rotation of the power transmission unit, wherein the cartridge is coupled to the handle so as to allow pivoting around the pivot axis which is perpendicular to the rotational axis of the rotational power generated by the power generation unit, and the pivot axis is established so as to penetrate the power transmission unit.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 18, 2023
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK
  • Patent number: 11628580
    Abstract: The present invention relates to a razor including a handle, a frame coupled to the handle, a spacer, a top cap, a first blade secured between the frame and the spacer, and a second blade secured between the spacer and the top cap, wherein the first blade is supported by a portion of a top surface of the frame and a portion of a bottom surface of the spacer such that a first profile of the first blade is convexly curved upward, and wherein the second blade is supported by a portion of a top surface of the spacer and a portion of a bottom surface of the top cap such that a second profile of the second blade comprises a curved central region that is convexly curved upward and a pair of curved side regions that are concavely curved downward on opposite sides of the central region.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: April 18, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park
  • Patent number: 11613036
    Abstract: A razor assembly includes a razor cartridge including at least one shaving blade and a blade housing configured to receive the at least one shaving blade such that the at least one shaving blade extends in a first direction corresponding to a width direction of the razor cartridge. The razor assembly includes 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, the cartridge connector including at least two first cantilevers and at least one second cantilever. The razor assembly includes a razor handle coupled to the cartridge connector. The razor cartridge is configured such that when the razor cartridge rotates with respect to the cartridge connector, the two first cantilevers contact one side of the razor cartridge, and the second cantilever does not contact the razor cartridge.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: March 28, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Jae Joon Lee, Sung Hee Son, Shin Hwan Park, Sang Hun Park
  • Patent number: 11577416
    Abstract: A razor is provided, including a handle to be gripped by a user, a power generation unit disposed in the handle and configured to provide rotational power, a drive transmission unit coupled to the power generation unit and configured to be rotated by the rotational power, a cartridge including a blade housing on which one or more blades are seated, and a drive receiving unit formed at one side of the cartridge and configured to be in contact with the drive transmission unit to cause the blade housing to perform a linear movement in response to rotation of the drive transmission unit, wherein the cartridge is coupled to the handle such that the cartridge is pivotable about a pivot axis perpendicular to a rotational axis of the power generation unit, and wherein the pivot axis intersects the drive transmission unit.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: February 14, 2023
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park
  • Patent number: 11383397
    Abstract: A razor assembly includes a razor cartridge, a connector and a recovering force provider. The razor cartridge includes at least one shaving blade having a cutting edge, and a blade housing configured to receive the at least one shaving blade in a transverse direction. The connector is configured to extend in parallel with the transverse direction, and to be coupled to the blade housing so as to be pivotable around a pivot axis movable between a first rest position and a first position spaced apart from the first rest position in a first shaving direction. The recovering force provider includes a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position when the pivot axis is located between the first rest position and the first position.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: July 12, 2022
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park
  • Patent number: 11292143
    Abstract: The present disclosure provides a razor cartridge including at least one shaving blade having a cutting edge, a blade housing configured to accommodate the at least one shaving blade aligned in a transverse direction, a heated area formed at the blade housing, and comprising at least one heating pattern made of a conductive material, and a non-heated area formed at the blade housing made of a material different from the heated area, wherein the conductive material included in the at least one heating pattern is a conductive plastic or metallic material, and wherein the heated area is configured to generate heat by receiving electric power from a power supply.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: April 5, 2022
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park
  • Patent number: 11273564
    Abstract: A razor assembly includes a guide housing; a drive receiving member disposed on one side of the guide housing and movable in a first direction with respect to the guide housing; a blade housing disposed on another side of the guide housing; at least one shaving blade disposed at the blade housing; a razor handle extending from the guide housing; and a drive transmission member configured to transmit a driving force to the drive receiving member. The blade housing is configured to be moved with respect to the guide housing in a second direction that is not parallel to the first direction in response to movement of the drive receiving member in the first direction. The drive receiving member is further configured to be moved in the first direction with respect to the guide housing by the driving force transmitted from the drive transmission member.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: March 15, 2022
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park, Sang Hun Park
  • Publication number: 20220063120
    Abstract: A razor cartridge is disclosed. The present disclosure in at least one embodiment provides a razor cartridge including a blade housing and a lubrication member providing unit, wherein the blade housing is configured to accommodate at least one first shaving blade having a cutting edge and at least one second shaving blade having a cutting edge to lie in a longitudinal direction, the lubrication member providing unit is configured to provide a lubrication member, and the lubrication member providing unit is coupled to the blade housing so that the lubrication member is positioned between the first shaving blade and the second shaving blade.
    Type: Application
    Filed: August 12, 2021
    Publication date: March 3, 2022
    Applicant: DORCO CO., LTD.
    Inventors: Da Woon Han, Shin Hwan Park
  • Patent number: 10899028
    Abstract: A razor cartridge and a method for assembling a razor cartridge are disclosed. A razor cartridge includes: a blade housing including a seat configured to receive at least one blade; a pair of side caps respectively disposed at opposite ends of the blade housing, wherein each side cap is configured to be engaged with a corresponding end of the blade housing; and a plurality of bridges, wherein one or more bridges are disposed at each end of the blade housing and configured to provide a moveable connection between the side cap and the corresponding end of the blade housing, wherein the blade housing, the pair of side caps, and the one or more bridges are integrally formed, and wherein each side cap is configured to secure the at least one blade to the blade housing when the side cap is engaged with the corresponding end of the blade housing.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: January 26, 2021
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park, Sang Hun Park
  • Publication number: 20210008743
    Abstract: A razor assembly includes a razor cartridge including at least one shaving blade and a blade housing configured to receive the at least one shaving blade such that the at least one shaving blade extends in a first direction corresponding to a width direction of the razor cartridge; 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, the cartridge connector including at least two first cantilevers and at least one second cantilever; and a razor handle coupled to the cartridge connector, wherein the razor cartridge is configured such that when the razor cartridge rotates with respect to the cartridge connector, the at least two first cantilevers contact one side of the razor cartridge, and the at least one second cantilever does not contact the razor cartridge.
    Type: Application
    Filed: July 2, 2020
    Publication date: January 14, 2021
    Applicant: DORCO CO., LTD.
    Inventors: Jae Joon LEE, Sung Hee SON, Shin Hwan PARK, Sang Hun PARK
  • Publication number: 20200361105
    Abstract: The present disclosure provides a razor cartridge including at least one shaving blade having a cutting edge, a blade housing configured to accommodate the at least one shaving blade aligned in a transverse direction, a heated area formed at the blade housing, and comprising at least one heating pattern made of a conductive material, and a non-heated area formed at the blade housing made of a material different from the heated area, wherein the conductive material included in the at least one heating pattern is a conductive plastic or metallic material, and wherein the heated area is configured to generate heat by receiving electric power from a power supply.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 19, 2020
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK
  • Publication number: 20200346358
    Abstract: A razor assembly includes a guide housing; a drive receiving member disposed on one side of the guide housing and movable in a first direction with respect to the guide housing; a blade housing disposed on another side of the guide housing; at least one shaving blade disposed at the blade housing; a razor handle extending from the guide housing; and a drive transmission member configured to transmit a driving force to the drive receiving member. The blade housing is configured to be moved with respect to the guide housing in a second direction that is not parallel to the first direction in response to movement of the drive receiving member in the first direction. The drive receiving member is further configured to be moved in the first direction with respect to the guide housing by the driving force transmitted from the drive transmission member.
    Type: Application
    Filed: April 14, 2020
    Publication date: November 5, 2020
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK, Sang Hun PARK
  • Patent number: 10723031
    Abstract: The present disclosure relates to a razor cartridge with variable blade span(s), the razoar cartridge including a plurality of blades; a plurality of blade housings extended in a first direction and having seats configured to support the plurality of blades; a cartridge frame having one or more rails configured to support the plurality of blade housings such that the plurality of housings are movable along the one or more rails in a second direction perpendicular to the first direction; and a span adjusting shifter coupled to the plurality of blade housings and configured to cause the plurality of blade housings to move along the one or more rails in the second direction.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: July 28, 2020
    Assignee: DORCO CO., LTD.
    Inventors: Young Ho Park, Jae Joon Lee, Sung Hee Son, Shin Hwan Park
  • Publication number: 20200180178
    Abstract: A razor assembly includes a razor cartridge, a connector and a recovering force provider. The razor cartridge includes at least one shaving blade having a cutting edge, and a blade housing configured to receive the at least one shaving blade in a transverse direction. The connector is configured to extend in parallel with the transverse direction, and to be coupled to the blade housing so as to be pivotable around a pivot axis movable between a first rest position and a first position spaced apart from the first rest position in a first shaving direction. The recovering force provider includes a first recovering member configured to provide the connector with a recovering force for recovering the pivot axis to the first rest position when the pivot axis is located between the first rest position and the first position.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 11, 2020
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK
  • Publication number: 20190381681
    Abstract: A razor cartridge and a method for assembling a razor cartridge are disclosed. A razor cartridge includes: a blade housing including a seat configured to receive at least one blade; a pair of side caps respectively disposed at opposite ends of the blade housing, wherein each side cap is configured to be engaged with a corresponding end of the blade housing; and a plurality of bridges, wherein one or more bridges are disposed at each end of the blade housing and configured to provide a moveable connection between the side cap and the corresponding end of the blade housing, wherein the blade housing, the pair of side caps, and the one or more bridges are integrally formed, and wherein each side cap is configured to secure the at least one blade to the blade housing when the side cap is engaged with the corresponding end of the blade housing.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 19, 2019
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK, Sang Hun PARK
  • Publication number: 20190315009
    Abstract: The present disclosure relates to a razor cartridge with variable blade span(s), the razoar cartridge including a plurality of blades; a plurality of blade housings extended in a first direction and having seats configured to support the plurality of blades; a cartridge frame having one or more rails configured to support the plurality of blade housings such that the plurality of housings are movable along the one or more rails in a second direction perpendicular to the first direction; and a span adjusting shifter coupled to the plurality of blade housings and configured to cause the plurality of blade housings to move along the one or more rails in the second direction.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 17, 2019
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK
  • Publication number: 20190315006
    Abstract: A razor is provided, including a handle to be gripped by a user, a power generation unit disposed in the handle and configured to provide rotational power, a drive transmission unit coupled to the power generation unit and configured to be rotated by the rotational power, a cartridge including a blade housing on which one or more blades are seated, and a drive receiving unit formed at one side of the cartridge and configured to be in contact with the drive transmission unit to cause the blade housing to perform a linear movement in response to rotation of the drive transmission unit, wherein the cartridge is coupled to the handle such that the cartridge is pivotable about a pivot axis perpendicular to a rotational axis of the power generation unit, and wherein the pivot axis intersects the drive transmission unit.
    Type: Application
    Filed: November 21, 2016
    Publication date: October 17, 2019
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK
  • Publication number: 20190299439
    Abstract: The present invention relates to a razor including a handle, a frame coupled to the handle, a spacer, a top cap, a first blade secured between the frame and the spacer, and a second blade secured between the spacer and the top cap, wherein the first blade is supported by a portion of a top surface of the frame and a portion of a bottom surface of the spacer such that a first profile of the first blade is convexly curved upward, and wherein the second blade is supported by a portion of a top surface of the spacer and a portion of a bottom surface of the top cap such that a second profile of the second blade comprises a curved central region that is convexly curved upward and a pair of curved side regions that are concavely curved downward on opposite sides of the central region.
    Type: Application
    Filed: November 13, 2017
    Publication date: October 3, 2019
    Applicant: DORCO CO., LTD.
    Inventors: Young Ho PARK, Jae Joon LEE, Sung Hee SON, Shin Hwan PARK