Patents Assigned to STEK CO., LTD
  • Publication number: 20230230867
    Abstract: A pre-aligner includes a base, a rotating unit, a platform and a sensing unit. The rotating unit includes a motor and an axle. The motor is inserted in the base. The axle is rotated by the motor. The platform is coaxially connected to the axle and includes electrodes for generating an electrostatic field for attracting the substrate. The sensing unit includes a box and a sensor. The box is located on the base. The sensor is movable in the box to sense the orienting portion of the substrate.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 20, 2023
    Applicant: STEK CO., LTD.
    Inventor: Ming-Sheng Chen
  • Publication number: 20230227273
    Abstract: A loader includes a pre-aligner and a transporter. The pre-aligner includes a base, a moving mechanism, a platform and a sensing unit. The moving mechanism includes an axle inserted in the base. The platform is coaxially connected to the axle and formed with a fetching face operable for generating an electrostatic field to attract a substrate. The sensing unit is located on the base and operable for sensing an orienting portion of the substrate. The transporter includes a fork formed with a fetching face operable for generating an electrostatic field to attract the substrate.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 20, 2023
    Applicant: STEK CO., LTD.
    Inventor: Ming-Sheng Chen
  • Patent number: 11660847
    Abstract: The present invention relates to a protective film for a windshield of a vehicle, which can be installed on a curved portion of the windshield of the vehicle without a thermoforming process, thereby improving the workability of a worker, and improving impact resistance to effectively protect the windshield of the vehicle.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: May 30, 2023
    Assignee: STEK CO., LTD.
    Inventors: Changsuk Lee, Inhwan Oh, Subin Park
  • Patent number: 11447664
    Abstract: The present disclosure relates to a color wrapping film for a vehicle, which has an excellent impact resistance and excellent scratch restorability due to a base layer and a coating layer formed of a polyurethane-based material, and suppresses discoloration caused by an external environment by adding a color pigment to a separate layer.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: September 20, 2022
    Assignee: STEK CO., LTD.
    Inventors: Inhwan Oh, Subin Park, Seunghwan Baek
  • Patent number: 11123775
    Abstract: A substrate-cleaning apparatus includes a transmission unit, a wet cleaning unit and a dry cleaning unit. The transmission unit includes a movable clamp for clamping a substrate that includes a face without covering the face of the substrate. The wet cleaning unit includes a wiper and a liquid pump. The wiper includes a strip of cleaning cloth and an abutting element for pressing the cleaning cloth against the face of the substrate. The liquid pump sends cleaning liquid to the abutting element that in turn sends the cleaning liquid to the cleaning cloth when the abutting element presses the cleaning cloth against the face of the substrate. The dry cleaning unit includes a wiper comprising a strip of cleaning cloth for wiping dry the face of the substrate without leaving any water mark on the face.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 21, 2021
    Assignee: STEK CO., LTD
    Inventor: Ming-Sheng Chen
  • Patent number: 10345248
    Abstract: An optical system for inspecting a transparent plate includes a light source for casting incident light onto a face of the transparent plate so that there is a primary reflected light and secondary reflected light from the face of the transparent plate, a photo sensor for receiving light from the face of the transparent plate, and a blocking element for blocking the secondary reflected light while allowing the primary reflected light to reach the photo sensor.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 9, 2019
    Assignee: STEK CO. LTD
    Inventor: Ming-Sheng Chen
  • Patent number: 10241057
    Abstract: An optical screening device includes a box and a light source. The box includes two chambers. The first chamber includes an incident passageway made with an exit. The second chamber includes a reflection passageway made with an entrance and an exit. The light source is inserted in the first chamber and adapted for casting incident light onto a first face of an inspected object located out of the box through the exit of the incident passageway so that primary reflected light goes into the second chamber from the first face of the inspected object via the entrance of the reflection passageway and goes out of the second chamber through the exit of the reflection passageway. The entrance of the reflection passageway is made with small width to allow only the primary reflected light to enter the second chamber.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: March 26, 2019
    Assignee: STEK CO., LTD
    Inventor: Ming-Sheng Chen