Patents by Inventor Jae Chul Ahn

Jae Chul Ahn 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).

  • Patent number: 11130877
    Abstract: Disclosed is a coating material for a coating layer of an injection mold, the coating material including 100 parts by weight of a resin composition and about 30 to 40 parts by weight of a curing agent. The resin composition includes an amount of about 40 to 50 wt % of a first acrylic resin, an amount of about 5 to 15 wt % of a second acrylic resin having a weight average molecular weight less than a weight average molecular weight of the first acrylic resin, an amount of about 10 to 15 wt % of a carbon component, an amount of about 0.5 to 2 wt % of a matting agent, an amount of about 0.1 to 0.3 wt % of a catalyst and an amount of about 20 to 35 wt % of a solvent, all the wt % are based on the total weight of the resin composition.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: September 28, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Noroo Bee Chemical Co., Ltd., Moltex Co., Ltd.
    Inventors: Kyeong Hoon Jang, In Soo Han, Dae Sik Kim, Jae Hyun An, Seul Yi, Ik Jin Jung, Ju Seong Park, Soon Joon Jung, Seung Sik Han, Jae Beom Ahn, Yong Chul Lee, Kie Moon Sung, Soon Gi Kim, Hak Soon Choi
  • Patent number: 10519312
    Abstract: The present invention relates to an ultra-thin black polyimide film and a method for preparing the same. The ultra-thin black polyimide film according to the present invention has a thickness of 8 ?m or less, and has not only an excellent gloss and a low light transmittance in the range of visible light, but also an excellent dimensional stability so as to be effectively used in products such as slim devices, coverlays, insulating films, or semiconductor devices, which need to have a good mechanical or thermal properties.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 31, 2019
    Assignee: SKC KOLON PI Inc.
    Inventors: Kil Nam Lee, Jae Chul Ahn, In Seok Oh, Sang Hak Lee, Jae Baek Lee, Hyun Jai Lim
  • Publication number: 20180346720
    Abstract: The present invention relates to an ultra-thin black polyimide film and a method for preparing the same. The ultra-thin black polyimide film according to the present invention has a thickness of 8 ?m or less, and has not only an excellent gloss and a low light transmittance in the range of visible light, but also an excellent dimensional stability so as to be effectively used in products such as slim devices, coverlays, insulating films, or semiconductor devices, which need to have a good mechanical or thermal properties.
    Type: Application
    Filed: September 29, 2017
    Publication date: December 6, 2018
    Applicant: SKC KOLON PI Inc.
    Inventors: Kil Nam LEE, Jae Chul AHN, In Seok OH, Sang Hak LEE, Jae Baek LEE, Hyun Jai LIM
  • Publication number: 20170330598
    Abstract: Provided is a method and system for creating and using a video tag. A method configured as a computer may include creating tagging information by connecting information about at least one partial playback section in an entire playback section of a video to a tag designated by a user; and storing the tagging information in association with the at least one partial playback section instead of storing the at least one partial playback section.
    Type: Application
    Filed: August 3, 2016
    Publication date: November 16, 2017
    Inventors: Byung Gyou Choi, Jae Chul Ahn, Song Hyun Park