Patents by Inventor Kyeong-il Oh

Kyeong-il Oh 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: 11309345
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and c is a mole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: April 19, 2022
    Assignees: SAMSUNG ELECTRONICS CO., LTD., DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Publication number: 20210057480
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and cis amole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Application
    Filed: November 6, 2020
    Publication date: February 25, 2021
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Patent number: 10854666
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and c is a mole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 1, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Publication number: 20190245003
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and c is a mole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Application
    Filed: December 21, 2018
    Publication date: August 8, 2019
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee