Patents by Inventor Kil-Wan Chang

Kil-Wan Chang 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: 20240084145
    Abstract: Disclosed are a pearlescent pigment and a preparation method therefor, wherein the pigment has a multilayered structure including a low-refractive index material layer between high-refractive index material layers on a glass flake substrate and thus has high color intensity, various colors depending on the viewing angle, and an improved sparkling effect. The pearlescent pigment according to the present invention comprises: a glass flake substrate having a D10 value of 40-80 ?m, a D50 value of 160-250 ?m, and a D90 value of 350-600 ?m and a thickness of 500 nm or more; and a metal oxide layer coated on the substrate, the metal oxide layer having a structure of a first metal oxide layer/an intermediate oxide layer containing MgO·SiO2/a second metal oxide layer.
    Type: Application
    Filed: June 28, 2022
    Publication date: March 14, 2024
    Inventors: Jae Il JEONG, Kwang Choong KANG, Byung Ki CHOI, Kwang Soo LIM, Kil Wan CHANG
  • Publication number: 20240052170
    Abstract: Disclosed in the present invention are near-infrared reflecting functional pigment, paint, and panel, especially, used for a vehicle pigment or the like. The pigment according to the present invention comprises: a platelet-like substrate; a first metal oxide layer coated on at least a portion of the substrate and having a refractive index of 1.8 or larger, and a second metal oxide layer coated on at least a portion of the first metal oxide layer and containing an absorbent material, wherein the pigment reflects on average at least 30% of an IR electron beam of 850-950 nm.
    Type: Application
    Filed: November 21, 2022
    Publication date: February 15, 2024
    Inventors: Dong-Min HEO, Jae-Il JEONG, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Publication number: 20240018360
    Abstract: A pigment composition according to an embodiment includes aluminum flakes coated with a plurality of metal oxide layers and TiO2 coated with a metal oxide layer, thus having explosion stability. The pigment composition may be prepared by mixing with TiO2 coated with a metal oxide layer having lower apparent specific gravity as compared to other plate-shaped inorganic particles. The pigment composition can have stability against a thermite reaction by aluminum and metal oxides while preventing deterioration of saturation and opacity.
    Type: Application
    Filed: October 25, 2021
    Publication date: January 18, 2024
    Inventors: Nam-Il LEE, Min-Jae KIM, Jang-Hun HAN, Yun-Seok JANG, Dae-Ho SHIN, Kum-Sung CHO, Kil-Wan CHANG, Kwang-Soo LIM, Byung-Ki CHOI, Kwang-Choong KANG
  • Publication number: 20230077579
    Abstract: A composite powder according to an embodiment of the present disclosure has excellent UV blocking effect. The composite powder includes an ultraviolet ray-blocking coating layer containing ZnO on the surface of the plate-shaped substrate containing TiO2, thereby enabling the blocking of ultraviolet rays in the UVA and UVB regions, and is also expected to block fine dust through treatment with a silane compound or a silica compound.
    Type: Application
    Filed: March 31, 2021
    Publication date: March 16, 2023
    Inventors: Yong-Ho SON, Ki-Jung KIM, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Patent number: 11407900
    Abstract: A pearlescent pigment for security purposes according to an embodiment of the present invention includes a single or a plurality of coating layers containing a metal oxide and an organic or inorganic fluorescent material. Since the pearlescent pigment for security purposes according to the present disclosure includes a fluorescent layer containing the organic or inorganic fluorescent material, it can be used as a pigment for security purposes due to its optical characteristics and can also provide effects such as magnetism, high color intensity, multiple colors, etc. Also, since the pearlescent pigment for security purposes has aesthetic benefit and security characteristic at the same time, it is economical, easy to use and applicable in various industries.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 9, 2022
    Assignee: CQV CO., LTD.
    Inventors: Kum-sung Cho, Kyung-don Nam, Jae-il Jeong, Kwang-choong Kang, Byung-ki Choi, Kwang-soo Lim, Kil-wan Chang
  • Patent number: 11370923
    Abstract: The present invention relates to a technology for producing a black pearlescent pigment for cosmetics which is a human-friendly and nature-friendly by using a pigment including natural charcoal powder. The production method of the pearlescent pigment using natural charcoal according to the present invention includes (a) milling natural charcoal to produce a pigment including natural charcoal powder; and (b) coating a flake substrate with the produced pigment including the natural charcoal powder, wherein the milling is performed at 20 to 40 Hz for 24 to 72 hours, and an average particle size of the pigment including the natural charcoal powder is 100 to 300 nm.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 28, 2022
    Assignee: CQV CO., LTD.
    Inventors: Kum-Sung Cho, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Patent number: 11207264
    Abstract: A cosmetics composition having improved water absorbability and oil absorbability is provided. The cosmetics composition effectively controls sweat and sebum, thereby making it possible to improve persistence of make-up and to keep skin from looking dull.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: December 28, 2021
    Assignee: CQV CO., LTD.
    Inventors: Ki-Jung Kim, Sang-Hoon Kim, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Patent number: 11118060
    Abstract: Disclosed is a composite white pigment having mixed together white pigments having different colorimeter values from each other by comprising substrates having various sizes and/or TiO2 having various thicknesses. The composite white pigment, according to the present invention, comprises: a first white pigment comprising a substrate and a white metal oxide layer formed on the substrate; and a second white pigment comprising a substrate and a white metal oxide layer formed on the substrate, and having a different colorimeter value from that of the first white pigment.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: September 14, 2021
    Assignee: CQV CO., LTD.
    Inventors: Jin-Hyoung Lee, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Patent number: 10836912
    Abstract: Disclosed are a glossy pigment having a hollow structure and a method for producing the same. The glossy pigment having a hollow structure according to the present invention comprises: a hollow which penetrates through the center of the inside thereof; and a metal oxide coating layer which covers a part or all of the hollow, wherein the metal oxide coating layer has a hollow structure having a thickness of 0.1-3 ?m.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: November 17, 2020
    Assignee: CQV CO., LTD
    Inventors: Yong-Ho Son, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Publication number: 20200354579
    Abstract: A pearlescent pigment for security purposes according to an embodiment of the present invention includes a single or a plurality of coating layers containing a metal oxide and an organic or inorganic fluorescent material. Since the pearlescent pigment for security purposes according to the present disclosure includes a fluorescent layer containing the organic or inorganic fluorescent material, it can be used as a pigment for security purposes due to its optical characteristics and can also provide effects such as magnetism, high color intensity, multiple colors, etc. Also, since the pearlescent pigment for security purposes has aesthetic benefit and security characteristic at the same time, it is economical, easy to use and applicable in various industries.
    Type: Application
    Filed: September 19, 2018
    Publication date: November 12, 2020
    Inventors: Kum-sung CHO, Kyung-don NAM, Jae-il JEONG, Kwang-choong KANG, Byung-ki CHOI, Kwang-soo LIM, Kil-wan CHANG
  • Publication number: 20200337982
    Abstract: A cosmetics composition having improved water absorbability and oil absorbability is provided. The cosmetics composition effectively controls sweat and sebum, thereby making it possible to improve persistence of make-up and to keep skin from looking dull.
    Type: Application
    Filed: December 24, 2019
    Publication date: October 29, 2020
    Inventors: Ki-Jung KIM, Sang-Hoon KIM, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Patent number: 10646423
    Abstract: The present invention relates to a cosmetic product having an excellent UV-blocking effect and a manufacturing method thereof, in which the cosmetic product has an excellent UV-blocking effect, shows reduced whitening, has a good feeling in use, and good adhesion to the skin, and is not glossy and sticky after application to the skin, and to a manufacturing method thereof. The cosmetic product having an excellent UV-blocking effect according to the present invention includes: a cosmetic composition; and a hollow pearlescent pigment added to the cosmetic composition in an amount of 1 to 15 parts by weight based on 100 parts by weight of the cosmetic composition.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 12, 2020
    Assignee: CQV CO., LTD.
    Inventors: Ki-Jung Kim, Sang-Hoon Kim, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Publication number: 20200071534
    Abstract: Disclosed is a composite white pigment having mixed together white pigments having different colorimeter values from each other by comprising substrates having various sizes and/or TiO2 having various thicknesses. The composite white pigment, according to the present invention, comprises: a first white pigment comprising a substrate and a white metal oxide layer formed on the substrate; and a second white pigment comprising a substrate and a white metal oxide layer formed on the substrate, and having a different colorimeter value from that of the first white pigment.
    Type: Application
    Filed: March 27, 2018
    Publication date: March 5, 2020
    Inventors: Jin-Hyoung LEE, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Patent number: 10519317
    Abstract: A gold pigment is disclosed. The gold pigment according to the present disclosure includes a substrate; a first coating layer formed on a surface of the substrate and including a metal oxide having a refractive index of more than 1.8; a second coating layer formed on the first coating layer and including an oxide containing manganese; a third coating layer formed on the second coating layer and including a colorless metal oxide having a refractive index of 1.8 or less; a fourth coating layer formed on the third coating layer and including a metal oxide having a refractive index of more than 1.8; and a fifth coating layer formed on the fourth coating layer and including Fe2O3.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 31, 2019
    Assignee: CQV CO., LTD.
    Inventors: Kil-Wan Chang, Kwang-Soo Lim, Byung-Ki Choi, Jin-Hyoung Lee
  • Patent number: 10285918
    Abstract: Disclosed is a cosmetic composition capable of exhibiting various colors, including red, yellow and blue colors. The disclosed cosmetic composition comprises a red, yellow or blue pearlescent pigment prepared by coating a natural pigment on a matrix, so that it is capable of exhibiting various colors.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: May 14, 2019
    Assignee: CQV CO., LTD.
    Inventors: Kum-Sung Cho, Min Choi, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • Patent number: 10259943
    Abstract: Disclosed is a method for manufacturing plate ?-alumina pearlescent pigments and nano-metal coating pearlescent pigments with a large aspect ratio, having excellent reflectivity and capable of expressing various colors.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: April 16, 2019
    Assignee: CQV CO., LTD.
    Inventors: Myung-Ho Jung, Kyung-Jun Han, Jae-Il Jeong, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang, Jae-Soo Choi, Beom-Jae Lee, Jung-Min Lee
  • Publication number: 20190002703
    Abstract: The present invention relates to a technology for producing a black pearlescent pigment for cosmetics which is a human-friendly and nature-friendly by using a pigment including natural charcoal powder. The production method of the pearlescent pigment using natural charcoal according to the present invention includes (a) milling natural charcoal to produce a pigment including natural charcoal powder; and (b) coating a flake substrate with the produced pigment including the natural charcoal powder, wherein the milling is performed at 20 to 40 Hz for 24 to 72 hours, and an average particle size of the pigment including the natural charcoal powder is 100 to 300 nm.
    Type: Application
    Filed: October 23, 2017
    Publication date: January 3, 2019
    Applicant: CQV CO., LTD.
    Inventors: Kum-Sung CHO, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Publication number: 20180298198
    Abstract: Disclosed are a glossy pigment having a hollow structure and a method for producing the same. The glossy pigment having a hollow structure according to the present invention comprises: a hollow which penetrates through the center of the inside thereof; and a metal oxide coating layer which covers a part or all of the hollow, wherein the metal oxide coating layer has a hollow structure having a thickness of 0.1-3 ?m.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 18, 2018
    Inventors: Yong-Ho SON, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG
  • Publication number: 20180148576
    Abstract: A gold pigment is disclosed. The gold pigment according to the present disclosure includes a substrate; a first coating layer formed on a surface of the substrate and including a metal oxide having a refractive index of more than 1.8; a second coating layer formed on the first coating layer and including an oxide containing manganese; a third coating layer formed on the second coating layer and including a colorless metal oxide having a refractive index of 1.8 or less; a fourth coating layer formed on the third coating layer and including a metal oxide having a refractive index of more than 1.8; and a fifth coating layer formed on the fourth coating layer and including Fe2O3.
    Type: Application
    Filed: June 2, 2016
    Publication date: May 31, 2018
    Inventors: Kil-Wan CHANG, Kwang-Soo LIM, Byung-Ki CHOI, Jin-Hyoung LEE
  • Publication number: 20180049959
    Abstract: The present invention relates to a cosmetic product having an excellent UV-blocking effect and a manufacturing method thereof, in which the cosmetic product has an excellent UV-blocking effect, shows reduced whitening, has a good feeling in use, and good adhesion to the skin, and is not glossy and sticky after application to the skin, and to a manufacturing method thereof. The cosmetic product having an excellent UV-blocking effect according to the present invention includes: a cosmetic composition; and a hollow pearlescent pigment added to the cosmetic composition in an amount of 1 to 15 parts by weight based on 100 parts by weight of the cosmetic composition.
    Type: Application
    Filed: December 22, 2016
    Publication date: February 22, 2018
    Inventors: Ki-Jung KIM, Sang-Hoon KIM, Kwang-Choong KANG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG