Patents by Inventor Byoung gu Cho

Byoung gu Cho 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: 20110241024
    Abstract: Embodiments of the present invention provide an LED having a Wavelength Shift Layer (WSL) and method of manufacture. Specifically, under embodiment of the present invention, a WSL layer is applied over an LED chip. The WSL itself typically comprises two layers: an adhesion layer applied over a set (at least one) of LED chips, and a conformal coating over the adhesion layer. The adhesion layer provides improved adhesive effect of the conformal coating to the LED chip(s). The conformal coating is comprised of a particular phosphor ratio that is determined based on a wavelength measurement of the underlying LED chip(s). Specifically, under the present invention, a wavelength of a light output by an LED chip(s) (e.g., blue or ultra-violet (UV)) is measured (e.g., at the wafer level). Typically, the phosphor ratio of is comprised of at least one of the following colors: yellow, green, or red. Regardless, this conformal coating is applied over a glue layer that itself is applied over the LED chip.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Inventor: Byoung gu Cho
  • Publication number: 20110241023
    Abstract: The present invention provides a multichip LED and method of manufacture in which white light is produced. Specifically, a plurality of electrically interconnected LED chips (e.g., interconnected via red metal wire) is selected for conversion of light to white light. In a typical embodiment, the LED chips comprise: a blue LED chip, a red LED chip, a green LED chip, and a target LED chip whose light output is converted to white light. A wavelength of a light output by one or more of the plurality of chips will be measured. Based on the wavelength measurement, a conformal coating is applied to the one or more of the LED chips. The conformal coating has a phosphor ratio that is based on the wavelength. Moreover, the phosphor ratio is comprised of at least one of the following colors: yellow, green, or red. Using the conformal coating the light output of the target LED is then converted to white light.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Inventor: Byoung gu Cho
  • Patent number: 8017417
    Abstract: Embodiments of the present invention provide an LED having a Wavelength Shift Layer (WSL) and method of manufacture. Specifically, under embodiment of the present invention, a WSL layer is applied over an LED chip. The WSL itself typically comprises two layers: an adhesion layer applied over a set (at least one) of LED chips, and a conformal coating over the adhesion layer. The adhesion layer provides improved adhesive effect of the conformal coating to the LED chip(s). The conformal coating is comprised of a particular phosphor ratio that is determined based on a wavelength measurement of the underlying LED chip(s). Specifically, under the present invention, a wavelength of a light output by an LED chip(s) (e.g., blue or ultra-violet (UV)) is measured (e.g., at the wafer level). Typically, the phosphor ratio of is comprised of at least one of the following colors: yellow, green, or red. Regardless, this conformal coating is applied over a glue layer that itself is applied over the LED chip.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: September 13, 2011
    Assignee: Lightizer Korea Co.
    Inventor: Byoung gu Cho
  • Publication number: 20110188787
    Abstract: Disclosed are standing pouches for easy carriage and storage, the standing pouch including: an external pack; an internal pack which is disposed in the external pack to form a first temperature control space and a second temperature control space which are spaced from each other, to form a contents accommodating space between the first temperature control space and the second temperature control space to accommodate contents, and to enable the first temperature control space to communicate with the second temperature control space; and a first temperature control member and a second temperature control member which are respectively disposed in the first temperature control space and the second temperature control space, at least one of the first temperature control space and the second temperature control space having an open upper side to put a reactant liquid reacting with the first and second temperature control members to generate an exothermic or endothermic reaction.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 4, 2011
    Applicant: KSP CO., LTD.
    Inventors: Byoung-Chol CHO, Byoung-Gu CHO, Byung-kwon CHO
  • Publication number: 20110180055
    Abstract: The present invention provides a flameless, portable heating container. In a typical embodiment, the heating container contains a liquid activated heating material (e.g., in pack or disk form) and utilizes a recycled heating design. The design includes a set of chambers or compartments such a: a first compartment for holding a material to be heated; a second compartment containing an activation liquid; and a third compartment comprising a protrusion and a liquid activated heating material activated by the activation liquid, the protrusion being configured to puncture a divider between the second compartment and the third compartment so that the activation liquid contacts and activates the liquid activated heating material. It is understood that for the purposes of this disclosure, the terms chamber and compartment may be used interchangeably.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 28, 2011
    Inventors: Byung Chul Jo, Byoung Kwon Cho, Byoung Gu Cho
  • Publication number: 20110180829
    Abstract: The present invention provides an LED and method of manufacture in which white light is produced. Specifically, under the present invention, a wavelength of a light output by an LED (e.g., blue or ultra-violet (UV)) is measured (e.g., at the wafer level). Based on the wavelength measurement, a conformal coating is applied to the LED. The conformal coating has a phosphor ratio that is based on the wavelength. Moreover, the phosphor ratio is comprised of at least one of the following colors: yellow, green, or red. The light output of the LED is then converted to white light using the conformal coating. In a typical embodiment, these steps are performed at the wafer level so that uniformity and consistency in results can be better obtained. However, it should be understood that the same teachings could be applied at the chip level. Moreover, several different approaches can be implemented for isolating the coating area. Examples include the use of a paraffin wax, a silk screen, or a photo resist.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 28, 2011
    Inventor: Byoung gu Cho
  • Publication number: 20110083662
    Abstract: As indicated above, the present invention provides a flameless, portable heating kit. In a typical embodiment, the heat pack contains a liquid activated heating material (e.g., in pack form) and utilizes a recycled heat design. This design includes an opening between a heat chamber and a content chamber where the contents (materials to be heated such as food, or a packet containing food such as a Meal Ready to Eat (MRE)) are placed. The heat materials such as steam, air or liquid are transported through a controlled opening that transfers heat to the heat chamber. The present invention also provides a heat control method that uses a filter or filters that filter by-product materials such as moisture and channels the by-products outside, while keeping the heating liquid material inside of the heat space chamber. Optimal control of the heating (chemical) materials' temperature offers a safe heating experience.
    Type: Application
    Filed: November 10, 2009
    Publication date: April 14, 2011
    Inventors: Byung Chul Jo, Byoung Kwon Cho, Byoung GU Cho
  • Publication number: 20090025706
    Abstract: Disclosed is a temperature control pouch pack including: a first pack which is filled with a predetermined reaction fluid and a reaction material that react with each other to cause a certain reaction while isolating one of the reaction fluid and the reaction material from the other one; and a second pack which is disposed to exchange heat with the first pack and accommodates an article of which temperature is in need of control.
    Type: Application
    Filed: February 23, 2007
    Publication date: January 29, 2009
    Applicant: HARVEST CHARMFOODS CO., LTD.
    Inventors: Byoung-gu Cho, Byoung-kwon Cho