Patents by Inventor Inhee Lee

Inhee Lee 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: 9639107
    Abstract: A temperature insensitive sub-nA current reference is presented with pA-range power overhead. The main concept is to linearly reduce the gate voltage of a sub-threshold-biased MOSFET as temperature increases, in order to compensate for exponential dependence of drain current on temperature. For example, a MOSFET-only, 20 pA, 780 ppm/° C. current reference that consumes 23 pW is disclosed, marking the lowest reported power among current references. The circuit exploits sub-threshold-biased MOSFETs and a complementary-to-absolute temperature (CTAT) gate voltage to compensate for temperature dependency. The design shows high immunity to supply voltage of 0.58%/V and a load sensitivity of 0.25%/V.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: May 2, 2017
    Assignee: The Regents Of The University Of Michigan
    Inventors: David T. Blaauw, Dennis Sylvester, Myungjoon Choi, Inhee Lee, Taekwang Jang
  • Publication number: 20150268689
    Abstract: A temperature insensitive sub-nA current reference is presented with pA-range power overhead. The main concept is to linearly reduce the gate voltage of a sub-threshold-biased MOSFET as temperature increases, in order to compensate for exponential dependence of drain current on temperature. For example, a MOSFET-only, 20 pA, 780 ppm/° C. current reference that consumes 23 pW is disclosed, marking the lowest reported power among current references. The circuit exploits sub-threshold-biased MOSFETs and a complementary-to-absolute temperature (CTAT) gate voltage to compensate for temperature dependency. The design shows high immunity to supply voltage of 0.58%/V and a load sensitivity of 0.25%/V.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 24, 2015
    Inventors: David T. Blaauw, Dennis Sylvester, Myungjoon Choi, Inhee Lee, Taekwang Jang
  • Patent number: 9073830
    Abstract: Disclosed are a novel compound or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition including the same for inhibiting human 11-?-hydroxy steroid dehydrogenase type 1 (11?-HSD1). The disclosed compound and the pharmaceutical composition including the same for inhibiting human 11-?-hydroxy steroid dehydrogenase type 1 (11?-HSD1) are excellent in activity and solubility, and is more efficient in formulation and transfer.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: July 7, 2015
    Assignee: Hyundai Pharm Co., Ltd.
    Inventors: Inhee Lee, Doohyeok Pyeon, Myounghyeon Shin, Jeongun Hwang, Changmin Park, Sehoan Kim, Heeil Chae, Soonyoung Moon, Soyoun Kim, Jaekeol Rhee
  • Publication number: 20140206875
    Abstract: Disclosed are a novel compound or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition including the same for inhibiting human 11-?-hydroxy steroid dehydrogenase type 1 (11?-HSD1). The disclosed compound and the pharmaceutical composition including the same for inhibiting human 11-?-hydroxy steroid dehydrogenase type 1 (11?-HSD1) are excellent in activity and solubility, and is more efficient in formulation and transfer.
    Type: Application
    Filed: August 6, 2012
    Publication date: July 24, 2014
    Applicant: HYUNDAI PHARM CO., LTD.
    Inventors: Inhee Lee, Doohyeok Pyeon, Myounghyeon Shin, Jeongun Hwang, Changmin Park, Sehoan Kim, Heeil Chae, Soonyoung Moon, Soyoun Kim, Jaekeol Rhee
  • Patent number: 8723597
    Abstract: According to the present invention, a switched capacitor circuit comprises: an inverting amplifier for removing the offset by using a chopper stabilization circuit; a sampling unit which is connected between an input terminal and the inverting amplifier; and a feedback unit which is connected to the inverting amplifier in parallel.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: May 13, 2014
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Gunhee Han, Youngcheol Chae, Inhee Lee, Dongmyung Lee, Seunghyun Lim, Ji Min Cheon
  • Publication number: 20120229204
    Abstract: According to the present invention, a switched capacitor circuit comprises: an inverting amplifier for removing the offset by using a chopper stabilization circuit; a sampling unit which is connected between an input terminal and the inverting amplifier; and a feedback unit which is connected to the inverting amplifier in parallel.
    Type: Application
    Filed: July 12, 2010
    Publication date: September 13, 2012
    Applicant: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Gunhee Han, Youngcheol Chae, Inhee Lee, Dongmyung Lee, Seunghyun Lim, Ji Min Cheon
  • Patent number: 8057653
    Abstract: The present invention generally relates to carbon dioxide (CO2) sensors. In one embodiment, the present invention relates to a carbon dioxide (CO2) sensor that incorporates lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3). In another embodiment, the present invention relates to a carbon dioxide (CO2) sensor has a reduced sensitivity to humidity due to a sensing electrode with a layered structure of lithium carbonate and barium carbonate. In still another embodiment, the present invention relates to a method of producing carbon dioxide (CO2) sensors having lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3).
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: November 15, 2011
    Assignee: Ohio State Research Foundation
    Inventors: Prabir K. Dutta, Inhee Lee, Sheikh A. Akbar
  • Publication number: 20090095626
    Abstract: The present invention generally relates to carbon dioxide (CO2) sensors. In one embodiment, the present invention relates to a carbon dioxide (CO2) sensor that incorporates lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3). In another embodiment, the present invention relates to a carbon dioxide (CO2) sensor has a reduced sensitivity to humidity due to a sensing electrode with a layered structure of lithium carbonate and barium carbonate. In still another embodiment, the present invention relates to a method of producing carbon dioxide (CO2) sensors having lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3).
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Inventors: Prabir K. Dutta, Inhee Lee, Sheikh A. Akbar
  • Patent number: 7205418
    Abstract: The present invention relates to new process for preparing as a key chiral intermediate compound of formula (I) obtained from an epoxy-?-hydroxy carboxylic acid ester of formula (II) prepared from epoxide compound of formula (III), in which said compound of formula (I) is useful for preparing the therapeutic agent for hyperlipidemia, such as Astrovastatin and Fluvastatin. Wherein R1 denotes a hydrogen atom, alkyl, aryl or alkylaryl, R2 and R3 which can be identical or different, are a lower alkyl or phenyl and are capable of forming a six-membered ring, R4 stands for hydroxy, amino, alkylamino, azido, cyano, halogeno, aryloxy, alkyloxy, arylalkyloxy, alkyl, alkenyl, aryl, or aminomethyl, etc.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: April 17, 2007
    Assignee: Choongwae Pharma Corporation
    Inventors: Inhee Lee, Seungjoo Lee
  • Publication number: 20050148784
    Abstract: The present invention relates to new process for preparing as a key chiral intermediate compound of formula (I) obtained from an epoxy-?-hydroxy carboxylic acid ester of formula (II) prepared from epoxide compound of formula (III), in which said compound of formula (I) is useful for preparing the therapeutic agent for hyperlipidemia, such as Astrovastatin and Fluvastatin. Wherein R1 denotes a hydrogen atom, alkyl, aryl or alkylaryl, R2 and R3 which can be identical or different, are a lower alkyl or phenyl and are capable of forming a six-membered ring, R4 stands for hydroxy, amino, alkylamino, azido, cyano, halogeno, aryloxy, alkyloxy, arylalkyloxy, alkyl, alkenyl, aryl, or aminomethyl, etc.
    Type: Application
    Filed: August 13, 2002
    Publication date: July 7, 2005
    Inventors: Inhee Lee, Seungjoo Lee