Patents by Inventor Tu Lee

Tu 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: 8865093
    Abstract: A polymorph, a polymorph screening system, and a polymorph preparing and screening method are disclosed. The polymorph preparing and screening method includes the following steps: providing a plurality of substrates of different materials; causing an organic material to grow crystals on the plurality of substrates through solution-cooling crystallization process, so that a plurality of polymorphs with different characteristics are prepared; and screening the plurality of polymorphs prepared in the previous step to obtain polymorphs with desired characteristics.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: October 21, 2014
    Assignee: National Central University
    Inventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng, Pu-Yun Wang, Yu-Kun Lin
  • Patent number: 8653267
    Abstract: The present invention discloses a co-crystal compound of optical devices. The co-crystal compound is crystallized out with hydrogen bonding by a temperature fluctuation method after mixing small organic molecules without optoelectronic properties and organic molecules having heterocyclic rings with optoelectronic properties. The photoluminescence (PL) intensity of this hydrogen-bonded co-crystal compound according to the present invention can vary with a variety of the small organic molecules without optoelectronic properties, so as to modulate the PL intensity.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: February 18, 2014
    Assignee: National Central University
    Inventors: Tu Lee, Pu-Yun Wang
  • Publication number: 20130100981
    Abstract: The present invention provides a system and a method of detecting a sublimation point, preferably applied to organic molecules. The system of detecting a sublimation point comprises: a heater, a capillary device, a vacuum pump, an ultraviolet light source, a photography device, a digital vacuum meter and a needle valve. The system of detecting a sublimation point is suitable for detecting the sublimation point of an organic light emitting molecule such as tris(8-hydroxyquinolinato) aluminum (Alq3) and tris(phenylpyridine) iridium (Ir(ppy)3). The needle valve can be used for controlling air pressure to measure the sublimation point under different pressures. Advantageously, the required quantity of organic molecules can be below 1 mg, thus not only saving the organic molecules, but also detecting the sublimation point without contaminating apparatuses.
    Type: Application
    Filed: February 17, 2012
    Publication date: April 25, 2013
    Inventors: Tu LEE, Jwo-Huei Jou, Meng-Hsun Tsai, Yu-Ren Syue
  • Publication number: 20130060484
    Abstract: A method of establishing a database of gas molecules is disclosed. In this method, a metal-organic framework absorbs gas molecules of a guest material. Thereafter, after a predetermined time, the thermogravimetric analyzer (TGA) is utilized to make sure that the gas molecules have been adsorbed by the metal-organic framework. Finally, the metal organic framework with the gas molecules adsorbed thereon is analyzed by fluorescence spectrophotometer, and the light-emitting wavelength and waveform are recorded to establish a database of gas molecules.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 7, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Cheng-Hsin Liu, Hung-Lin Lee
  • Patent number: 8273873
    Abstract: A sucrose of a conformational polymorph and its manufacturing method are disclosed. The sucrose is a Form II sucrose having a melting point of 140-180° C., and furfuryl alcohol is added into a saturated sucrose solution by a reverse solution method, such that the saturated solution is recrystallized to form a new sucrose. The sucrose of this conformational polymorph has a melting point lower than the melting point of a general Form I sucrose, and the solubility of the Form II sucrose is different from the solubility of the Form I sucrose. Thus the Form II sucrose can be used as an excipient of medicines, sacrificial fiber blood vessel network structure for cell cultivations, or the manufacture of an optical interference wavy device. Since the hydrogen bonds in the molecular structure of the Form II sucrose and the Form I sucrose are different, the mechanoluminescence of the sucrose is affected.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: September 25, 2012
    Assignee: National Central University
    Inventors: Tu Lee, Gen-Da Chen
  • Patent number: 8263970
    Abstract: The present invention discloses a manufacturing method for an optical device having a solvate, comprising the following steps: providing a substrate, depositing a solute on the substrate, and placing the substrate in the vapor environment of a solvent such that the solvent and the solute on the substrate form a solvate exhibiting optical properties. Furthermore, the present invention provides an optical device having a solvate, which modulates the photoluminescence (PL) intensity of the optical device via the solvate. The optical device is obtained by means of the above-described manufacturing method.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: September 11, 2012
    Assignee: National Central University
    Inventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng
  • Patent number: 8202987
    Abstract: A new sucrose is obtained through the present invention. The new sucrose has a lower solubility and a lower melting point. Thus, the new sucrose has a higher stability. The new sucrose obtained through the present invention can be used as an added functionality excipient of drug in pharmaceutical industry. And the new sucrose can also be used in sugar and food industries.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: June 19, 2012
    Assignee: National Central University
    Inventors: Tu Lee, Yu-Sheng Lin
  • Patent number: 8134025
    Abstract: The present invention fabricates mesocrystals of organic and organo-metallic compounds. Supersaturated solutions are made with different sums of an organic or organo-metallic compound and the organic or organo-metallic compound is added with an excipient. Through a water bath, mesocrystals are obtained from the supersaturated solutions with well-faceted nucleation and growth. Different polymorphisms are induced with different ratios of enantiomers. And the dissolution rate for fabricating the API is enhanced.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 13, 2012
    Assignee: National Central University
    Inventors: Tu Lee, Chyong-Wen Zhang
  • Publication number: 20120035064
    Abstract: A polymorph, a polymorph screening system, and a polymorph preparing and screening method are disclosed. The polymorph preparing and screening method includes the following steps: providing a plurality of substrates of different materials; causing an organic material to grow crystals on the plurality of substrates through solution-cooling crystallization process, so that a plurality of polymorphs with different characteristics are prepared; and screening the plurality of polymorphs prepared in the previous step to obtain polymorphs with desired characteristics.
    Type: Application
    Filed: October 20, 2011
    Publication date: February 9, 2012
    Inventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng, Pu-Yun Wang, Yu-Kun Lin
  • Publication number: 20120009334
    Abstract: An organo-optoelectronic nanowire is fabricated. It is made through a one-step unit operation under a low temperature. An organo-optoelectronic template is obtained for the fabrication, whose idea is a bio-inspired one. The nanowire obtained has a high efficiency and a high surface area; and, heat generated on operation is easily emitted. Thus, the method has great potential for future use on optoelectronic devices.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 12, 2012
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Ming-Shiou Lin
  • Publication number: 20110213148
    Abstract: The present invention discloses a co-crystal compound of optical devices. The co-crystal compound is crystallized out with hydrogen bonding by a temperature fluctuation method after mixing small organic molecules without optoelectronic properties and organic molecules having heterocyclic rings with optoelectronic properties. The photoluminescence (PL) intensity of this hydrogen-bonded co-crystal compound according to the present invention can vary with a variety of the small organic molecules without optoelectronic properties, so as to modulate the PL intensity.
    Type: Application
    Filed: May 11, 2010
    Publication date: September 1, 2011
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Pu-Yun Wang
  • Publication number: 20110003983
    Abstract: A new sucrose is obtained through the present invention. The new sucrose has a lower solubility and a lower melting point. Thus, the new sucrose has a higher stability. The new sucrose obtained through the present invention can be used as an added functionality excipient of drug in pharmaceutical industry. And the new sucrose can also be used in sugar and food industries.
    Type: Application
    Filed: January 23, 2008
    Publication date: January 6, 2011
    Applicant: National Central University
    Inventors: Tu Lee, Yu-Sheng Lin
  • Publication number: 20100317845
    Abstract: A sucrose of a conformational polymorph and its manufacturing method are disclosed. The sucrose is a Form II sucrose having a melting point of 140-180° C., and furfuryl alcohol is added into a saturated sucrose solution by a reverse solution method, such that the saturated solution is recrystallized to form a new sucrose. The sucrose of this conformational polymorph has a melting point lower than the melting point of a general Form I sucrose, and the solubility of the Form II sucrose is different from the solubility of the Form I sucrose. Thus the Form II sucrose can be used as an excipient of medicines, sacrificial fiber blood vessel network structure for cell cultivations, or the manufacture of an optical interference wavy device. Since the hydrogen bonds in the molecular structure of the Form II sucrose and the Form I sucrose are different, the mechanoluminescence of the sucrose is affected.
    Type: Application
    Filed: September 21, 2009
    Publication date: December 16, 2010
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Gen-Da Chen
  • Publication number: 20100305320
    Abstract: A polymorph, a polymorph screening system, and a polymorph preparing and screening method are disclosed. The polymorph preparing and screening method includes the following steps: providing a plurality of substrates of different materials; causing an organic material to grow crystals on the plurality of substrates through solution-cooling crystallization process, so that a plurality of polymorphs with different characteristics are prepared; and screening the plurality of polymorphs prepared in the previous step to obtain polymorphs with desired characteristics.
    Type: Application
    Filed: September 29, 2009
    Publication date: December 2, 2010
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Shih-Chia Chang, Jen-Fan Peng, Pu-Yun Wang, Yu-Kun Lin
  • Publication number: 20100243996
    Abstract: The present invention discloses a manufacturing method for an optical device having a solvate, comprising the following steps: providing a substrate, depositing a solute on the substrate, and placing the substrate in the vapor environment of a solvent such that the solvent and the solute on the substrate form a solvate exhibiting optical properties. Furthermore, the present invention provides an optical device having a solvate, which modulates the photoluminescence (PL) intensity of the optical device via the solvate. The optical device is obtained by means of the above-described manufacturing method.
    Type: Application
    Filed: September 14, 2009
    Publication date: September 30, 2010
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: TU LEE, SHIH-CHIA CHANG, JEN-FAN PENG
  • Publication number: 20100233355
    Abstract: An organo-optoelectronic nanowire is fabricated. It is made through a one-step unit operation under a low temperature. An organo-optoelectronic template is obtained for the fabrication, whose idea is a bio-inspired one. The nanowire obtained has a high efficiency and a high surface area; and, heat generated on operation is easily emitted. Thus, the present invention has a great potential for future use on optoelectronic devices.
    Type: Application
    Filed: February 4, 2008
    Publication date: September 16, 2010
    Applicant: National Central University
    Inventors: Tu Lee, Ming-Shiou Lin
  • Publication number: 20100228049
    Abstract: The present invention fabricates mesocrystals of organic and organo-metallic compounds. Supersaturated solutions are made with different sums of an organic or organo-metallic compound and the organic or organo-metallic compound is added with an excipient. Through a water bath, mesocrystals are obtained from the supersaturated solutions with well-faceted nucleation and growth. Different polymorphisms are induced with different ratios of enantiomers. And the dissolution rate for fabricating the API is enhanced.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 9, 2010
    Applicant: National Central University
    Inventors: Tu Lee, Chyong-Wen Zhang
  • Publication number: 20100200391
    Abstract: Disclosed herein is a method of lowering the sublimation point of a small-molecular organic semiconducting material. The method comprises the steps of forming a suspension solution of the small-molecular organic semiconducting material in a polar solvent, and sonicating the suspension solution with an ultrasound wave under low temperature.
    Type: Application
    Filed: July 15, 2009
    Publication date: August 12, 2010
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Shih-Chia Chang
  • Publication number: 20100022798
    Abstract: The present invention discloses an ibuprofen amine salt and the synthesis thereof, and more particularly an ibuprofen amine salt yielded by the neutralization reaction of a racemic mixture of ibuprofen with tris(hydroxymethyl)aminomethane in a solution system of water and an organic solvent. Compared with racemic mixtures of ibuprofen, the ibuprofen amine salt has higher solubility and a higher melting point, thereby having better bioavailability and properties than racemic mixtures of ibuprofen during pharmaceutical processing. Further, the ibuprofen amine salts of the present invention are stable between pH 4 and 9 so that they can be more widely applied to medicines.
    Type: Application
    Filed: February 25, 2009
    Publication date: January 28, 2010
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tu Lee, Yeh-Wen Wang
  • Publication number: 20080275009
    Abstract: Disclosed are a method of treating cancer and/or other proliferative diseases comprising orally administering N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide or a salt thereof, and pharmaceutical compositions comprising N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide or a salt thereof. Also disclosed are N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide salts, as well as crystalline forms thereof.
    Type: Application
    Filed: July 7, 2008
    Publication date: November 6, 2008
    Applicant: Bristol-Myers Squibb Company
    Inventors: Ramakrishnan Chidambaram, George M. Derbin, Masaki Endo, Julia ZH Gao, Tu Lee, Rajeshwar Motheram, William Lawrence Parker, Victor W. Rosso, Sailesh A. Varia