Patents by Inventor Dong-Hwang Chen

Dong-Hwang Chen 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: 20140356278
    Abstract: A manufacturing method of hydrothermal generation of hydrogen is provided and includes steps of: providing an iron powder having a particle diameter from 100 nm to 10 mm; providing water of liquid status; mixing the iron powder and the water to form a mixture; and heating the mixture to the temperature between 100° C. and 200° C. to generate hydrogen. The hydrogen generated by the present invention could be used directly due to its high purity. The carbon dioxide would not be produced during the manufacturing process. The advantages of the present invention are that the manufacturing process will not cause environmental pollution and it is easy to carry out mass production.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 4, 2014
    Inventors: Dong-hwang CHEN, Yu-ching TSAI, Jan-antoni ROGUT
  • Patent number: 8834447
    Abstract: A transdermal drug delivery patch and a method of controlling the drug release of the transdermal drug delivery patch by near-IR are disclosed. The transdermal drug delivery patch comprises a substrate, carriers and drugs. The drugs are encapsulated in the carriers, and the carriers having the drugs are disposed on a surface of the substrate. The carriers are formed of biodegradable polymers, and nano-particles with a photothermal conversion effect are loaded in the carrier. When the carriers are punctured into the skin and the nano-particles in the carrier absorb the near-IR, the near-IR is converted into heat by the nano-particles to melt the carrier and thus releasing the drugs encapsulated in the carrier into the skin. Accordingly, the speed of releasing the drugs encapsulated in the carrier can be controlled accurately by the near-IR.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 16, 2014
    Assignee: National Cheng Kung University
    Inventors: Mei-Chin Chen, Dong-Hwang Chen, Kuan-Wen Wang, Bo-Hung Lai
  • Publication number: 20140147508
    Abstract: The present invention relates to a nano-carrier for an anticancer drug, which comprises: a metal nanoparticle; and a polynucleotide for connecting with an anticancer drug having a pyrimidine group or a purine group, wherein the polynucleotide is connected to a surface of the metal nanoparticle, and the anticancer drug is bound to the polynucleotide through the pyrimidine group or the purine group. In addition, the present invention also provides a complex of an anticancer drug and a nano-carrier, a pharmaceutical composition thereof, a method for manufacturing the complex, and a method for treating a cancer by using the pharmaceutical composition.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Applicant: National Cheng Kung University
    Inventors: Dar-Bin SHIEH, Chen-Sheng YEH, Dong-Hwang CHEN, Ya-Na WU, Ping-Ching WU
  • Patent number: 8673358
    Abstract: The present invention relates to a nano-carrier for an anticancer drug, which comprises: a metal nanoparticle; and a polynucleotide for connecting with an anticancer drug having a pyrimidine group or a purine group, wherein the polynucleotide connects to a surface of the metal nanoparticle, and the anticancer drug binds to the polynucleotide through the pyrimidine group or the purine group. In addition, the present invention also provides a complex of an anticancer drug and a nano-carrier, a pharmaceutical composition thereof, a method for manufacturing the complex, and a method for treating a cancer by using the pharmaceutical composition.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: March 18, 2014
    Assignee: National Cheng Kung University
    Inventors: Dar-Bin Shieh, Chen-Sheng Yeh, Dong-Hwang Chen, Ya-Na Wu, Ping-Ching Wu
  • Publication number: 20120283695
    Abstract: A transdermal drug delivery patch and a method of controlling the drug release of the transdermal drug delivery patch by near-IR are disclosed. The transdermal drug delivery patch comprises a substrate, carriers and drugs. The drugs are encapsulated in the carriers, and the carriers having the drugs are disposed on a surface of the substrate. The carriers are formed of biodegradable polymers, and nano-particles with a photothermal conversion effect are loaded in the carrier. When the carriers are punctured into the skin and the nano-particles in the carrier absorb the near-IR, the near-IR is converted into heat by the nano-particles to melt the carrier and thus releasing the drugs encapsulated in the carrier into the skin. Accordingly, the speed of releasing the drugs encapsulated in the carrier can be controlled accurately by the near-IR.
    Type: Application
    Filed: August 23, 2011
    Publication date: November 8, 2012
    Applicant: NATIONAL CHENG KUNG UNIVERSITY
    Inventors: MEI-CHIN CHEN, DONG-HWANG CHEN, KUAN-WEN WANG, BO-HUNG LAI
  • Publication number: 20120027861
    Abstract: The present invention relates to a nano-carrier for an anticancer drug, which comprises: a metal nanoparticle; and a polynucleotide for connecting with an anticancer drug having a pyrimidine group or a purine group, wherein the polynucleotide connects to a surface of the metal nanoparticle, and the anticancer drug binds to the polynucleotide through the pyrimidine group or the purine group. In addition, the present invention also provides a complex of an anticancer drug and a nano-carrier, a pharmaceutical composition thereof, a method for manufacturing the complex, and a method for treating a cancer by using the pharmaceutical composition.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: National Cheng Kung University
    Inventors: Dar-Bin Shieh, Chen-Sheng Yeh, Dong-Hwang Chen, Ya-Na Wu, Ping-Ching Wu
  • Patent number: 7547473
    Abstract: Magnetic nanoparticles and a method for producing the same are disclosed. A carboxylated polysaccharide with various functions such as chelating and ion exchange is covalently bound on the surfaces of magnetic nanoparticles. The polysaccharide-bound magnetic nanoparticles are highly stable, well dispersed, and have many advantages of high adsorption capacity, fast adsorption rate and easy magnetically manipulation. Hence, the polysaccharide-bound magnetic nanoparticles are applied to adsorb many ionic substances, and further act as an adsorbent for wastewater treatment or biochemical separation, a carrier for drugs or gene site-directed delivery, and a magnetic resonance imaging (MRI) contrast agent.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: June 16, 2009
    Assignee: National Cheng Kung University
    Inventors: Dong-Hwang Chen, Yang-Chuang Chang
  • Publication number: 20070116955
    Abstract: Magnetic nanoparticles and a method for producing the same are disclosed. A carboxylated polysaccharide with various functions such as chelating and ion exchange is covalently bound on the surfaces of magnetic nanoparticles. The polysaccharide-bound magnetic nanoparticles are highly stable, well dispersed, and have many advantages of high adsorption capacity, fast adsorption rate and easy magnetically manipulation. Hence, the polysaccharide-bound magnetic nanoparticles are applied to adsorb many ionic substances, and further act as an adsorbent for wastewater treatment or biochemical separation, a carrier for drugs or gene site-directed delivery, and a magnetic resonance imaging (MRI) contrast agent.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Applicant: National Cheng Kung University
    Inventors: Dong-Hwang Chen, Yang-Chuang Chang
  • Publication number: 20050288433
    Abstract: A method for preparing silver-containing polyesters includes: (a) preparing a reaction mixture of a carboxylic acid and an alcohol; (b) conducting esterification and polycondensation of the reaction mixture; and (c) adding a silver-containing agent into the reaction mixture so as to conduct the reduction of silver ions to silver particles in the reaction mixture.
    Type: Application
    Filed: June 24, 2005
    Publication date: December 29, 2005
    Applicant: EVEREST TEXTILE CO., LTD.
    Inventors: Dong-Hwang Chen, Chao-Chuan Cheng, Li-Chi Lin