Patents by Inventor Shouping Ji

Shouping Ji 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: 8192989
    Abstract: The present invention is related to a method for introducing biomolecules, such as nucleic acids, into cells by culturing cells on a solid surface which is coated with a transfection reagents and biomolecules.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: June 5, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Lei Yu, Kenji Matsumoto, Shouping Ji, Fusheng Du
  • Patent number: 7446099
    Abstract: Complexes are disclosed which are a combination of a polynucleotide and a biodegradable polyacetal-peptide. The disclosed complexes are useful for cell transfection.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: November 4, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Sang Van, Nitnara Viroonchatapan, Shouping Ji, Kenji Matsumoto, Lei Yu
  • Publication number: 20070072171
    Abstract: The present invention is related to a method for introducing biomolecules, such as nucleic acids, into cells by culturing cells on a solid surface which is coated with a transfection reagents and biomolecules.
    Type: Application
    Filed: September 26, 2006
    Publication date: March 29, 2007
    Inventors: Lei Yu, Kenji Matsumoto, Shouping Ji, Fusheng Du
  • Publication number: 20070020761
    Abstract: The present invention is related to a method for introducing biomolecules, such as nucleic acids, into cells by culturing cells on a solid surface which is coated with a transfection reagents and biomolecules.
    Type: Application
    Filed: September 26, 2006
    Publication date: January 25, 2007
    Inventors: Lei Yu, Kenji Matsumoto, Shouping Ji, Fusheng Du
  • Patent number: 7125709
    Abstract: A cell culture device for transfecting a eukaryotic cell is disclosed. The cell culture/transfection device may be a multiwell plate or slide which has been coated with a metal salt such as CaCl2. Methods of using the cell culture device to transfect mammalian cells and/or to monitor cell transfection are described. Kits are also described which include the cell transfection device, eukaryotic cells to be transformed and nucleic acid for transformation.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: October 24, 2006
    Assignee: Nitto Denko Corporation
    Inventors: Yasunobu Tanaka, Lei Yu, Shouping Ji
  • Publication number: 20060147376
    Abstract: The present invention provides a controllably degradable cationic polymer for delivery of biomolecules (nucleic acids, peptides, etc.), drugs, molecules used in medical imaging applications, sensitizing agents used in cancer treatments, and molecules used in tissue engineering. The present invention also provides a method for synthesizing the polymer according to the present invention.
    Type: Application
    Filed: February 27, 2006
    Publication date: July 6, 2006
    Inventors: Lei Yu, Fusheng Du, Shouping Ji, Kenji Matsumoto
  • Patent number: 7048925
    Abstract: Polyacetals comprising a recurring units represented by a formula selected from the group consisting of formula (I) and (II): wherein A comprises at least one acetal group; B is selected from the group consisting of —CH—, —CH(CH3)—, CH2CH—, —CH2C(CH3)—, —CH(CH3)CH—, and —CHCH(CH3)CH(CH3)—; Z is selected from the group consisting of C(O)OR1, C(O)SR1, C(O)NR1R2, and VU; V is a linker group; U is selected from the group consisting of poly(ethyleneimine), poly(propyleneimine), poly(lysine), PAMAM dendrimer, octaamine dendrimer, hexadecaamine dendrimer, enhancer, and targeting receptor; R1 and R2 are each individually selected from the group consisting of hydrogen, C1 to C10 alkyl, and C6 to C10 aryl; D is a linkage selected from the group consisting of carboxylic amide, carboxylic ester, urea, and urethane; and G is selected from the group consisting of C4 to C20 alkyl, C6-C10 aryl, and —(OCH2CH2)n—, where n is in the range of 1 to about 250, are useful in nucleic acid delivery applications.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 23, 2006
    Assignee: Nitto Denko Corporation
    Inventors: Sang Van, Nitnara Viroonchatapan, Shouping Ji, Lei Yu
  • Publication number: 20050191746
    Abstract: Complexes are disclosed which are a combination of a polynucleotide and a biodegradable polyacetal-peptide. The disclosed complexes are useful for cell transfection.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Sang Van, Nitnara Viroonchatapan, Shouping Ji, Kenji Matsumoto, Lei Yu
  • Publication number: 20050176132
    Abstract: A cell culture device for transfecting a eukaryotic cell is disclosed. The cell culture/transfection device may be a multiwell plate or slide which has been coated with a metal salt such as CaCl2. Methods of using the cell culture device to transfect mammalian cells and/or to monitor cell transfection are described. Kits are also described which include the cell transfection device, eukaryotic cells to be transformed and nucleic acid for transformation.
    Type: Application
    Filed: February 10, 2004
    Publication date: August 11, 2005
    Inventors: Yasunobu Tanaka, Lei Yu, Shouping Ji
  • Patent number: 6878374
    Abstract: A polymer comprising recurring units represented by formula (I): wherein X is selected from the group consisting of C(O)OR1, C(O)SR1, C(O)NR1R2, and VZ, where R1 and R2 are each individually selected from the group consisting of hydrogen, C1 to C10 alkyl, and C6 to C10 aryl, where V is a labile linker group, and where Z is selected from the group consisting of poly(ethyleneimine), poly(propyleneimine), poly(lysine), PAMAM dendrimer, octaamine dendrimer, and hexadecaamine dendrimer; and wherein Y is selected from the group consisting of —(CH2)2—, —(CH2)2—O—(CH2)2—, —(CH2)2—O—(CH2)2—, and —(CH2)3—NHC(O)—(CH2)6—C(O)NH—(CH2)3— is useful in nucleic acid delivery applications. Polyacetals of the formula (I) are preferably made by reacting appropriate diols and divinyl ethers. In preferred embodiments, complexes formed between polyacetals of the formula (I) and polynucleotides are useful as transfection reagents.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: April 12, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Lei Yu, Sang Van, Shouping Ji, Kenji Matsumoto
  • Publication number: 20050049387
    Abstract: Polyacetals comprising a recurring units represented by a formula selected from the group consisting of formula (I) and (II): wherein A comprises at least one acetal group; B is selected from the group consisting of —CH—, —CH(CH3)—, CH2CH—, —CH2C(CH3)—, —CH(CH3)CH—, and —CHCH(CH3)CH(CH3)—; Z is selected from the group consisting of C(O)OR1, C(O)SR1, C(O)NR1R2, and VU; V is a linker group; U is selected from the group consisting of poly(ethyleneimine), poly(propyleneimine), poly(lysine), PAMAM dendrimer, octaamine dendrimer, hexadecaamine dendrimer, enhancer, and targeting receptor; R1 and R2 are each individually selected from the group consisting of hydrogen, C1 to C10 alkyl, and C6 to C10 aryl; D is a linkage selected from the group consisting of carboxylic amide, carboxylic ester, urea, and urethane; and G is selected from the group consisting of C4 to C20 alkyl, C6-C10 aryl, and —(OCH2CH2)n—, where n is in the range of 1 to about 250, are useful in nucleic acid delivery applications.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 3, 2005
    Inventors: Sang Van, Nitnara Viroonchatapan, Shouping Ji, Lei Yu
  • Publication number: 20040166089
    Abstract: A polymer comprising recurring units represented by formula (I): 1
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Inventors: Lei Yu, Sang Van, Shouping Ji, Kenji Matsumoto
  • Publication number: 20040138154
    Abstract: The present invention is related to a method for introducing biomolecules, such as nucleic acids, into cells by culturing cells on a solid surface which is coated with a transfection reagents and biomolecules.
    Type: Application
    Filed: January 13, 2003
    Publication date: July 15, 2004
    Inventors: Lei Yu, Kenji Matsumoto, Shouping Ji, Fusheng Du
  • Publication number: 20030215395
    Abstract: The present invention provides a controllably degradable cationic polymer for delivery of biomolecules (nucleic acids, peptides, etc.), drugs, molecules used in medical imaging applications, sensitizing agents used in cancer treatments, and molecules used in tissue engineering. The present invention also provides a method for synthesizing the polymer according to the present invention.
    Type: Application
    Filed: October 11, 2002
    Publication date: November 20, 2003
    Inventors: Lei Yu, Fusheng Du, Shouping Ji, Kenji Matsumoto