Patents by Inventor Helen Ruan

Helen Ruan 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: 10975048
    Abstract: The invention belongs to the field of biomedical research involving the 1,3,4-selenyldiazo derivatives that have cell protective activity. Because there are not so many heterocyclic selenium compounds, we synthesized a new type of selenium analog of BPTES. As the isoacceptor of BPTES, the compounds have antitumor activity, anti-oxidation and cell protection function. Currently many drugs contain the thiodiazo motif, so synthesis of selenyldiazo functional group could further optimize these drugs and are important in new drug development and application.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: April 13, 2021
    Inventors: Benfang Helen Ruan, Jennifer Jin Ruan
  • Patent number: 10597369
    Abstract: A class of compounds of monosulfonic phenyltetrazole, with the structure of 2-(R1 phenyl)-5 (2-sulfonic phenyl)-2H-tetrazole. The 2-sulfonic phenyl tetrazolium salt of this invention has advantages of low toxicity, short synthetic route, easy control of purity and quality. As the 2-sulfonic phenyl tetrazolium salts has almost no absorption at 450 nm where the reduzate has greater absorption, spectrophotometry can simply and rapidly determine the activity of glutamate dehydrogenase, or the content of NADH/NADPH.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: March 24, 2020
    Assignee: HANGZHOU JENNIFER BIOTECH CO., LTD.
    Inventors: Benfang Helen Ruan, Jennifer Jin Ruan
  • Patent number: 10596152
    Abstract: The present invention relates to the field of biomedicine, and discloses a class of selenium-containing inhibitors that bind to the allosteric site of glutaminase, and/or inhibit glutamate dehydrogenase, which has a long carbon chain or similar derivative structure linked with the N atom of benzoisoselenazole 3-ketone. The advantages of this invention are that compounds have novel binding activity with glutaminase and potent inhibitory activity of glutaminase. Moreover, some novel dual KGA/GDH inhibitors demonstrated good in vivo efficacy in inhibiting the tumor growth in mice by blocking glutaminolysis. At the meantime, compounds of this invention play an important part in the protection of survival, growth and differentiation of nerve cells under the condition of hypoxia-ischemia.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: March 24, 2020
    Assignee: HANGZHOU GAMMA BIOTECH CO., LTD.
    Inventors: Benfang Helen Ruan, Jennifer Jin Ruan
  • Publication number: 20180290991
    Abstract: The invention belongs to the field of biomedical research involving the 1,3,4-selenyldiazo derivatives that have cell protective activity. Because there are not so many heterocyclic selenium compounds, we synthesized a new type of selenium analog of BPTES. As the isoacceptor of BPTES, the compounds have antitumor activity, anti-oxidation and cell protection function. Currently many drugs contain the thiodiazo motif, so synthesis of selenyldiazo functional group could further optimize these drugs and are important in new drug development and application.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: HANGZHOU JENNIFER BIOTECH CO., LTD.
    Inventors: Benfang Helen RUAN, Jennifer Jin RUAN
  • Publication number: 20180263961
    Abstract: The present invention relates to the field of biomedicine, and discloses a class of selenium-containing inhibitors that bind to the allosteric site of glutaminase, and/or inhibit glutamate dehydrogenase, which has a long carbon chain or similar derivative structure linked with the N atom of benzoisoselenazole 3-ketone. The advantages of this invention are that compounds have novel binding activity with glutaminase and potent inhibitory activity of glutaminase. Moreover, some novel dual KGA/GDH inhibitors demonstrated good in vivo efficacy in inhibiting the tumor growth in mice by blocking glutaminolysis. At the meantime, compounds of this invention play an important part in the protection of survival, growth and differentiation of nerve cells under the condition of hypoxia-ischemia.
    Type: Application
    Filed: May 17, 2018
    Publication date: September 20, 2018
    Applicant: HANGZHOU GAMMA BIOTECH CO., LTD.
    Inventors: Benfang Helen RUAN, Jennifer Jin RUAN
  • Publication number: 20180244637
    Abstract: A class of compounds of monosulfonic phenyltetrazole, with the structure of 2-(R1 phenyl)-5 (2-sulfonic phenyl)-2H-tetrazole. The 2-sulfonic phenyl tetrazolium salt of this invention has advantages of low toxicity, short synthetic route, easy control of purity and quality. As the 2-sulfonic phenyl tetrazolium salts has almost no absorption at 450 nm where the reduzate has greater absorption, spectrophotometry can simply and rapidly determine the activity of glutamate dehydrogenase, or the content of NADH/NADPH.
    Type: Application
    Filed: November 9, 2016
    Publication date: August 30, 2018
    Applicant: HANGZHOU JENNIFER BIOTECH CO., LTD.
    Inventors: Benfang Helen RUAN, Jennifer Jin RUAN
  • Publication number: 20100196355
    Abstract: Immunophilin ligands and their uses as modulators of calcium channel activity are disclosed. Screening, therapeutic and prophylactic methods for conditions associated with calcium channel dysfunction, e.g., neurodegenerative and cardiovascular disorders, are also disclosed.
    Type: Application
    Filed: January 29, 2007
    Publication date: August 5, 2010
    Applicant: Wyeth
    Inventors: Edmund Idris Graziani, Benfang Helen Ruan, Kevin Pong, Mark Robert Bowlby
  • Publication number: 20060146467
    Abstract: Power is applied to a voltage supply. A signal that indicates reduced work capability in an integrated circuit (IC) that is being powered by the voltage supply is generated based on workload demand or conscious power and performance tradeoffs. This signal is applied to increase the power efficiency of the voltage supply, while the supply is powering the IC in its reduced work capability state.
    Type: Application
    Filed: March 1, 2006
    Publication date: July 6, 2006
    Inventors: Helen Ruan, Don Nguyen