Patents by Inventor Yiwei Qi

Yiwei Qi 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).

  • AIR EXCHANGE SYSTEM WITH MULTIPLE AIR BLOWERS OR FANS TO PRODUCE A CYCLONE-LIKE AIR FLOW
    Publication number: 20140034039
    Abstract: An air exchange system places the air pumps or fans outside of the main air outflow pathway through a device, such as a range hood. By using this configuration, the system is made safe, easy to maintain with less noise and may even increase the efficiency of the air pump by not subjecting it to debris, particles or turbulence in the air flow, also flexible to add more pumps with significant increase the size of the air exchange system. Air pumps can be operably connected to push air into two or more air reservoirs. Each air reservoir has a narrow air outlet slit along with a Coanda design. When air comes out of the narrow air outlet, it has high speed and generates a negative pressure due to the Bernoulli effect. Such negative pressure will bring more air around into the air flow system, thus causing a desired air exchange.
    Type: Application
    Filed: October 29, 2012
    Publication date: February 6, 2014
    Inventors: YiWei Qi, Yinghong Li
  • Low molecular weight heparin composition and uses thereof
    Patent number: 8609632
    Abstract: Preparations of low molecular weight heparins (LMWHs) having improved properties, e.g., properties that provide a clinical advantage, are provided herein. Methods of making and using such preparations as well as methods of analyzing starting materials, processing, intermediates and final products in the production of such LMWH preparations are provided.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: December 17, 2013
    Assignee: Momenta Pharmaceuticals, Inc.
    Inventors: Zachary Shriver, Mallikarjun Sundaram, Ganesh Venkataraman, Pat Oliver-Shaffer, Yiming Yao, Zainab Sirajbhai Mamuwala, Ian David Fier, Yiwei Qi, Ishan Capila, Nur Sibel Gunay, Daniela Beccati, Cuihua Liu, Corinne Bauer, Ying Li
  • Methods for analyzing a heparin sample
    Patent number: 8512969
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: August 20, 2013
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • METHODS AND PRODUCTS RELATED TO LOW MOLECULAR WEIGHT HEPARIN
    Publication number: 20130017565
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Application
    Filed: May 7, 2012
    Publication date: January 17, 2013
    Applicant: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Methods for analyzing or processing a heparin sample
    Patent number: 8173384
    Abstract: The invention relates to methods and products for analyzing or processing a heparin sample. In one embodiment, the methods comprise contacting the sample with heparinase I, heparinase II and heparinase III, determining the amount of a signature component in the sample using a separation method, and making a determination about the sample based upon a comparison of the amount of the signature component in the sample to a reference database for a heparin.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: May 8, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • LOW MOLECULAR WEIGHT HEPARIN COMPOSITION AND USES THEREOF
    Publication number: 20100305022
    Abstract: Preparations of low molecular weight heparins (LMWHs) having improved properties, e.g., properties that provide a clinical advantage, are provided herein. Methods of making and using such preparations as well as methods of analyzing starting materials, processing, intermediates and final products in the production of such LMWH preparations are provided.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 2, 2010
    Inventors: Zachary Shriver, Mallikarjun Sundaram, Ganesh Venkataraman, Pat Oliver-Shaffer, Yiming Yao, Zainab Sirajbhai Mamuwala, Ian David Fier, Yiwei Qi, Ishan Capila, Nur Sibel Gunay, Daniela Beccati, Cuihua Liu, Corinne Bauer, Ying Li
  • Methods and products related to pulmonary delivery of polysaccharides
    Patent number: 7709461
    Abstract: The invention relates to methods for delivering polysaccharides by a pulmonary route to achieve local and systemic therapeutic effects. The polysaccharides may be formulated or unformulated and in some instances have an extremely fast absorption rate.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: May 4, 2010
    Assignee: Massachusetts Institute of Technology
    Inventors: Dongfang Liu, Yiwei Qi, Ganesh Venkataraman, Mallikarjun Sundaram, Ram Sasisekharan
  • Methods and producing low molecular weight heparin
    Patent number: 7687479
    Abstract: The invention relates, in part, to methods and products related to producing low molecular weight heparin.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: March 30, 2010
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • METHODS AND PRODUCTS RELATED TO LOW MOLECULAR WEIGHT HEPARIN
    Publication number: 20100062468
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Application
    Filed: July 27, 2009
    Publication date: March 11, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Methods for evaluating the quality of a heparin sample
    Patent number: 7585642
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 8, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Polysaccharides for pulmonary delivery of active agents
    Patent number: 7560444
    Abstract: Formulation for pulmonary delivery of a therapeutic, prophylactic, or diagnostic agent including a low molecular weight heparin and a therapeutic, prophylactic, or diagnostic agent.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: July 14, 2009
    Assignee: Momenta Pharmaceuticals, Inc.
    Inventors: Thomas Richardson, Ganesh Venkataraman, Yiwei Qi, Michele Picard
  • Compositions of and Methods of Using Oversulfated Glycosaminoglycans
    Publication number: 20090105463
    Abstract: The invention relates, in part, to compositions comprising glycosaminoglycans, fragments of glycosaminoglycans or glycosaminoglycan fractions. The compositions provided can be used in various methods of modulating FGF and/or VEGF activity. The method can be in vitro or in vivo methods. Therefore, the invention also relates, in part, to methods of treating a subject with the compositions provided.
    Type: Application
    Filed: March 29, 2006
    Publication date: April 23, 2009
    Applicant: Massachusetts Institute of Technology
    Inventors: David A. Berry, Kevin Pojasek, Dongfang Liu, Chi-Pong Kwan, Yiwei Qi, Ram Sasisekharan
  • Methods and products related to evaluating the quality of a polysaccharide
    Patent number: 7399604
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: July 15, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Low molecular weight heparin composition and uses thereof
    Publication number: 20070287683
    Abstract: Preparations of low molecular weight heparins (LMWHs) having improved properties, e.g., properties that provide a clinical advantage, are provided herein. Methods of making and using such preparations as well as methods of analyzing starting materials, processing, intermediates and final products in the production of such LMWH preparations are provided.
    Type: Application
    Filed: May 24, 2007
    Publication date: December 13, 2007
    Inventors: Zachary Shriver, Mallikarjun Sundaram, Ganesh Venkataraman, Pat Oliver-Shaffer, Yiming Yao, Zainab Mamuwala, Ian Fier, Yiwei Qi, Ishan Capila, Nur Gunay, Daniela Beccati, Cuihua Liu, Corinne Bauer, Ying Li
  • Methods and products related to evaluating the quality of a polysaccharide
    Publication number: 20070161073
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Application
    Filed: November 30, 2006
    Publication date: July 12, 2007
    Applicant: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Methods and products related to producing low molecular weight heparin
    Publication number: 20070065921
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 22, 2007
    Applicant: Massachusetts Institute Of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Methods and products related to the analysis of polysaccarides
    Patent number: 7083937
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: August 1, 2006
    Assignee: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Methods and products related to evaluating the quality of a polysaccharide
    Publication number: 20060024664
    Abstract: The invention relates to methods and products for characterizing and using polysaccharides. Low molecular weight heparin products and methods of use are described. Methods for characterizing purity and activity of polysaccharide preparations including glycosaminoglycans such as heparin are also described.
    Type: Application
    Filed: July 15, 2005
    Publication date: February 2, 2006
    Applicant: Massachusetts Institute of Technology
    Inventors: Ram Sasisekharan, Ganesh Venkataraman, Zachary Shriver, Dongfang Liu, Mallikarjun Sundaram, Yiwei Qi
  • Polysaccharides for pulmonary delivery of active agents
    Publication number: 20050207988
    Abstract: Formulation for pulmonary delivery of a therapeutic, prophylactic, or diagnostic agent including a low molecular weight heparin and a therapeutic, prophylactic, or diagnostic agent.
    Type: Application
    Filed: October 1, 2004
    Publication date: September 22, 2005
    Inventors: Thomas Richardson, Ganesh Venkataraman, Yiwei Qi, Michele Picard
  • Methods and products for mucosal delivery
    Publication number: 20040087543
    Abstract: The invention features methods and products associated with non-invasive delivery of polysaccharide preparations.
    Type: Application
    Filed: April 25, 2003
    Publication date: May 6, 2004
    Inventors: Zachary Shriver, Ganesh Venkataraman, Mallikarjun Sundaram, Ram Sasisekharan, Thomas Richardson, Yiwei Qi