Patents by Inventor Yeli Zhang

Yeli Zhang 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: 20230059619
    Abstract: A solid dispersion comprising: (a) a pharmaceutical active ingredient or a nutraceutical active ingredient having a low solubility; and (b) sodium or potassium alginate. In addition, a drug dosage form prepared from such a solid dispersion.
    Type: Application
    Filed: May 31, 2022
    Publication date: February 23, 2023
    Inventors: Jian Guan, Shirui Mao, Trond Helgerud, Yeli Zhang
  • Patent number: 11504324
    Abstract: A nanosuspension comprising (a) a pharmaceutical active ingredient or nutraceutical active ingredient having low solubility; (b) at least one alginate selected from the group consisting of (i) sodium alginate having a viscosity of 100 mPa·s or less in a 1% solution in water at 20° C. and (ii) potassium alginate; and (c) water. Also, a drug dosage form prepared from such a nanosuspension.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 22, 2022
    Assignee: DUPONT NUTRITION USA, INC.
    Inventors: Shirui Mao, Jian Guan, Trond Helgerud, Yeli Zhang
  • Publication number: 20180250227
    Abstract: A nanosuspension comprising (a) a pharmaceutical active ingredient or nutraceutical active ingredient having low solubility; (b) at least one alginate selected from the group consisting of (i) sodium alginate having a viscosity of 100 mPa·s or less in a 1% solution in water at 20° C. and (ii) potassium alginate; and (c) water. Also, a drug dosage form prepared from such a nanosuspension.
    Type: Application
    Filed: November 18, 2015
    Publication date: September 6, 2018
    Inventors: Shirui Mao, Jian Guan, Trond Helgerud, Yeli Zhang
  • Publication number: 20180042851
    Abstract: A solid dispersion comprising: (a) a pharmaceutical active ingredient or a nutraceutical active ingredient having a low solubility; and (b) sodium or potassium alginate. In addition, a drug dosage form prepared from such a solid dispersion.
    Type: Application
    Filed: March 10, 2016
    Publication date: February 15, 2018
    Inventors: Jian Guan, Shirui Mao, Trond Helgerud, Yeli Zhang
  • Patent number: 8871270
    Abstract: This invention relates to a composition comprising physically modified, partially pregelatinized starch, which is useful as a multi-functional excipient for solid dosage forms, a method of making such composition, and solid dosage forms prepared using the composition. Such composition is characterized by a predominance of particles having both birefringent and non-birefringent portions, a sedimentation volume of between 1.5 and 9 ml/g, and a cold water solubility of between 1 and 8%. This free-flowing starch may have an average particle size greater than 30 ?m, and a moisture content of between 5 and 12% by weight. The 500 mg placebo tablet prepared from such composition at 13 kN using a manual tablet press equipped with a 1.11 cm ( 7/16?) standard concave punches has a crushing strength of at least 160 Newtons, and a disintegration time of no more than 10 minutes.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: October 28, 2014
    Assignee: Corn Products Development, Inc
    Inventors: Yeli Zhang, Chaodong Xiao, Wolfgang Bindzus, Vincent Green
  • Publication number: 20120003304
    Abstract: The present invention is directed to a solid form comprising an active ingredient and croscarmellose, wherein: (i) the croscarmellose has a median particle size of ?56 microns, (ii) the croscarmellose is present in an amount of ?4% by weight based on the total weight of the solid form, and (iii) the solid form is a tablet, capsule, caplet, lozenge or granule. The present invention is also directed to a method of decreasing the disintegration time (for example, in water) of a solid form that comprises croscarmellose in an amount ?4% by weight based on the total weight of the solid form.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 5, 2012
    Applicant: FMC CORPORATION
    Inventor: Yeli Zhang
  • Publication number: 20110150993
    Abstract: The disclosure is directed to fine particle croscarmellose and its use in various compositions such as solid dosage forms. More specifically, the present disclosure relates to fine particle croscarmellose having a median particle size of 5 ?m to 36 ?m and a volume mean diameter of 40 ?m or less. The specific surface area is typically 0.3 m2/g or more. The fine particle croscarmellose is useful as a disintegrant.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: FMC CORPORATION
    Inventor: Yeli Zhang
  • Publication number: 20110105441
    Abstract: The invention is directed to the functionality and performance of superdisintegrants in orally disintegrating tablets (ODT). The invention can be an aged direct compression ODT having between about 0.3% to about 2% (wt/wt) sodium croscarmellose relative to the total weight of the ODT, a polyol matrix, optionally a lubricant, and an active pharmaceutical or nutraceutical ingredient, in which after storage for four months the ODT has a disintegration time using an excess water test that is less than 30 seconds and a tensile strength greater than 0.5 MPa. The invention is also directed to a direct compression ODT, consisting essentially of about 0.5% to 2.0% sodium croscarmellose, from 0.1% to 2.0% lubricant, an API, up to 10% (wt/wt) microcrystalline cellulose, optionally one or more colorants, sweeteners, fragrances, flavor compounds, and/or flavor blockers, and the balance spray-dried mannitol.
    Type: Application
    Filed: February 9, 2010
    Publication date: May 5, 2011
    Applicant: FMC CORPORATION
    Inventors: Yeli Zhang, Brian Carlin
  • Publication number: 20070190013
    Abstract: The invention provides films and film forming compositions that can be applied onto a tissue surface. The film and the film forming composition comprise at least one polycarboxylated polymer and at least one polysaccharide.
    Type: Application
    Filed: February 13, 2006
    Publication date: August 16, 2007
    Inventors: Yeli Zhang, Reema Puri, Patricia Siuta-Cruce, Paul Foreman, Todd Manegold
  • Publication number: 20070048369
    Abstract: Mucoadhesive tablets have a convex surface, a diameter to cup depth ratio of 4-20 and a cup depth to edge thickness ratio of greater than 0.75 swiftly adheres and conforms to the contacting tissue. The tablets are used to administer actives such as, for example, benzocaine.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 1, 2007
    Inventors: Paul Foreman, Yeli Zhang, Reema Puri
  • Patent number: 7138132
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom. In one embodiment, a vascular stent is coated with hydrogel with therapeutic agent entrapped therein.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: November 21, 2006
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Publication number: 20060008521
    Abstract: This invention relates to a composition comprising physically modified, partially pregelatinized starch, which is useful as a multi-functional excipient for solid dosage forms, a method of making such composition, and solid dosage forms prepared using the composition. Such composition is characterized by a predominance of particles having both birefringent and non-birefringent portions, a sedimentation volume of between 1.5 and 9 ml/g, and a cold water solubility of between 1 and 8%. This free-flowing starch may have an average particle size greater than 30 ?m, and a moisture content of between 5 and 12% by weight. The 500 mg placebo tablet prepared from such composition at 13 kN using a manual tablet press equipped with a 1.11 cm ( 7/16?) standard concave punches has a crushing strength of at least 160 Newtons, and a disintegration time of no more than 10 minutes.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 12, 2006
    Inventors: Yeli Zhang, Chaodong Xiao, Wolfgang Bindzus, Vincent Green
  • Patent number: 6916857
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide (e.g. dextran) containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: July 12, 2005
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Publication number: 20050129734
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom. In one embodiment, a vascular stent is coated with hydrogel with therapeutic agent entrapped therein.
    Type: Application
    Filed: January 19, 2005
    Publication date: June 16, 2005
    Applicant: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Patent number: 6905700
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom. In one embodiment, a vascular stent is coated with hydrogel with therapeutic agent entrapped therein.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: June 14, 2005
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Publication number: 20040151752
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom. In one embodiment, a vascular stent is coated with hydrogel with therapeutic agent entrapped therein.
    Type: Application
    Filed: January 23, 2004
    Publication date: August 5, 2004
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Publication number: 20040122165
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide (e.g., dextran) containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Preferably, the hydrophobic polymer is prepared by reacting diol obtained by converting hydroxy of terminal carboxylic acid group of poly(lactic acid) to aminoethanol group and reacting the hydroxyls of the diol with an unsaturated group introducing compound which is acryloyl chloride or isocyanate having an unsaturated group at one end of the molecule.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 24, 2004
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Patent number: 6716445
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom. In one embodiment, a vascular stent is coated with hydrogel with therapeutic agent entrapped therein.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 6, 2004
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Patent number: 6709668
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide (e.g., dextran) containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Agent can be entrapped in the polymer network, e.g., drugs, macromolecules or synthetic or natural polymers, for controlled release therefrom.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: March 23, 2004
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu
  • Publication number: 20030125509
    Abstract: A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxyl groups which are reacted with unsaturated group introducing compound, is convertible by free radical polymerization to form a hydrogel containing a three dimensional crosslinked polymer network containing hydrophobic and hydrophilic components. Preferably, the hydrophobic polymer is prepared by reacting the hydroxyls of a diol obtained by converting hydroxy of terminal carboxylic acid group of poly(lactic acid) to aminoethanol group, with an unsaturated group introducing compound which is acryloyl chloride or isocyanate having an unsaturated group at one end of the molecules.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 3, 2003
    Inventors: Chee-Youb Won, Yeli Zhang, Chih-Chang Chu