Patents by Inventor Shifeng Bill Wei

Shifeng Bill Wei 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).

  • Polyethylene glycol coating for electrostatic dry deposition of pharmaceuticals
    Publication number: 20020102308
    Abstract: The invention relates to a substrate coating for the electrostatic deposition of dry powder medicaments for use in the manufacture of pharmaceutical dosage forms comprising micronized polyethylene glycol (PEG), with A molecular weight in the range of 1,000 to 20,000, and having a particle size of 1-100 &mgr;m. The invention also relates to pharmaceutical compositions having such a substrate coating, and processes for manufacturing such pharmaceutical compositions. The invention also relates to the technology of reversing negative charge of medicaments so that they can be electrostatically deposited on a negatively charged substrate.
    Type: Application
    Filed: January 29, 2002
    Publication date: August 1, 2002
    Inventors: Shifeng Bill Wei, Herling Uang
  • Polyethylene glycol coating for electrostatic dry deposition of pharmaceuticals
    Patent number: 6372246
    Abstract: The invention relates to a substrate coating for the electrostatic deposition of dry powder medicaments for use in the manufacture of pharmaceutical dosage forms comprising micronized polyethylene glycol (PEG), with A molecular weight in the range of 1,000 to 20,000, and having a particle size of 1-100 &mgr;m. The invention also relates to pharmaceutical compositions having such a substrate coating, and processes for manufacturing such pharmaceutical compositions. The invention also relates to the technology of reversing negative charge of medicaments so that they can be electrostatically deposited on a negatively charged substrate.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: April 16, 2002
    Assignee: Ortho-McNeil Pharmaceutical, Inc.
    Inventors: Shifeng Bill Wei, Herling Uang