Patents by Inventor Egar C. Boedeker

Egar C. Boedeker 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).

  • Microparticle carriers of maximal uptake capacity by both M cells and non-M cells
    Patent number: 5693343
    Abstract: In a solvent extraction process for preparing microspheres of a biodegrade polymer, the improvement comprising: preparing a homogenized antigen-sucrose matrix and adding a solvent to the sucrose-antigen matrix to form a solution; preparing a solution of a biodegradable polymer by adding a solvent to the polymer; adding the biodegradable polymer solution to the antigen-sucrose solution; adding an oil to the polymer-sucrose-antigen solution to form an emulsion having a controlled viscosity that corresponds to a predetermined average particle size of distributions of microspheres of biodegradable polymers; centrifuging the emulsion of controlled viscosity and removing the supernatant to obtain microspheres of a predetermined range of particle size distributions of from about 0.5 to about 7.0 micrometers.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: December 2, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Robert H. Reid, John E. van Hamont, William R. Brown, Egar C. Boedeker, Curt Thies