Patents by Inventor Richard W. Korsmeyer

Richard W. Korsmeyer 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: 8017144
    Abstract: The present invention is directed to an improved system for controlled release of a bone growth promoting compound and to a flowable composition for its formation. The flowable composition is composed of a bone growth promoting compound, a thermoplastic polymer and an organic solvent. The flowable composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of a bone growth promoting compound to certain tissues.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: September 13, 2011
    Assignee: Pfizer Inc.
    Inventors: Francis Dumont, Richard L. Dunn, Scott A. Jeffers, Richard W. Korsmeyer, Mei Li, Vishwas M. Paralkar, Mingxing Zhou
  • Publication number: 20090169595
    Abstract: The present invention is directed to an improved system for controlled release of a bone growth promoting compound and to a flowable composition for its formation. The flowable composition is composed of a bone growth promoting compound, a thermoplastic polymer and an organic solvent. The flowable composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of a bone growth promoting compound to certain tissues.
    Type: Application
    Filed: October 24, 2008
    Publication date: July 2, 2009
    Inventors: Francis Dumont, Richard L. Dunn, Scott A. Jeffers, Richard W. Korsmeyer, Mei Li, Vishwas M. Paralkar, Mingxing Zhou
  • Patent number: 7108865
    Abstract: A controlled-release dosage form of azithromycin having an improved side effect profile; a process for preparing the dosage form; and a method of treating a microbial infection, comprising administering azithromycin in such a controlled-release dosage form to a mammal, including a human patient, in need of such treatment.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: September 19, 2006
    Assignee: Pfizer Inc
    Inventors: William J. Curatolo, Hylar L. Friedman, Richard W. Korsmeyer, Steven R. LeMott
  • Publication number: 20030166631
    Abstract: This invention is directed to pharmaceutical compositions and methods comprising prostglandin agonists, specifically EP2 receptor selective agonists, which are useful to enhance bone repair and healing and restore or augment bone mass in vertebrates, particularly mammals. The EP2 receptor selective agonists of the present invention are effective in the treatment of conditions such as those in which the patient has delayed or non-union fracture, bone defect, spinal fusion, bone in-growth, cranial facial reconstruction or bone sites at risk for fracture.
    Type: Application
    Filed: November 26, 2002
    Publication date: September 4, 2003
    Inventors: Francis Dumont, Jinyang Hong, Yesook Kim, Richard W. Korsmeyer, Mei Li, Vishwas M. Paralkar, David D. Thompson
  • Publication number: 20030104031
    Abstract: The present invention is directed to an improved system for controlled release of a bone growth promoting compound and to a flowable composition for its formation. The flowable composition is composed of a bone growth promoting compound, a thermoplastic polymer and an organic solvent. The flowable composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of a bone growth promoting compound to certain tissues.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 5, 2003
    Inventors: Francis Dumont, Richard L. Dunn, Scott A. Jeffers, Richard W. Korsmeyer, Mei Li, Vishwas M. Paralkar, Mingxing Zhou
  • Patent number: 6537573
    Abstract: A dosage form containing cetirizine as an immediate release component and pseudoephedrine or a pharmaceutically acceptable salt thereof as a controlled release component. A portion of the pseudoephedrine can also be incorporated as an immediate release component. The dosage form is free of alcohols having a molecular weight lower than 100 and reactive derivatives thereof.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: March 25, 2003
    Assignee: Pfizer Inc
    Inventors: Barbara A. Johnson, Richard W. Korsmeyer, Cynthia A. Oksanen
  • Publication number: 20020012700
    Abstract: A dosage form containing cetirizine as an immediate release component and pseudoephedrine or a pharmaceutically acceptable salt thereof as a controlled release component. A portion of the pseudoephedrine can also be incorporated as an immediate release component. The dosage form is free of alcohols having a molecular weight lower than 100 and reactive derivatives thereof.
    Type: Application
    Filed: January 5, 2001
    Publication date: January 31, 2002
    Inventors: Barbara A. Johnson, Richard W. Korsmeyer, Cynthia A. Oksanen
  • Patent number: 6171618
    Abstract: A dosage form containing cetirizine as an immediate release component and pseudoephedrine or a pharmaceutically acceptable salt thereof as a controlled release component. A portion of the pseudoephedrine can also be incorporated as an immediate release component. The dosage form is free of alcohols having a molecular weight lower than 100 and reactive derivatives thereof.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: January 9, 2001
    Assignee: Pfizer Inc.
    Inventors: Barbara A. Johnson, Richard W. Korsmeyer, Cynthia A. Oksanen
  • Patent number: 6068859
    Abstract: A controlled-release dosage form of azithromycin having an improved side effect profile; a process for preparing the dosage form; and a method of treating a microbial infection, comprising administering azithromycin in such a controlled-release dosage form to a mammal, including a human patient, in need of such treatment.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: May 30, 2000
    Assignee: Pfizer Inc.
    Inventors: William J. Curatolo, Hylar L. Friedman, Richard W. Korsmeyer, Steven R. LeMott
  • Patent number: 5698220
    Abstract: A device for controlled release of an active substance through one or more asymmetric membranes by diffusion and/or osmotic pumping.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 16, 1997
    Assignee: Pfizer Inc.
    Inventors: John R. Cardinal, Scott M. Herbig, Richard W. Korsmeyer, Jeelin Lo, Kelly L. Smith, Avinash G. Thombre
  • Patent number: 5612059
    Abstract: A device for controlled release of an active substance through one or more asymmetric membranes by diffusion and/or osmotic pumping.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: March 18, 1997
    Assignee: Pfizer Inc.
    Inventors: John R. Cardinal, Scott M. Herbig, Richard W. Korsmeyer, Jeelin Lo, Kelly L. Smith, Avinash G. Thombre
  • Patent number: 5056715
    Abstract: An apparatus for mixing and spraying a slurry. The apparatus comprises a housing including a channel. The channel is in fluid communication with an inlet at its upstream end and curves to an outlet at its downstream end. The outlet is in fluid communication with an air atomization nozzle. A mixing surface is capable of rotation with respect to the housing and the channel is open to the mixing surface.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: October 15, 1991
    Assignee: Pfizer Inc.
    Inventor: Richard W. Korsmeyer
  • Patent number: 5012975
    Abstract: An apparatus for mixing and spraying a slurry. The apparatus comprises a mixing chamber and a screw means, disposed within the chamber, for mixing and transporting material downstream to an air atomization nozzle. Another aspect of this invention is a method for mixing and spraying a slurry. The method comprises introducing and propelling a particulate solid along a mixing chamber. A liquid is introduced downstream from the introduction of the solid, a sufficient distance such that no substantial liquid backs up to the introduction of the solid. The solid and liquid are mixed to form a slurry, substantially in the absence of air. The slurry is propelled downstream, substantially in the absence of air, and atomized.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: May 7, 1991
    Assignee: Pfizer Inc.
    Inventor: Richard W. Korsmeyer
  • Patent number: 4820752
    Abstract: A process is described for infusing an additive into a polymer using a compressed fluid that is normally a gas at room temperature and pressure. The additive must have some degree of solubility in the compressed fluid and the solution of compressed fluid and additive must have some degree of solubility in the polymer. In accordance with the process, the solution of the normally gaseous fluid and additive and the polymer are brought into contact under pressure until a desired quantity of the solution is absorbed into the polymer. The compressed fluid then is diffused from the polymer leaving additive infused within the polymer. The process can be used, for example, to add a colorant to a polymer or to add a biocide, insect repellant, medication or other additives to a polymer for subsequent sustained release, or to introduce monomer and a polymerization initiator into a polymer for subsequent polymerization.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 11, 1989
    Inventors: Alan R. Berens, Gary S. Huvard, Richard W. Korsmeyer