Patents by Inventor Chester L. Leach

Chester L. Leach 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).

  • Biocompatible compounds for sustained release pharmaceutical drug delivery systems
    Patent number: 7687054
    Abstract: Methods, compounds, and medicinal formulations utilizing biocompatible polymers for delivery of a drug, particularly for solubilizing, stabilizing and/or providing sustained release of drug from topical, implantable, and inhalation systems. Many of the methods, compounds, and medicinal formulations are particularly suitable for oral and/or nasal inhalation and use polymers of the formula —[X—R1—C(O)]— wherein each R1 is an independently selected organic group that links the —X— group to the carbonyl group, and each X is independently oxygen, sulfur, or catenary nitrogen.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: March 30, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: James S. Stefely, David W. Schultz, Chester L. Leach, Daniel C. Duan
  • Biocompatible compounds for sustained release pharmaceutical drug delivery systems
    Publication number: 20020164290
    Abstract: Methods, compounds, and medicinal formulations utilizing biocompatible polymers for delivery of a drug, particularly for solubilizing, stabilizing and/or providing sustained release of drug from topical, implantable, and inhalation systems. Many of the methods, compounds, and medicinal formulations are particularly suitable for oral and/or nasal inhalation and use polymers of the formula —[X—R1—C(O)]— wherein each R1 is an independently selected organic group that links the —X— group to the carbonyl group, and each X is independently oxygen, sulfur, or catenary nitrogen.
    Type: Application
    Filed: February 18, 2002
    Publication date: November 7, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: James S. Stefely, David W. Schultz, Chester L. Leach, Daniel C. Duan
  • Medicinal aerosol solution formulation with biocompatible polymer
    Patent number: 6416742
    Abstract: Methods, compounds, and medicinal formulations utilizing biocompatible polymers for delivery of a drug, particularly for solubilizing, stabilizing and/or providing sustained release of drug from topical, implantable, and inhalation systems. Many of the methods, compounds, and medicinal formulations are particularly suitable for oral and/or nasal inhalation and use polymers of the formula —[X—R1—C(O)]— wherein each R1 is an independently selected organic group that links the —X— group to the carbonyl group, and each X is independently oxygen, sulfur, or catenary nitrogen.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: July 9, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: James S. Stefely, David W. Schultz, Luke E. Schallinger, Craig A. Perman, Chester L. Leach, Daniel C. Duan
  • Biocompatible compounds for pharmaceutical drug delivery systems
    Patent number: 6126919
    Abstract: Methods, compounds, and medicinal formulations utilizing biocompatible polymers for delivery of a drug, particularly for solubilizing, stabilizing and/or providing sustained release of drug from topical, implantable, and inhalation systems. Many of the methods, compounds, and medicinal formulations are particularly suitable for oral and/or nasal inhalation and use polymers of the formula --[X--R.sup.1 --C(O)]-- wherein each R.sup.1 is an independently selected organic group that links the --X-- group to the carbonyl group, and each X is independently oxygen, sulfur, or catenary nitrogen.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: October 3, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: James S. Stefely, David W. Schultz, Luke E. Schallinger, Craig A. Perman, Chester L. Leach, Daniel C. Duan
  • Aerosol formulation containing a diol-diacid derived dispersing aid
    Patent number: 6042811
    Abstract: A medicinal aerosol formulation containing a particulate drug and a diol/diacid condensate as a dispersing aid.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: March 28, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Daniel C. Duan, James S. Stefely, David W. Schultz, Chester L. Leach
  • Aerosol formulation containing an ester-, amide-, or mercaptoester-derived dispersing aid
    Patent number: 5725841
    Abstract: A medicinal aerosol formulation containing a particulate drug and a dispersing aid derived from a hydroxyacid, a mercapto acid, or an amino acid.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: March 10, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Daniel C. Duan, James S. Stefely, David W. Schultz, Chester L. Leach
  • Aerosol formulation containing an ester-, amide-, or mercaptoester-derived dispersing aid
    Patent number: 5569450
    Abstract: A medicinal aerosol formulation containing a particulate drug and a dispersing aid derived from a hydroxyacid, a mercapto acid, or an amino acid.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: October 29, 1996
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Daniel C. Duan, James S. Stefely, David W. Schultz, Chester L. Leach