Patents by Inventor Charles R. Degenhardt

Charles R. Degenhardt 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: 5292501
    Abstract: The present invention relates to compositions and methods for inhibiting plaque. In particular, this invention relates to oral compositions comprising: (a) a safe and effective amount of a carboxy-substituted polymer active agent having the formula ##STR1## or the salts thereof, wherein R is a C.sub.1 -C.sub.8 alkyl group, n is in the range of from 0 to about 2,000, m is in the range of from about 10 to about 2,000, and p is in the range of from about 1 to about 10; and (b) a pharmaceutically acceptable carrier. These compositions inhibit plaque without staining the tooth surfaces which are contacted with the composition.This invention also relates to a method of inhibiting plaque on tooth surfaces in the oral cavity. This method involves applying a safe and effective amount of the carboxy-substituted polymer active agent to the oral cavity. Such an application is typically made by applying the above-described oral compositions containing the carboxy-substituted polymer to the tooth surface.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: March 8, 1994
    Inventors: Charles R. Degenhardt, Barbara A. Kozikowski
  • Patent number: 5213789
    Abstract: The present invention relates to compositions and methods for inhibiting plaque. In particular, this invention relates to oral compositions comprising: (a) a safe and effective amount of a carboxy-containing copolymer having the formula ##STR1## or the salts thereof, wherein n is in the range of from about 200 to about 14,000, m is in the range of from about 2 to about 5,000, and p is in the range of from 1 to 3; and (b) a pharmaceutically acceptable carrier. These compositions inhibit plaque without staining the teeth which are contacted with the composition.This invention also relates to a method of inhibiting plaque on tooth surfaces in the oral cavity. This method involves applying a safe and effective amount of the carboxy-containing copolymer active agent to the oral cavity. Such an application is typically made by applying the above-described oral compositions containing the carboxy-containing copolymer to the oral cavity. The application does not stain the teeth on which it is made.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: May 25, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Charles R. Degenhardt, Barbara A. Kozikowski
  • Patent number: 5093170
    Abstract: The present invention relates to compositions and methods for inhibiting plaque. In particular, this invention relates to oral compositions comprising: (a) a safe and effective amount of a carboxy-substituted polymer active agent having the formula ##STR1## or the salts thereof, wherein R is a C.sub.1 -C.sub.8 alkyl group, n is in the range of from 0 to about 2,000, m is in the range of from about 10 to about 2,000, and p is in the range of from about 1 to about 10; and (b) a pharmaceutically acceptable carrier. These compositions inhibit plaque without staining the tooth surfaces which are contacted with the composition.This invention also relates to a method of inhibiting plaque on tooth surfaces in the oral cavity. This method involves applying a safe and effective amount of the carboxy-substituted polymer active agent to the oral cavity. Such an application is typically made by applying the above-described oral compositions containing the carboxy-substituted polymer to the tooth surface.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: March 3, 1992
    Assignee: The Procter & Gamble Co.
    Inventors: Charles R. Degenhardt, Barbara A. Kozikowski
  • Patent number: 5011913
    Abstract: Diphosphonate-derivatized macromolecules, such as proteins, suitable for use as technetium-99m-based scanning agents and as anticalcification agents are disclosed. The scanning agents are prepared by combining Tc-99m in a +3, +4 and/or +5 oxidation state with the diphosphonate-derivatized macromoleules. Also disclosed are pharmaceutical compositions containing these diphosphonate-derivatized macromolecules and methods for scintigraphic imaging using these diphosphonate-derivatized macromolecules labeled with Tc-99m.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: April 30, 1991
    Assignee: The Procter & Gamble Company
    Inventors: James J. Benedict, Charles R. Degenhardt, James W. Poser
  • Patent number: 5009882
    Abstract: The present invention relates to compositions and methods for inhibiting plaque. In particular, this invention relates to oral compositions comprising: (a) a safe and effective amount of a plaque-inhibiting carboxy starch polymer comprising the formula ##STR1## wherein W and X are independently selected from CH.sub.2 OH, CHO and CO.sub.2 H, or the neutralized carboxylic acid salts thereof, Y and Z are independently selected from CHO and CO.sub.2 H, or the neutralized carboxylic acid salts thereof, n is in the range of from about 5 to about 2500, m is in the range of from 0 to about 2500, provided that the sum of n and m ranges from about 5 to about 2500, and the degree of carboxylation of said active agent ranges from about 1 to about 3; and (b) a pharmaceutically acceptable carrier. These compositions inhibit plaque without staining the teeth which are contacted with the composition.This invention also relates to a method of inhibiting plaque on tooth surfaces in the oral cavity.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: April 23, 1991
    Assignee: The Proctor & Gamble Company
    Inventors: Charles R. Degenhardt, Barbara A. Kozikowski
  • Patent number: 4939284
    Abstract: Disclosed are tetraalkyl enthenylidenebisphosphonates and a method for their manufacture. These compounds are suitable for use as antimicrobial agents in combating a number of pathogenic microorganisms, such as bacteria, yeasts, viruses, fungi and protozoa, when used together with a pharmaceutically-acceptable carrier. Also disclosed is a method for treating infectious diseases by administering a safe and effective amount of these tetraalkyl ethenylidenebisphosphonates.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: July 3, 1990
    Assignee: The Procter & Gamble Company
    Inventor: Charles R. Degenhardt
  • Patent number: 4877603
    Abstract: Anticalculus and antiplaque oral care compositions containing geminal diphosphonate polymer anticalculus agents and a pharmaceutically acceptable carrier, and method for inhibiting formation of calculus and plaque in the oral cavity by treatment with geminal diphosphonate polymers.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: October 31, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Charles R. Degenhardt, Barbara A. Kozikowski
  • Patent number: 4830847
    Abstract: Diphosphonate-derivatized macromolecules, such as proteins, suitable for use as technetium-99m-based scanning agents and as anticalcification agents are disclosed. The scanning agents are prepared by combining Tc-99m in a +3, +4 and/or +5 oxidation state with the diphosphonate-derivatized macromolecules. Also disclosed are pharmaceutical compositions containing these diphosphonate-derivatized macromolecules and methods for scintigraphic imaging using these diphosphonate-derivatized macromolecules labeled with Tc-99m.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: May 16, 1989
    Assignee: The Procter & Gamble Company
    Inventors: James J. Benedict, Charles R. Degenhardt, James W. Poser
  • Patent number: 4820698
    Abstract: Disclosed are tetraalkyl enthenylidenebisphosphonates and a method for their manufacture. These compounds are suitable for use as antimicrobial agents in combating a number of pathogenic microorganisms, such as bacteria, yeasts, viruses, fungi and protozoa, when used together with a pharmaceutically-acceptable carrier. Also disclosed is a method for treating infectious diseases by administering a safe and effective amount of these tetraalkyl ethenylidenebisphosphonates.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: April 11, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Charles R. Degenhardt, Duane L. Charbonneau
  • Patent number: 4504462
    Abstract: A process for making a lyophilized composition, useful for skeletal imaging containing diphosphonates, stannous reductant, and an ascorbate or reductate stabilizer. The process comprises (1) preparing an aqueous solution of diphosphonate, reductant, and stabilizer, (2) adjusting the pH of the solution formed in step one to a pH in the range from about 5.5 to about 6.5, and (3) lyophilizing the pH adjusted solution.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: March 12, 1985
    Assignee: Mallinckrodt, Inc.
    Inventors: Barry F. Van Duzee, Charles R. Degenhardt
  • Patent number: 4440738
    Abstract: Stable compositions, useful as technetium-99m-based imaging agents, comprise reductic acid or certain structurally-related compounds in combination with a pertechnetate reductant or dissolved in pertechnetate-99m solution. The compositions are especially useful, in combination with a phosphate or phosphonate bone-targeting carrier, for skeletal imaging.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: April 3, 1984
    Assignee: Mallinckrodt, Inc.
    Inventors: Mahdi B. Fawzi, James J. Benedict, Joseph E. Bugaj, Charles R. Degenhardt, Barry F. Van Duzee
  • Patent number: 4259249
    Abstract: A method of preparing hydroxyl substituted ammonio carboxylates comprising a single step of reacting an epoxy ester with a tertiary amine in aqueous alcohol, yielding directly said hydroxyl substituted ammonio carboxylates. The hydroxyl substituted ammonio carboxylates are useful as detersive surfactants and as oral anti-ulcer agents.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: March 31, 1981
    Assignee: The Procter & Gamble Company
    Inventor: Charles R. Degenhardt