Patents by Inventor Carl J. Almer

Carl J. Almer 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).

  • Epoxide resin compositions and method
    Patent number: 5073595
    Abstract: A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a substituted fluorene unit in the composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: December 17, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Carl J. Almer, William J. Schultz
  • Epoxide resin compositions and method
    Patent number: 5045363
    Abstract: A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a 9,9-bis(hydroxphenyl)fluorene composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 3, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Carl J. Almer, William J. Schultz
  • Epoxide resin compositions and method
    Patent number: 4983672
    Abstract: A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a 9,9-bis(hydroxphenyl)fluorene composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: January 8, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Carl J. Almer, William J. Schultz
  • Epoxide resin compositions and method
    Patent number: 4980234
    Abstract: A method of improving epoxy resin compositions to provide a cured resin having improved glass transition temperature and toughness characteristics is provided. The method includes providing in an epoxy resin composition an effective amount of a substituted fluorene unit in the composition. The fluorene component acts as a chain extension agent and provides for increased glass transition temperature and less cross-link density. As a result, improved toughness occurs. In preferred applications a toughening agent is provided in the resin composition, to further enhance toughness. Preferred resin compositions, cured resins and methods of providing improved cured resins are also provided.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: December 25, 1990
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Carl J. Almer, William J. Schultz