Patents by Inventor Karl C. Enevold

Karl C. Enevold 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).

  • Encapsulation compositions and methods
    Patent number: 6020200
    Abstract: The present invention generally relates to novel encapsulation compositions and methods. In particular, the invention relates to stabilized microcapsule compositions which comprise a layer of a crosslinked, mixed functionality, polymer matrix, and methods for their preparation. The encapsulated compositions may comprise the crosslinked polymer matrix layer as an inner layer, an outer layer, or an intermediate layer of an overall encapsulated composition. The compositions will generally also comprise a biological material, e.g., cells, proteins, and the like, encapsulated within the composition. The compositions and methods of the invention are useful in a variety of applications, including cell culturing and transplant therapy.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: February 1, 2000
    Assignee: Metabolex, Inc.
    Inventor: Karl C. Enevold
  • Encapsulation compositions, and methods
    Patent number: 5916790
    Abstract: The present invention generally relates to novel encapsulation compositions and methods. In particular, the invention relates to stabilized microcapsule compositions which comprise a layer of a crosslinked, mixed functionality, polymer matrix, and methods for their preparation. The encapsulated compositions may comprise the crosslinked polymer matrix layer as an inner layer, an outer layer, or an intermediate layer of an overall encapsulated composition. The compositions will generally also comprise a biological material, e.g., cells, proteins, and the like, encapsulated within the composition. The compositions and methods of the invention are useful in a variety of applications, including cell culturing and transplant therapy.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: June 29, 1999
    Assignee: Metabolex, Inc.
    Inventor: Karl C. Enevold
  • Method of solution overcoating with gelling polymer
    Patent number: 5738876
    Abstract: The present invention generally relates to novel overcoating/encapsulation processes which are carried out in solution without the use of droplet generation devices. The processes may be used in the overcoating or encapsulation of a variety of materials, such as biological material, e.g., cells, proteins, etc., as well as pharmaceuticals. Compositions prepared using the methods of the present invention may find use in pharmaceutical formulation as well as coating biological material for a number of applications, including cell culturing and transplant therapy.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: April 14, 1998
    Assignee: Metabolex, Inc.
    Inventor: Karl C. Enevold