Patents by Inventor Kenneth A. Larson

Kenneth A. Larson 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).

  • Phospholipid-coated microcrystals for the sustained release of pharmacologically active compounds and methods of their manufacture and use
    Patent number: 6423338
    Abstract: The present invention relates to pharmaceutical compositions for the sustained release of pharmacologically active compounds, and methods of their manufacture and use. The pharmaceutical compositions contain microcrystals of pharmacologically active compounds which are encapsulated within a phospholipid layer which contain a unique combination of phospholipids. The pharmaceutical compositions may be rendered suitable for injection. The microcrystals are of varying sizes. At least 50 percent of the microcrystals are from 0.5 &mgr;m and 3.0 &mgr;m in diameter, at least ten percent of the microcrystals are from 3.0 &mgr;m to 10 &mgr;m in diameter, and the composition may contain microcrystals which are greater than 10 &mgr;m in diameter. Methods of manufacturing the composition are disclosed, as well as various methods of administration.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: July 23, 2002
    Assignee: IDEXX Pharmaceuticals, Inc.
    Inventors: Kenneth A. Larson, William R. Campbell, Douglas I. Hepler
  • Phospholipid-coated microcrystals for the sustained release of pharmacologically active compounds and methods of their manufacture and use
    Patent number: 6180136
    Abstract: The present invention relates to pharmaceutical compositions for the sustained release of pharmacologically active compounds and methods of their manufacture and use. Sustained release times of 10-12 days have been achieved with the present invention. The present invention provides microcrystal compositions. The microcrystals comprise pharmacologically active compounds and are contained within a phospholipid layer which contains a unique combination of phospholipids. The present invention may be applied to a wide range of pharmaceutical compositions which may be rendered suitable for injection. The microcrystals are of varying sizes. At least 50 percent of the microcrystals are from 0.5 &mgr;m to about 3.0 &mgr;m in diameter, at least ten percent of the microcrystals are from about 3.0 &mgr;m to about 10 &mgr;m in diameter, and the composition contains microcrystals which are greater than 10 &mgr;m in diameter.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: January 30, 2001
    Assignee: Idexx Laboratories, Inc.
    Inventors: Kenneth A. Larson, William R. Campbell, Douglas I. Hepler
  • Deterrent composition, method of using same, and article coated thereby
    Patent number: 4097607
    Abstract: An animal deterrent composition comprises cinnamic aldehyde as the active ingredient in a diluent vehicle. Capsaicin may be included as an additional active ingredient.The composition is applied to various objects to deter attack or close approach by animals. Examples of the objects are wooden animal stalls, so as to prevent "cribbing, " bandages and plaster casts on animals to deter chewing thereof and sheep collars or sheep's wool, so as to repel predators, or in farm sheds to repel porcupines.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: June 27, 1978
    Inventor: Kenneth A. Larson