Patents by Inventor Eino J. Luoma

Eino J. Luoma 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).

  • Microwave absorbers
    Patent number: 4038660
    Abstract: Microwave absorbers reduce radar cross-sections of airborne objects by attenuating reflectivity values. In Jaumann absorbers laminated layers are placed on the reflecting surfaces, the laminated layers being lossy layers separated by dielectric spacing layers. From the point of view of accuracy and reproducibility Jaumann absorbers have been difficult to construct. A mode of fabrication overcoming these difficulties is provided herein.
    Type: Grant
    Filed: August 5, 1975
    Date of Patent: July 26, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas M. Connolly, Eino J. Luoma
  • Microwave absorbers
    Patent number: 4027384
    Abstract: Microwave absorbers reduce radar cross-sections of airborne objects by attenuating reflectivity values. In Jaumann absorbers laminated layers are placed on the reflecting surfaces, the laminated layers being lossy layers separated by dielectric spacing layers. From the point of view of accuracy and reproducibility Jaumann absorbers have been difficult to construct. A mode of fabrication overcoming these difficulties is provided herein.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: June 7, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas M. Connolly, Eino J. Luoma