Patents by Inventor Laird Schearer

Laird Schearer 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).

  • Laser-pumped helium magnetometer
    Patent number: 4806864
    Abstract: A magnetometer comprises a transparent spherical photocell (1) filled with natural helium 4He. A laser (2) of the LNA (lanthanum-neodymium aluminate) type excites the photocell. An oscillator (3) generates a soft discharge inside the photocell (1). The electronic magnetic resonance frequency of helium atoms in the excited metastable state is determined on the basis of the light (FT) transmitted by the photocell, under excitation by a radio electric field, and the magnetic induction is thereby found.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: February 21, 1989
    Assignee: Centre National De La Recherche Scientifique
    Inventors: Laird Schearer, Michele Leduc, Franck Laloe, Joseph M. Hamel