Patents by Inventor Adrian C. Selden

Adrian C. Selden 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).

  • Gas lasers
    Patent number: 4344174
    Abstract: A laser having a gaseous mixture including carbon dioxide as the lasing medium, wherein the lasing medium is cooled to a temperature such that the thermal population of the lower energy level of an output lasing transition between a higher energy level and a lower energy level of the carbon dioxide molecule is reduced, and the lasing medium is initially energised to create the population inversion which results in the lasting transition at a rate such that significant thermal population of the lower energy level is avoided.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: August 10, 1982
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Ian J. Spalding, Adrian C. Selden, Errico Armandillo