Patents by Inventor Marek Berkowski

Marek Berkowski 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).

  • Active material for the manufacture of laser rods
    Patent number: 4820445
    Abstract: An active material for the manufacture of laser rods, having the chemical composition expressed by the formula A.sub.1+x B.sub.1-y C.sub.3-x O.sub.7-0.5 x, wherein A is barium, strontium, calcium, or a mixture thereof; B is lanthanum, yttrium, or a mixture thereof; C is gallium, aluminum, or a mixture thereof; and x and y assume both positive and negative values from -0.12 to +0.12;; and as a dopant an active element chosen from the group consisting of praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, erbium, thulium and ytterbium in an amount of from 0.02 to 8.33 atomic percent.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: April 11, 1989
    Assignees: Polska Akademia Nauk, Instytut Fizyki, Polska Akademia Nauk, Instytut Niskich Temperature i Baden Strukturalnych
    Inventors: Wladyslaw Piekarczyk, Marek Berkowski, Gabriel Jasiolek, Witold Ryba-Romanowski, Mieczyslaw Chabiera