Patents by Inventor Atanas A. Valev

Atanas A. Valev 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).

  • Patent number: 4609108
    Abstract: Method of and apparatus for sorting tobacco into two groups: a group of satisfactory leaves and a group of unsatisfactory leaves. Tobacco leaves, spaced so that they pass one by one along a conveyor, travel through a zone illuminated by pulsed polychromatic light and an optical sensor receiving light reflected from the tobacco leaves. In a manner which is synchronous with the pulsations of light there is measured the quantity of the light reflected by each of the leaves in the green, orange, red, and infrared areas of the spectrum. Sums are formed from the values corresponding to the reflected light in such areas of the spectrum and relations are obtained between sums corresponding to the green and orange as well as to the red and infrared ranges, of time in which the value of the reflected light in the infrared area is greater than a value preliminarily preset by the operator.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: September 2, 1986
    Assignee: Institute Po Technicheska Kibernetika I Robotika
    Inventors: Vladislav N. Hristozov, Hristo M. Ribarov, Zdravko B. Marchev, Spas N. Markov, Atanas A. Valev