Patents by Inventor Juan Martinez Casais

Juan Martinez Casais 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 MICROFILTER FOR VDSL2 COMMUNICATION STANDARD
    Publication number: 20120263295
    Abstract: The active microfilter is essentially composed of an active part, which comprises a sign inverter circuit composed of an operational amplifier (13), two resistances and the impedance to be adapted (12), and a passive part which comprises capacitors, coils and resistances. The active microfilter is arranged in an auto-installable device which comprises a circuit for supplying the active part; wherein the aim is to eliminate the reflections caused by line sections, without adaptation, which interfere with the correct operation of the network when accessing broadband with the VDSL2 standard.
    Type: Application
    Filed: October 20, 2010
    Publication date: October 18, 2012
    Applicant: TELEFONICA, S.A.
    Inventors: Manuel Sanchez Yangüla, Pablo Alberto Yagüe Valentin, Juan Martinez Casais