Patents by Inventor Gian Luigi Ponzano

Gian Luigi Ponzano 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).

  • Magnetic information carrier having both ends free and apparatus for writing on and/or reading it
    Patent number: 4058847
    Abstract: A magnetic information carrier comprises a support or base strip made, for example, of plastic material or of light metal, on which a layer of magnetizable material is deposited.The support is pretensioned so as to assume at rest a stable configuration following a spiral path, without the auxiliary of a central core. This carrier is written on and/or read by an apparatus comprising a first cavity on which the carrier is placed. The carrier is fed by a capstan in front of a magnetic head and is pushed into a second cavity of the apparatus, wherein the carrier winds itself following a spiral configuration similar to the initial one. In a second embodiment, the carrier is mounted in a removable cartridge having one or two cavities.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: November 15, 1977
    Assignee: Ing. C. Olivetti & C., S.p.A.
    Inventor: Gian Luigi Ponzano