Patents by Inventor Melvin Klein

Melvin Klein 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).

  • Successive-approximation analog-to-digital converter using Josephson devices
    Patent number: 3949395
    Abstract: A comparison means has plural Josephson devices each controlled by an analog input current and an opposing subtraction current. A subtraction means has a series circuit of Josephson devices arranged in groups, each group being switched by one of the comparison devices. The subtraction current is proportional to the number of devices switched in the series circuit. An output means has a string of Josephson devices each providing an output bit from one of the comparison devices. Fixed bias currents control the effective thresholds of the comparison devices.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: April 6, 1976
    Assignee: International Business Machines Corporation
    Inventor: Melvin Klein