Patents by Inventor Richard R. Lathrop, Jr.

Richard R. Lathrop, Jr. 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).

  • Surge protector for telecommunications terminals
    Patent number: 5057964
    Abstract: A surge protector, particularly for protecting components in a telecommunication system, has a thin ceramic substrate on a surface of which is formed a surge protector resistor having a spiral pattern in the form of a double spiral having two parallel resistor paths in series, the width of the paths and the distance between adjacent path lengths being relatively narrow. Resistance trimming links are provided for increasing the length of a resistor path, there being substantially even distribution of surge effects under surge conditions.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: October 15, 1991
    Assignee: Northern Telecom Limited
    Inventors: David K. Bender, Richard R. Lathrop, Jr.
  • Surge protector for telecommunications systems
    Patent number: 4999731
    Abstract: A surge protector, particularly for protecting components in a telecommunications system, has a thin ceramic substrate on a surface of which is formed a surge protection resistor having a serpentine path extending over the substrate, the width of the path and the distance between adjacent path lengths being relatively narrow. Resistance trimming means are provided, positioned such that there is a substantially isothermal heat distribution over the substrate under surge conditions.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: March 12, 1991
    Assignee: Northern Telecom Limited
    Inventors: David K. Bender, Richard R. Lathrop, Jr.