Patents by Inventor Charles W. Richard, Jr.

Charles W. Richard, 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).

  • Patent number: 11929428
    Abstract: An apparatus includes a substrate; a group III-Nitride barrier layer; a source electrically coupled to the group III-Nitride barrier layer; a gate on the group III-Nitride barrier layer; a drain electrically coupled to the group III-Nitride barrier layer; a p-region being arranged at or below the group III-Nitride barrier layer; and a recovery enhancement circuit configured to reduce an impact of an overload received by the gate. Additionally, at least a portion of the p-region is arranged vertically below at least one of the following: the source, the gate, an area between the gate and the drain.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: March 12, 2024
    Assignee: Wolfspeed, Inc.
    Inventors: Thomas J. Smith, Jr., Saptharishi Sriram, Charles W. Richards, IV
  • Patent number: 5351196
    Abstract: The present invention relates to processes for the automatic generation of numerical control (NC) tool paths in a CAD/CAM environment. The present invention operates on mechanical parts described as solid models. The process employs well-defined solid models of the part to be machined and the raw stock from which it will be machined. The volumetric difference between the stock and the part defines the material (delta volumes) that must be cut away during the actual machining process. Delta volumes are solid models, and users (or an expert system) can subdivide delta volumes into smaller volumes that are consistent with a manufacturing process plan. A delta volume and a user-defined strategy for machining the delta volume are then input to NC algorithms. The algorithms generate NC tool paths that remove as much delta volume material as possible. Tool volumes are automatically generated from NC tool paths to represent the volume traversed by the cutting tool.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: September 27, 1994
    Assignee: Spacial Technology, Inc.
    Inventors: Richard M. Sowar, William C. Heiny, Paul C. Olsen, Mark R. Hotchkiss, Thomas L. Dixon, Charles W. Richard, Jr., Michael D. Raines