Location History:
- Poughkeepsie, NY (US) (1976 - 1977)
- Los Gatos, CA (US) (1977)
Company Filing History:
Years Active: 1976-1977
Title: Innovations of David DeWitt
Introduction
David DeWitt is a notable inventor based in Poughkeepsie, NY (US). He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work has been instrumental in advancing the capabilities of electronic devices.
Latest Patents
One of his latest patents is a method for forming a transistor that comprises layers of silicon dioxide. This innovative approach involves a detailed process of manufacturing an insulated gate field effect transistor. The method includes providing a semiconductor body portion of one type conductivity, applying an impurity masking layer, and subjecting the surface portions to an oxidation treatment. This results in the growth of silicon dioxide that forms a silicon mesa under the oxidation masking material.
Another significant patent is for a non-volatile metal nitride oxide semiconductor device. This device is designed for use within a memory cell and features a more heavily doped region directly under the channel of the depletion mode device. The operation of this device allows for charge storage in a nitride oxide interface, enabling it to convert to enhancement mode operation. The charge can be removed with specific voltage applications, showcasing the device's versatility.
Career Highlights
David DeWitt is currently employed at International Business Machines Corporation (IBM), where he continues to innovate in the semiconductor field. His work at IBM has allowed him to collaborate with other talented professionals and contribute to groundbreaking technologies.
Collaborations
Some of his notable coworkers include William Stanford Johnson and Kenneth Howard Christie. Their collective expertise has fostered an environment of innovation and creativity within their projects.
Conclusion
David DeWitt's contributions to semiconductor technology through his patents and work at IBM highlight his role as a significant inventor in the field. His innovative methods and devices continue to influence the development of modern electronics.