Location History:
- Reading, PA (US) (1985 - 1986)
- Hampstead, NH (US) (1989 - 1990)
Company Filing History:
4 out of 3,345 
1 out of 243 
1 out of 2,714 
Years Active: 1985-1990
Title: A Glimpse into the Innovations of David M. Embree
Introduction
David M. Embree is a prominent inventor based in Reading, PA, with a remarkable contribution to the field of electronics, specifically in the realm of capacitors and oscillators. With a total of six patents to his name, his work showcases innovative technology that enhances the performance and functionality of electronic devices.
Latest Patents
Among his latest inventions are the "Voltage Controlled Variable Capacitor and Oscillator Using It" and the "High Frequency VLSI Oscillator." The voltage variable capacitor (VVC) integrates seamlessly with a variable frequency crystal oscillator, all housed within a common substrate. This innovative design minimizes series resistance and allows for extensive capacitance variation by utilizing a well with a diffused region, making it highly efficient.
The "High Frequency VLSI Oscillator" utilizes a two-stage amplifier to achieve maximum frequency range in a voltage controllable crystal oscillator. The first stage employs an MOS transistor in a source-follower configuration to reduce input capacitance, while a bipolar transistor in the second stage provides necessary gain. This inventive oscillator design includes features such as a bidirectional voltage limiter that ensures oscillations maintain a symmetrical waveform, and the output buffer amplifier's bias can be dynamically adjusted for optimal duty cycles.
Career Highlights
David M. Embree has had an illustrious career, significantly shaped by his tenure at renowned organizations such as AT&T Bell Laboratories and AT&T Information Systems Inc. His work at these institutions has allowed him to be at the forefront of technological advancements in his field.
Collaborations
Throughout his career, David has collaborated with notable individuals, including Shawn Michael Logan and David R. Vogelpohl. These collaborations have further enriched his work and led to significant advancements in electrical engineering and the development of new technologies.
Conclusion
David M. Embree's contributions to the world of electronics through his innovative patents reflect his dedication and expertise. His inventions, particularly in voltage-controlled capacitors and oscillators, have made significant impacts in the industry, and his collaborations with esteemed colleagues further enhance the legacy he continues to build.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.