This inventor holds 1 USPTO granted patent. Top assignee: USA as Represented by Secretary of the Navy. Active years: 2001.
Company Filing History:
Years Active: 2001
Title: The Innovations of Philip R Hammar
Introduction
Philip R Hammar is a notable inventor based in Baltimore, MD (US). He has made significant contributions to the field of semiconductor technology, particularly in the development of devices that enhance nonvolatile memory applications. His work is characterized by a focus on innovative solutions that integrate ferromagnetic materials with semiconductors.
Latest Patents
Hammar holds a patent for the "Magnetoresistive spin-injection diode." This invention is designed to be suitable for nonvolatile memory applications. The diode consists of a semiconducting channel capable of carrying current, a single ferromagnetic layer, and a barrier layer that protects the integrity of the semiconducting layer. This barrier layer also inhibits interdiffusion between the ferromagnetic material and the semiconductor. During the readout process, the output modulation can be sensed either as the interface resistance or as the output voltage when current flows through the channel. Additionally, two of these diodes can be combined to form a spin-injected field-effect transistor, which features a unique configuration of ferromagnetic layers and a gate that controls the electrical paths between them.
Career Highlights
Hammar is currently associated with the United States Navy, where he contributes his expertise in semiconductor technology. His work has been instrumental in advancing the capabilities of nonvolatile memory systems, which are critical for various applications in modern electronics.
Collaborations
Hammar has collaborated with notable colleagues such as Brian R Bennett and Mark B Johnson. These partnerships have fostered innovation and have led to advancements in the field of semiconductor devices.
Conclusion
Philip R Hammar's contributions to the field of semiconductor technology, particularly through his patented inventions, highlight his role as a significant innovator. His work continues to influence the development of advanced memory systems, showcasing the importance of innovation in technology.