Location History:
- Penn Hills Township, Allegheny County, PA (US) (1996)
- Penn Hills Twp., PA (US) (1997)
- New Smyrna Beach, FL (US) (1998)
- Pittsburgh, PA (US) (1986 - 1999)
- Penn Hills Township, PA (US) (1997 - 1999)
- Port Orange, FL (US) (1998 - 2016)
Company Filing History:
7 out of 3,385 
4 out of 71 
2 out of 8,033 Years Active: 1986-2016
Title: The Innovative Contributions of Donovan L Barrett
Introduction
Donovan L Barrett is a notable inventor based in Port Orange, Florida, recognized for his significant contributions to the field of materials science. With a total of 13 patents to his name, Barrett has made strides in the synthesis of advanced materials, particularly silicon carbide.
Latest Patents
One of Barrett's latest patents is a method for synthesizing ultrahigh-purity silicon carbide. This innovative process involves positioning low-density, gas-permeable bulk carbon and a mixture of elemental silicon and carbon within a graphite crucible. The mixture is then heated to remove adsorbed gases and volatiles, followed by a reaction that forms as-synthesized silicon carbide. The process culminates in the sublimation of the as-synthesized SiC, which reacts with the bulk carbon to create polycrystalline SiC material.
Another significant patent by Barrett focuses on intra-cavity gettering of nitrogen in silicon carbide crystal growth. This method entails heating a crystal growth chamber to a specific temperature under vacuum conditions, followed by exposure to inert gas. The process allows for the vaporization of source material, which then deposits on a seed crystal, enhancing the quality of the silicon carbide produced.
Career Highlights
Throughout his career, Barrett has worked with prominent companies such as Northrop Grumman Systems Corporation and II-VI Incorporated. His work in these organizations has contributed to advancements in materials technology and has positioned him as a key figure in his field.
Collaborations
Barrett has collaborated with notable colleagues, including Richard H Hopkins and Hudson McDonald Hobgood. These partnerships have fostered innovation and have led to the development of cutting-edge technologies in materials science.
Conclusion
Donovan L Barrett's contributions to the field of materials science, particularly through his patents and collaborations, highlight his role as an influential inventor. His work continues to impact the industry and pave the way for future innovations in silicon carbide synthesis and crystal growth.