College of Engineering Patents

 

The following professors at the College of Engineering have all received patents in their field. The patents listed below come from several different fields of engineering, including: ceramic engineering, computer science, materials science, etc. To find additional information on any of the patents below, search the U.S. Patent Office Database by linking to: http://www.uspto.gov/patft/index.html

Jayant Baliga Donald Bitzer Ruben Carbonell
Robert F. Davis Jagdish Narayan Hayne Palmour

 


Dr. Jayant Baliga

Photo of Dr. Jayant Baliga.

 

Methods of forming silicon carbide semiconductor devices having buried silicon carbide conduction barrier layers therein

U.S. Patent Number 5,950,076

Description of Baliga's Patent #5,950,076 entitled, "Methods of forming silicon carbide semiconductor devices having buried silicon carbide conduction barrier layers therein."

Dr. Baliga is one of the most prolific inventors on campus. This patent, Dr. Baliga's 100th, was granted to him in 1999.

 

Gate Enhanced Rectifier

U.S. Patent Number 4,969,028

Click on the image to read more about the Gate Enhanced Rectifier Patent.
Description of Baliga's Patent #4,969,028 entitled, "Gate Enhanced Rectifier."
 
Power semiconductor devices having improved high frequency switching and breakdown characteristics
Description of Baliga's Patent #5,998,833 entitled, "Power semiconductor devices having improved high frequency switching and breakdown characteristics."
U.S. Patent Number 5,998,833
 
These charts depict some of the every day applications of Dr. Baliga's IGBT and Power MOSFET patents. They are used in a wide variety of items from the more complex factory robot used to assemble cars down to ordinary home appliances. An important application of the IGBT is its use in defibrillators, which save up to 100,000 lives per year. A chart depicting some of the everyday applications of Baliga's IGBT and Power MOSFET patents.  A chart depicting some of the everyday applications of Baliga's IGBT and Power MOSFET patents.

Dr. Donald Bitzer Photo of Dr. Donald Bitzer.
Dr. Donald Bitzer, Distinguished University Research Professor in Computer Science, holds a number of patents which include a plasma display panel, a high-quality modem and the first system to combine graphics and touch-sensitive screens, known as PLATO.

Method and apparatus for addressing and sustaining gas discharge panels

U.S. Patent Number 4,100,535

Click on the image to read information on one of Bitzer's patent. Description of Bitzer's Patent #4,100,535 entitled, "Method and apparatus for addressing and sustaining gas discharge panels."

 

Dr. Ruben G. Carbonell

Photo of Dr. Ruben G. Carbonell.

 

A letter dated March 18, 1996 from W. Mark Crowell, Asst. Vice Chancellor, Dir. Of Technology Administration and Development to DA letter to Dr. Ruben Carbonell acknowledging receipt of his patent.r. Ruben Carbonell acknowledging receipt of his patent for immunodiagnostic assay using liposomes carrying labels thereof on outer liposome surface.

 

Immunodiagnostic Assay Using Liposomes Carrying Labels Thereof On Outer Liposome Surface

U.S. Patent Number 5, 494, 803Description of Carbonell's Patent #5,494,803 entitled, "Immunodiagnostic Assay Using Liposomes Carrying Labels Thereof On Outer Liposome Surface."


Dr. Robert F. Davis  
Photo of Dr. Robert F. Davis.
     
     
     

Dr. Robert F. Davis has developed several patents in relation to his field of Ceramic Engineering. Most recently on April 18, 2000 he received a patent for his work:

Gallium nitride semiconductor structures including a lateral gallium nitride layer that extends from an underlying gallium nitride layer List of other publications by Dr. Robert F. Davis.Description of Davis' Patent #6,051,849 entitled, "Gallium nitride semiconductor structures including a lateral gallium nitride layer that extends from an underlying gallium nitride layer."

U.S. Patent No. 6,051,849

These background research materials and reports led to Dr. Davis' paFinal Technical Report Cover Sheet entitled, "High Surface Area Electrode Research."tent High surface area molybdenum nitride electrodes U.S. Patent No. 5,935,648, for use in high energy density energy storage devices.

High Surface Area Molybdenum Nitride Electrodes

Patent Number 5,935,648

Description of Davis' Patent #5,935,648 entitled, "High Surface Area Molybdenum Nitride Electrodes."Drawings that accompany Patent #5,935,648.


Dr. JagdPhoto of Jagdish Narayan.ish Narayan

Professor Jagdish "Jay" Narayan co-authored a research paper entitled "Titanium Nitride on Gallium Arsenide Epitaxial Heterostructures" with two other North Carolina State University researchers, Professor Jagannadham Kasichainula, and graduate student Tzvetlanka Jeleva. The paper, which won first prize in a national competition of the Electron Microscopy Society of America (EMSA), dealt with the development of futuristic materials structures for advanced microelectronic devices. The structures are fabricated by a thin-film growth mechanism called domain epitaxy, invented and patented in 1994 by Narayan, who holds additional patents.

Narayan has received many honors for his pioneering research in laser and plasma processing of materials, atomic-scale characterization and modeling of defects and interfaces, high-temperature superconductors, diamond and diamond-like materials, thin films and super-hard materials. In 1999 the Minerals, Metals and Materials Society (TMS) named him a TMS Fellow and life member, which is the society's highest honor. In the same year, Narayan received the prestigious ASM Gold Medal from the American Society for Metals (ASM) International.

To read about a few of Narayan's honors, view the images below:

Description of Distinguished Alumnus Award presented to Narayan.
Description of ASM Gold Medal presented to Narayan.
Narayan receives Distinguished Alumnus Award Narayan receives the ASM Gold Medal

 

Cover of the, "Journal of Applied Physics."To view an article published by J. Narayan, S.C. Jain, M. Willander, and R. VanOverstraeten in the Journal of Applied Physics in Febrary 2000 Issue, Volume 87, Number 3, entitled "III-nitrides: Growth, characterization, and properties," click on the journal icon:




 


Dr. Hayne PalmourPhoto of Dr. Hayne Palmour.

An Alumni and Professor Emeritus at NC State University, Hayne Palmour has recieved six patents for his work in Ceramic Engineering. In 1981 he received a patent for Olivine refractory bricks for heat storage applications. The bricks have thermal and physical properties suitable for use as a thermal energy storage unit in an electric thermal storage furnace and are characterized by having excellent thermal shock properties and resistance to spalling.

  Image of thermal shock test specimen.Click on this image to see thermal shock test specimen in greater detail.
     
These photographs illustrate another of Palmour's patents, Process for sintering finely divided particulates and resulting ceramic products U.S. Patent No. 3,900,542. Picture that illustrates Patent #3,900,542. Picture that illustrates Patent #3,900,542.

 

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