Awarded Patents

05/95   “Microwave Radiation Source,” X.-C. Zhang and D.H. Auston , US Patent No. 5,420,595

09/99   “Electro-Optic Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation,” X.-C.   Zhang, L. Libelo, and Q. Wu , US Patent No. 5,952,818

08/00   “Electro-Optical and Magneto-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation,” US Patent No. 6,111,416, X.-C. Zhang , L. Libelo, Q. Wu, Jennifer Riordan, and Fengguo Sun, Patent Corporation Treaty, international patent (Japan, Canada, European countries)

05/02   “Free-Space, Time-Domain Method for Measuring Thin Film Dielectric Properties,” US Patent No. 6,057,928, M. Li, X.-C. Zhang , and G.-C. Cho

06/02   “Electro-Optic Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation,” X.-C.   Zhang, L. Libelo, and Q. Wu, Canadian Patent No. 2,255,762

07/02   “Electro-Optical/Magneto-Optic Measurement of Electromagnetic Radiation Using Chirped Optical Pulse,” US Patent No. 6,414,473, X.-C. Zhang

01/03   “Electro-Optical and Magneto-Optical Sensing Apparatus and Method for Characterizing Free-Space Electromagnetic Radiation,” Japanese Patent No. 3388319

04/03   "Differential time domain spectroscopy method for measuring thin film dielectric properties", Zhiping Jiang and X.-C. Zhang , US Patent No. 6,556,306

06/03   "Method of characterizing free-space radiation using a chirped optical pulse" X.-C. Zhang and Zhiping Jiang , US Patent No. 6,573,700

02/04   “THz pulse measurement with an optical streak camera,” Zhiping Jiang and Xi-Cheng Zhang, US patent No. 6,690,001  

05/04   “Terahertz imaging with dynamic aperture”, Zhiping Jiang , Qin Chen , Xie George Xu , and Xi-Cheng Zhang, US Patent No. 6,734,974.

08/04   “Ultrafast all-optical switch using carbon nanotube polymer composites,” Yiping Zhao , Yuchuan Chen, Xi-Cheng Zhang, Nachiket R. Raravikar, Pulickel M. Ajayan, Toh-Ming Lu , Gwo-Ching Wang , and Linda S. Schadler,  US Patent No. 6,782,154.

01/05   “Electro-optic THz transceiver and photoconductive THz transceiver,” Zhiping Jiang , Qin Chen, Xi-Cheng Zhang, US Patent No. 6,844,552.

12/05   “T-ray microscope,” X.-C. Zhang , Tao Yuan, Jinghzhou Xu, US Patent No. 6,977,379.

03/06   “Terahertz Transceivers and Methods for Emission and Detection of Terahertz Pulses Using Such Transceivers,” validated in France, Germany, Great Britain and Italy,  European Patent, EP1281061.

08/06   “Semiconductor surface-field emitter for T-ray generation,” X.-C. Zhang , Jingzhou Xu, Kai Liu, US Patent No. 7,091.506.

08/06   “Fresnel lens tomographic imaging,” Shaohong Wang , Xi-Cheng Zhang, US Patent No. 7,087,902.

10/06   “Transmission mode terahertz computed tomography,” Bradley Ferguson , Shaohong Wang, Xi-Cheng Zhang, US Patent No. 7,119,339.

10/06   “Diffraction Mode Terahertz Tomography,” Bradley Ferguson , Shaohong Wang, Xi-Cheng Zhang, US Patent No. 7,129,491.

Patent Disclosures

1987    “Two-Dimensional, High-Speed Optical Time Division Multiplexing Processor,” X.-C. Zhang , G.R. Hulse and R.K. Jain, patent disclosure, (1987).

1991    “Generation of Steerable Terahertz Electromagnetic-Waves by Spatial Light Modulator,” D.H. Auston and X.-C. Zhang , patent disclosure, (1991).

1991    “Source of Directional Electromagnetic Radiation,” D.H. Auston and X.-C. Zhang , patent disclosure, (1991).

1991    “Near-field Terahertz Imaging with a Dynamic Aperture,” X-C Zhang, Q. Chen, Z. P. Jiang and George Xu . The case is RPI case number 624 and the provisional patent application number is 60/263,722.

1991    “Ultrafast All-optical Switch Using Single-walled Carbon Nanotube Polymer Composites” X-C Zhang, Zhao, Chen, Raravikar, Schadler, Ajayan, Lu, and Wang. The RPI case number is 644 and the provisional patent application number is 60/267,999.

2001    “Pulse Measurement with An Optical Streak Camera,” Z. P. Jiang and X.-C. Zhang , Serial No. 60/195,555, patent pending. Submitted to the U.S. Patent and Trademark Office on April 5, 2001 .

2001    “Terahertz Transceivers and Methods for Emission and Detection of Terahertz Pulses Using Such Transceivers,” X-C Zhang, Qin Chen , Z. P. Jiang, Masahiko Tani, Serial No. 60/195,708, patent pending. Submitted to PCT International Application, the U.S. PCT Receiving Office of Patent and Trademark Office on April 5, 2001 .

2001    “T-Ray Computed Tomograhy,” Patent (provisional), B. Ferguson, S. H. Wang, and X.-C. Zhang , filed on Nov. 13, (2001).

2002    “Terahertz Imaging with Dynamic Aperture,” Zhiping Jiang , Qin Chen , George Xu , and X.-C. Zhang , Feb. (2002).

2002    “Ultrafast All-optical Switch Using Carbon Nanotube Polymer Composites,” Yiping Zhao, Yuchuan Chen, Xi-Cheng Zhang, Nachiket R. Raravikar, Pulickel M. Ajayan, Toh-Ming Lu , Gwo-Ching Wang , and Linda S. Schadler, provisional application, patent filed, Feb. 12, 2002.

2003    PCT application "Detection of biospecific interactions using amplified differential time domain spectroscopy signal" with international search report.  The application was published on December  4, 2003 under publication number WO 03/100396.

2003    PCT application "Tera-hertz ray microscope" with international search report.  The application was published on November 20, 2003 under publication number WO 03/095991.

2003    PCT application "Fresnel lens tomographic imaging" with international search report.  The application was published on October 30, 2003 under publication number WO 03/089911.