Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11946919 | System for integrating multiple chemical sensor data to detect an unmeasured compound | James Liu, Thomas Negre, Praveen Sharma | 2024-04-02 |
| 11393321 | Photoelectrically-charging gas detector | Yiqing HANG, Hong T. Sun | 2022-07-19 |
| 11300550 | System for integrating multiple chemical sensor data to detect an unmeasured compound | James Liu, Thomas Negre, Praveen Sharma | 2022-04-12 |
| 11193909 | Low power photoionization detector (PID) | Wei Te YEH, Dan Zhang, Yuhui Xu, Kui Lu | 2021-12-07 |
| 10922943 | Multi-sensor input analysis for improved safety | Edukondalu Yarlagadda, Praveen Sharma, Thomas Negre, James Liu, Neal Muggleton +2 more | 2021-02-16 |
| 10665077 | Multi-sensor input analysis for improved safety | Edukondalu Yarlagadda, Praveen Sharma, Thomas Negre, James Liu, Neal Muggleton +2 more | 2020-05-26 |
| 10388137 | Multi-sensor input analysis for improved safety | Edukondalu Yarlagadda, Praveen Sharma, Thomas Negre, James Liu, Neal Muggleton +2 more | 2019-08-20 |
| 10089849 | Wireless mesh network gas detection real time location system | James Liu, Pengjun Zhao, Kai Ren, Xiaoxiong Li | 2018-10-02 |
| 10055971 | Safety communicator—convergence of body vitals and toxic gas parameters into smartphone app to enhance safety monitoring | Gowrishankar M R, Anand Tyagaraj, Shashikant Gulaguli, James Liu, Patrick Gonia +3 more | 2018-08-21 |
| 9459235 | Interference compensated photoionization detector | Prabhu Soundarrajan | 2016-10-04 |
| 7592603 | Combined radiation dosimeter and rate meter | Yuzhong Wang | 2009-09-22 |
| 7258773 | Solid polymer electrolyte oxygen sensor | Huafang Zhou, Hong T. Sun | 2007-08-21 |
| 6967485 | Automatic drive adjustment of ultraviolet lamps in photo-ionization detectors | Wenpeng Hsueh, Weili Yeh, Hong T. Sun | 2005-11-22 |
| 6734435 | Photo-ionization detector and method for continuous operation and real-time self-cleaning | Hong T. Sun | 2004-05-11 |
| 6661233 | Gas analyzer with real-time broadband monitoring and snapshot selective detection | Wenjun Yang | 2003-12-09 |
| 6509562 | Selective photo-ionization detector using ion mobility spectrometry | Wenjun Yang | 2003-01-21 |
| 6469303 | Non-dispersive infrared gas sensor | Hong T. Sun | 2002-10-22 |
| 6333632 | Alternating current discharge ionization detector | Wenjun Yang | 2001-12-25 |
| 6320388 | Multiple channel photo-ionization detector for simultaneous and selective measurement of volatile organic compound | Hong T. Sun | 2001-11-20 |
| 6313638 | Dual-channel photo-ionization detector that eliminates the effect of ultraviolet intensity on concentration measurements | Hong T. Sun | 2001-11-06 |
| 6225633 | Photo-ionization detector for volatile gas measurement and a method for self-cleaning the same | Hong T. Sun | 2001-05-01 |
| 5773833 | Photo-ionization detector for volatile gas measurement | — | 1998-06-30 |
| 5561344 | Photo-ionization detector for detecting volatile organic gases | — | 1996-10-01 |
| 5393979 | Photo-ionization detector for detecting volatile organic gases | — | 1995-02-28 |