Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7861574 | Photoacoustic spectroscopy system and technique for remote sensing of explosives and toxic chemicals | Apostolos C. Raptis, Hual-Te Chien | 2011-01-04 |
| 7644606 | Photoacoustic spectroscopy system and technique for remote sensing of explosives and toxic chemicals | Apostolos C. Raptis, Hual-Te Chien | 2010-01-12 |
| 6969851 | Ion-mobility spectrometry sensor for NOx detection | Apostolos C. Raptis, Hual-Te Chien | 2005-11-29 |
| 6279378 | Ultrasonic gas analyzer and method to analyze trace gases | Hual-Te Chien, Apostolos C. Raptis | 2001-08-28 |
| 5752302 | Method and apparatus for sizing and separating warp yarns using acoustical energy | Hual-Te Chien, Apostolos C. Raptis, David S. Kupperman | 1998-05-19 |
| 5676015 | Cavitation controlled acoustic probe for fabric spot cleaning and moisture monitoring | Hual-Te Chien, Apostolos C. Raptis | 1997-10-14 |
| 5665907 | Ultrasonic imaging system for in-process fabric defect detection | Hual-Te Chien, William P. Lawrence, Apostolos C. Raptis | 1997-09-09 |
| 5606113 | Acoustic methods to monitor sliver linear density and yarn strength | Hual-Te Chien, Apostolos C. Raptis | 1997-02-25 |
| 5365778 | Method for measuring liquid viscosity and ultrasonic viscometer | William P. Lawrence, Hual-Te Chien, Apostolos C. Raptis | 1994-11-22 |
| 5169188 | Ceramic tamper-revealing seals | David S. Kupperman, Apostolos C. Raptis | 1992-12-08 |
| 4598593 | Acoustic cross-correlation flowmeter for solid-gas flow | Apostolos C. Raptis | 1986-07-08 |