Number | Name | Date | Kind |
---|---|---|---|
3362501 | Lenahan | Jan 1968 | A |
4398325 | Paiget et al. | Aug 1983 | A |
4671293 | Shaulov | Jun 1987 | A |
4694434 | von Ramm et al. | Sep 1987 | A |
4949310 | Smith et al. | Aug 1990 | A |
5065068 | Oakley | Nov 1991 | A |
5164920 | Bast et al. | Nov 1992 | A |
5295487 | Saitoh et al. | Mar 1994 | A |
5311095 | Smith et al. | May 1994 | A |
5329496 | Smith | Jul 1994 | A |
5522393 | Phillips et al. | Jun 1996 | A |
5539965 | Safari et al. | Jul 1996 | A |
5546807 | Oxaal et al. | Aug 1996 | A |
5548564 | Smith | Aug 1996 | A |
5625149 | Gururaja et al. | Apr 1997 | A |
5742060 | Ashburn | Apr 1998 | A |
5744898 | Smith et al. | Apr 1998 | A |
5796207 | Safari et al. | Aug 1998 | A |
5898793 | Karron et al. | Apr 1999 | A |
5938612 | Kline-Schoder et al. | Aug 1999 | A |
6014897 | Mo | Jan 2000 | A |
6104126 | Gilmore | Aug 2000 | A |
Number | Date | Country |
---|---|---|
0 697 257 | Feb 1996 | EP |
Entry |
---|
Fatemi et al., “Application of Hexagonal Arrays in Generation and Steering of Limited Diffraction Beams,” pp. 1531-1534, 1994 IEEE Ultrasonic Symposium. |
Fatemi, M. et al., “Efficient Generation of Limited Diffraction Beams by Hexagonal Arrays,” Biomedical Engineering Dept., Amirkabir University, Tehran, Iran, Ultrasonic Imaging, vol. 16, No. 1, Jan. 1994, p. 53. |
Fatemi, M., et al., “Application of Hexagonal Arrays in Generation and Steering of Limited Difraction Beams,” IEEE, 1994 Ultrasonic Symposium, pp. 1531-1534 Dec. 1994. |
Mills et al., “Combining Multi-Layers and Composites to Increase SNR for Medical Ultrasound Transducers,” at pp. 1509-1512, IEEE Ultrasonics Symposium Jan. 1996. |