Method of and apparatus for focusing ultrasonic waves in a focal line
US3974475A · kind A · utility
29Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Aug 28, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B11/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for focusing ultrasonic waves in a focal line by an ultrasonic optical system having at least one rotation-symmetrical, non-spherical acoustical reflection surface which together with an ultrasonic transducer element transmits an at least partially convergent ultrasonic field having an annular cross-section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.