Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ultrasonic transducer










Image Number 10 for United States Patent #4881212.

This invention is basically, an ultrasonic transducer that can be configured with good reproducibility, that includes an acoustic impedance matching member that gradually changes the acoustic impedance, and which is characterized byAn acoustic impedance matching member(2) configured with multiple unit layers (21, 22, 23, . . . 2n), each layer being thinner than a quarter-wavelength of an ultrasonic wave, andeach unit layer having a laiminated structure make up of heavy metal(52) and plastic(51) layers with a thickness ratio set between them to change gradually from the unit layer close to the ultrasonic oscillator to the unit layer close to the subject.








 
 
  Recently Added Patents
Method and apparatus for the prevention of a service degradation attack
Dispenser
Determination of copy number variations using binomial probability calculations
Method and apparatus for verifiable generation of public keys
Extensible framework for client-based active network measurement
Centralized behavioral information system
Organic light emitting display device and method of manufacturing the same
  Randomly Featured Patents
Dyed polymethyl methacrylate bone cement and process for its production
Continuous casting tundish
Diaphragm support frames for acoustic transducers and method of assembly
Tray for holding paint
Methods for detecting sepsis
Dental floss
Electrically-conductive materials
Driving system and method for color sequential liquid crystal display (LCD)
Wrist and hand support device
Crystals of hydroxygallium phthalocyanine, method of preparing the crystals, photoconductive material comprising the crystals, and electrophotographic photoreceptor comprising the material