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 detection of the remote origin fraction of radon present in a measuring site
Method and apparatus for distributing promotional materials
Nonvolatile semiconductor memory device
Calendar integration methods and systems for presentation of events having combined activity and location information
System and method for managing investment funds
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Circuitry testing module and circuitry testing device
  Randomly Featured Patents
Noise control apparatus for internal combustion engine
Cable laying vibratory plow assembly
Image pickup apparatus
Application specific integrated circuit for a serial data bus
Automated plant analysis method, apparatus, and system using imaging technologies
Circuit and method for dynamically controlling op-amp offset for photodetector applications
Method and apparatus for optimizing the handling of synchronous requests to a coupling facility in a sysplex configuration
Ansamycin antibiotic
Splitting a floating-point stack-exchange instruction for merging into surrounding instructions by operand translation
Conveyor system for conveying coal out of coal mine