Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical recording disc










Image Number 2 for United States Patent #4891800.

An optical recording disc provided with a substrate permeable to a red laser beam for reading data recorded and having a single pass transmissivity of 85% or more in a wave length region of said laser beam and a light absorption edge of shorter wave length side positioned at 600 nm or more and capable of preventing a misregeneration due to an external light having been incident upon an optical system without reducing the regenerating performance.








 
 
  Recently Added Patents
Cooler
Method for media access controlling and system and method for channel time reservation in distributed wireless personal area network
Atmospheric treater with roller confined discharge chamber
Systems and methods for providing a video playlist
Bacterial superantigen vaccines
Kit and method for the capture of tumor cells
Trash receptacle
  Randomly Featured Patents
Process and device for treating waste by direct contact
Clamshell apparatus for electrochemically treating wafers
Radial ball lock-up device
Poly(ethylene phenylene ethynylene silylenes) comprising an inert spacer and methods for preparing same
Information processing method, device and program conduct
Frequency converter for an antenna
Variable displacement vane pump
Rotary hydraulic jack
Handbag
Corner detection device and corner detection method