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










Image Number 4 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
Instrumenting configuration and system settings
Listing recommendation using generation of a user-specific query in a network-based commerce system
Method of targeting hydrophobic drugs to vascular lesions
Semiconductor pressure sensor
Method and apparatus for producing homogeneous magnetic fields
Light barrier and method for detecting objects
Information processing apparatus, information processing method, and program
  Randomly Featured Patents
Creeping plant supporting frame assemblies
Variable radius segment gear in the form of a circular arc and a gear mechanism for such gear
Padded undershirt
Proximity monitoring communication system
Compositions and methods for detecting Borrelia afzelii
Nozzle sterilizer providing outer and inner annular concentric cooling jets
Image processing enabling reduction of processing time for data conversion
Backbone-free low transgene copy transgenic plants
System to roll at least two sections in blocks of fast rolling mill stands
Method of micro-architectural implementation of interface between bist state machine and tester interface to enable bist cycling