Resources Contact Us Home
Browse by Category: Main > Information Technology
Class Information
Number: 369/284
Name: Dynamic information storage or retrieval > Storage medium structure > Layered (e.g., permanent protective layer) > Radiation beam modified or controlling (e.g., photosensitve, optical track)
Description: Subject matter wherein at least one layer is either (a) responsive to incident radiation to vary a characteristic of such layer, or (b) has an information varied radiation characteristic to control a beam of radiation.

Sub-classes under this class:

Class Number Class Name Patents
369/285 With mask 48

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
4331966 Information storage device and method of forming same May. 25, 1982
4322839 Method and apparatus for recording and reproducing information on and from an optical disk Mar. 30, 1982
4320489 Reversible optical storage medium and a method for recording information therein Mar. 16, 1982
4319252 Optical data storage and recording medium having a replaceable protective coverplate Mar. 9, 1982
4318112 Optical recording disc Mar. 2, 1982
4304806 Information carrying discs Dec. 8, 1981
4304848 Method for photographic replication of information on an optical data storage medium Dec. 8, 1981
4300143 Thin protective overcoat layer for optical video disc Nov. 10, 1981
4290075 Optical recording device having several ablative recording layers Sep. 15, 1981
4287316 Transparent resin composition for information signal recording discs Sep. 1, 1981
4285056 Replicable optical recording medium Aug. 18, 1981
4272574 Optically readable information disc Jun. 9, 1981
4270132 Information record May. 26, 1981
4222070 Recording video information on a flexible master disc Sep. 9, 1980
4219704 Record playback apparatus for optical data records Aug. 26, 1980
4195312 Recorder and antireflective record blank having an optically passive transparent layer Mar. 25, 1980
4179532 Process for producing a disc-shaped information carrier which has information in the form of a beam-reflecting structure Dec. 18, 1979
4164754 Method of manufacturing a die designed to duplicate a video frequency signal recording Aug. 14, 1979
4152726 Record disk and method for producing the same with constant width groove May. 1, 1979
4139382 Photographic sound reproduction using silver diffusion transfer Feb. 13, 1979
4109045 Information recording medium Aug. 22, 1978
4090031 Multi-layered opitcal data records and playback apparatus May. 16, 1978
4061889 Film with light sound track carrying the stereophonic sound information; ribbon light valve for providing the light sound track as well as light sound adapter for reproducing the information r Dec. 6, 1977
4023185 Ablative optical recording medium May. 10, 1977
4010318 Probe forming electron optical column having means for examining magnified image of the probe source Mar. 1, 1977
4001493 Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article Jan. 4, 1977
3961315 Information recording system Jun. 1, 1976
3950621 Apparatus for optically reading a reflecting record carrier Apr. 13, 1976

1 2 3 4 5 6 7 8 9 10 11

  Recently Added Patents
FET device having ultra-low on-resistance and low gate charge
Portion of display panel or screen with an icon
3D structured memory devices and methods for manufacturing thereof
Method for testing multi-chip stacked packages
Cathode active material and lithium secondary battery comprising the same
Portable computer
Wireless updating of hearing devices
  Randomly Featured Patents
Color palette ram and D/A converter
Up-link SDMA receiver for WiMAX
Skirt hanger
Wind and sun barrier
Easily openable can lid having a movable portion
Aneurysm clip
Financial instruments, system, and exchanges (financial, stock, option and commodity) based upon realized volatility
Cyclically operable drive transmission
Photoresist removal using a polishing tool
Solder application technique