| |
 |
|
Class Information
Number: 428/64.2
Name: Stock material or miscellaneous articles > Circular sheet or circular blank > Recording medium or carrier
Description: Subject matter wherein the circular sheet or circular blank is a tangible object upon which an information signal is to be stored, the object having a characteristic which is, or may be, modified at positional increments in accordance with the time variation of information which is to be stored thereon.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5503890 |
Optical recording medium |
Apr. 2, 1996 |
| 5503889 |
Optical recording medium and production thereof |
Apr. 2, 1996 |
| 5500266 |
Spin-coating compensation for an optical storage medium with a substrate groove profile gradient |
Mar. 19, 1996 |
| 5496606 |
Magnetic recording medium |
Mar. 5, 1996 |
| 5496608 |
Optical recording medium |
Mar. 5, 1996 |
| 5492744 |
Optical information recording medium and composition for optical information recording film |
Feb. 20, 1996 |
| 5491045 |
Image dye combination for laser ablative recording element |
Feb. 13, 1996 |
| 5486396 |
Optical recording medium and production thereof |
Jan. 23, 1996 |
| 5437901 |
Parking card for the charge-related actuation of a parking barrier |
Aug. 1, 1995 |
| 5436047 |
Thin film magnetic recording disk comprising a metallic disk blank, a substantially non-magnetic Ni-Cr-O film having a textured surface and a magnetic film |
Jul. 25, 1995 |
| 5418029 |
Information recording medium and method |
May. 23, 1995 |
| 5346741 |
Multipack for wound rolls |
Sep. 13, 1994 |
| 5316806 |
Information memory medium and information recording/holding process making use of the medium |
May. 31, 1994 |
| 5314734 |
Information-recording medium |
May. 24, 1994 |
| 5186976 |
Method for producing sheet-formed recording medium |
Feb. 16, 1993 |
| 5141785 |
Recording medium |
Aug. 25, 1992 |
| 4985290 |
Protective coatings for polyacetylenic recording media |
Jan. 15, 1991 |
| 4960636 |
Biaxially oriented polyester film for floppy disk |
Oct. 2, 1990 |
| 4887178 |
Aligned stretched surface recording medium |
Dec. 12, 1989 |
| 4639908 |
High density information records made of conductive resin compositions comprising inorganic power stabilizers |
Jan. 27, 1987 |
| 4575838 |
Sandwich-type capacitive electronic discs |
Mar. 11, 1986 |
| 4532074 |
Capacitance electronic disc molding composition |
Jul. 30, 1985 |
| 4510593 |
Information disk of grooved, metal-coated crosslinked polymeric layer |
Apr. 9, 1985 |
| 4444849 |
Scratch resistant antistatic sound and picture carrier and process for its production |
Apr. 24, 1984 |
| 4405670 |
Capacitance electronic disc stamper having improved stain resistance and method for the manufacture thereof |
Sep. 20, 1983 |
| 4396660 |
Electroconductive resin composition and a videodisc record |
Aug. 2, 1983 |
| 4346469 |
High density information disc |
Aug. 24, 1982 |
| 4346468 |
High density information disc |
Aug. 24, 1982 |
| 4319252 |
Optical data storage and recording medium having a replaceable protective coverplate |
Mar. 9, 1982 |
| 4315878 |
Manufacture of blanks for recording discs utilizing coextrusion and blanks and records made thereby |
Feb. 16, 1982 |
| 4304806 |
Information carrying discs |
Dec. 8, 1981 |
| 4288481 |
Foil video discs |
Sep. 8, 1981 |
| 4275100 |
Video disc processing |
Jun. 23, 1981 |
| 4252848 |
Perfluorinated polymer thin films |
Feb. 24, 1981 |
| 4186229 |
Method of manufacturing base plates suitable for pressing records and plates manufactured by the same |
Jan. 29, 1980 |
| 4126726 |
Disc-shaped information carrier having information in the form of a beam-reflecting structure and a process for producing the same |
Nov. 21, 1978 |
| 4125654 |
Information signal recording disc |
Nov. 14, 1978 |
| 4109045 |
Information recording medium |
Aug. 22, 1978 |
| 4057831 |
Video record disc manufactured by a process involving chemical or sputter etching |
Nov. 8, 1977 |
| 4004080 |
Metal coating for video discs |
Jan. 18, 1977 |
|
|
|
