Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Chemistry
Class Information
Number: 260/998.16
Name: Chemistry of carbon compounds > Sound record
Description: Products under Class 520 ... which are intended for use in making records of sound or which are used to reproduce sound (e.g., phonograph records, etc.) by other than magnetic means.










Patents under this class:

Patent Number Title Of Patent Date Issued
4827466 Information signal recording medium electrostatic capacitance type May. 2, 1989
4435802 Synthetic resin material, particularly surface material for phonograph records with a photograph or picture Mar. 6, 1984
4412941 Recording disc compositions comprising polymers of monovinyl-substituted hydrocarbons, conductive carbon black and lubricants Nov. 1, 1983
4299736 Conductive molding composition and discs therefrom Nov. 10, 1981
4283315 Gramophone record composition Aug. 11, 1981
4283310 P.V.C. Compositions for extrusion moulding Aug. 11, 1981
4241120 Video discs and molding compositions therefor Dec. 23, 1980
4228050 Conductive molding composition Oct. 14, 1980
4151132 Molding composition Apr. 24, 1979
4129536 Vinyl chloride based injection molding composition Dec. 12, 1978
3975321 Sound reproduction compositions Aug. 17, 1976
3960790 Disc record and method of compounding disc record composition Jun. 1, 1976











 
 
  Recently Added Patents
System and method for agitation of multiple specimen containers
Tuning peg for a stringed instrument
Dual-leadframe multi-chip package and method of manufacture
Generation of uniform fragments of nucleic acids using patterned substrates
Dual use photovoltaic system
Pharmaceutical and diagnostic compositions for use in the treatment and diagnosis of neurodegenerative diseases or amyloid diseases
Method and apparatus for the prevention of a service degradation attack
  Randomly Featured Patents
Spineless, reversible, fully encasing book cover
High resolution ultrasonic thickness gauge
High common mode rejection differential amplifier utilizing enhancement depletion field effect transistors
Malfunction detector
Edge-emitting semiconductor laser
Horizontal grapple
Mobile terminal
Winged wristband
Offline tubular blanket washing system
Wireless keyboard with improving radiation transmission