Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Color picture tube and method for manufacturing the same










Image Number 2 for United States Patent #4708680.

A color picture tube comprises a shadow mask which is formed to, oppose at a small gap therefrom, a phosphor screen formed on the inner surface of a panel. The shadow mask comprises a sheet of a nickel-containing iron alloy which contains 0.1% by weight or less of manganese and having an austenite grain number of 7 or less both within and at surfaces of the sheet, the austenite grain number being defined by JIS G 0551 of the Japanese Industrial Standards. The iron alloy sheet is annealed in a vacuum of 10.sup.-1 Torr or less at a temperature of 1,000.degree. C. or higher prior to formation into the shadow mask.








 
 
  Recently Added Patents
Method for increasing expression of active tumor necrosis factor receptor family member-Ig fusion proteins
Advanced CAPTCHA using images in sequence
Method for the synthesis of an array of metal nanowire capable of supporting localized plasmon resonances and photonic device comprising said array
Method and device for authenticating transmitted user data
Operation controlling apparatus
Variety corn line LIC7382
Bitter taste receptors
  Randomly Featured Patents
Lightweight structure particularly for an aircraft
Toy airplane
Reverse hydrocyclone cleaner for removing light contaminants from pulp slurry
Filter assembly with conformal cartridge support structure
Method for oxidizing hydrocarbons
Core clock correction in a 2/N mode clocking scheme
Shielding device for microwave cooking
Aviation gasoline formulation
Higher fatty acid derivatives of salicylic acid and salts thereof
Color Braun tube