Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B11/00—Diaryl- or thriarylmethane dyes
  • C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
  • C09B11/10—Amino derivatives of triarylmethanes
  • C09B11/12—Amino derivatives of triarylmethanes without any OH group bound to an aryl nucleus
  • C09B11/18—Preparation by oxidation
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G3/00—Gain control in amplifiers or frequency changers
  • H03G3/20—Automatic control
  • H03G3/22—Automatic control in amplifiers having discharge tubes
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
  • H04N5/52—Automatic gain control

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Details Of Television Scanning (AREA)
• Television Receiver Circuits (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19782124

Family Applications (1)

Country Status (6)

• 0
  • NL NL76307D patent/NL76307C/xx active
  • BE BE490791D patent/BE490791A/xx unknown
• 1949
  • 1949-08-22 GB GB21729/49A patent/GB662594A/en not_active Expired
  • 1949-08-23 CH CH276000D patent/CH276000A/de unknown
  • 1949-08-23 FR FR993703D patent/FR993703A/fr not_active Expired
  • 1949-08-23 DE DEP52657A patent/DE814460C/de not_active Expired

Also Published As

Similar Documents