Incandescent Lamp

Patent Status: 

Patent Filed

Indian Patent Applicaton No: 


US Patent No: 

13/017, 303

US Patent No Date: 


Date Filed: 


Patent Category: 


Fabrication of a light bulb in which the conventional tungsten filament is replaced by multi walled CNT coated tungsten filament which possesses many advantages.

Key Features: 

  • For the synthesis of multiwall CNTs, simple thermal CVD is used.
  • CNTs are provided on tungsten filament.
  • The size of the substrate used is unlimited, thus can be used in structural applications.
  • The density of CNTs can be controlled in the process.


  • All bulb industries.
  • Electrical devices where ever energy efficient, high brightness, long life span and friendly to eye human eye is needed.

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