When it comes to home-grown innovation successfully competing in global arena, a few stand taller than STL. To take this legacy to the next level and to innovate for the future, STL has established the Centre of Excellence at (CoE) Aurangabad that exceeds global competitive benchmarks for network infrastructure development with its state-of-the-art research labs, prestigious international industry-academia R&D collaborations, finest researchers and engineers from all over the globe. We are very protective of our innovations and have built a patent portfolio of 425 patents.

  • An apparatus and a method for loading and holding hot optical fibre preform and precursors thereof

    (Patent: IN254036h, India)

  • A method for manufacturing soot porous body

    (Patent: IN254514, India)

  • Method for preparation of core rod assembly for overcladding and preform and fibre produced from such core rod assembly

    (Patent: IN223433, India)

  • Optical fibre having reduced polarisation mode dispersion (pmd) and method for producing the same

    (Patent: IN226536, India)

  • Storage and transportation device for storing and transporting optical fibre preform and precursors thereof

    (Patent: IN243681, India)

  • Optical fibre preform cone shaping or preparation method

    (Patent: IN239655, India)

  • A process for producing flawless optical fibre preform and a fibre produced therefrom

    (Patent: IN234573, India)

  • Suspension-cum-holding device for supporting an optical fibre preform

    (Patent: IN244287, India)

  • Dispersion optimised optical fibre for wideband optical transmission

    (Patent: IN241585, India)

  • Dispersion optimised optical fibre for wideband optical transmission

    (Patent: US7437045, USA)

  • A mandrel pulling mechanism for an apparatus to produce an optical fibre preform

    (Patent: IN237927, India)

  • Apparatus and method for fabricating optical fibre preform

    (Patent: IN234575, India)

  • Optical fibre having low and uniform optical attenuation loss along the entire length and method for fabricating the same

    (Patent: IN236667, India)

  • Optical fibre having low and uniform optical attenuation loss along the entire length and method for fabricating the same

    (Patent: CN101268021B, China)

  • Method for producing optical fibre having reduced hydrogen induced loss

    (Patent: IN241433, India)

  • Method for producing optical fibre having reduced hydrogen induced loss

    (Patent: CN101523257B, China)

  • Method for producing optical fibre preform having reduced cracks and deformation, and a preform produced therefrom

    (Patent: IN261360, India)

  • Optical fibre having desired waveguide parameters and method for producing the same.

    (Patent: IN252815, India)

  • A method for manufacturing a multimode optical fibre having higher bandwith and a multimiode optical fibre.

    (Patent: IN235142, India)

  • Method of manufacturing optical fibre preform having uniformly deposited shoot particles

    (Patent: IN240514, India)

  • A novel method for dehydration and sintering of an optical fibre preform

    (Patent: IN247162, India)

  • Method and apparatus for making straight core rod for manufacturing optical fibre

    (Patent: IN237300, India)

  • Method for producing optical fibre with reduced polarisation mode dispersion

    (Patent: IN238450, India)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: IN235626, India)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: CN1317212, China)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: TW94137816, Taiwan)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104B1, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: AT512937, Austria)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: TR201109006, Turkey)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Optical fibre with low attenuation at 1380 nm wavelength region and the method of producing the same

    (Patent: EP1783104, Europe)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: IN203463, India)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: US7310974, USA)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: EP1439150B1, Europe)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: CN1262502C, China)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: AT353857T, Austria)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: EP1439150B1, Europe)

  • Method for producing twisted optical fibre with reduced polarisation mode dispersion

    (Patent: EP1439150B1, Europe)

  • Dispersion optimised fibre with higher spot area

    (Patent: US7209620, USA)

  • Dispersion optimised fibre with higher spot area

    (Patent: CN1268952C, China)

  • Dispersion shifted fibre having low dispersion slope

    (Patent: IN208147, India)

  • Dispersion shifted fibre having low dispersion slope

    (Patent: US6879764, USA)

  • Dispersion shifted fibre having low dispersion slope

    (Patent: CN1262856C, China)