MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202641105502 A) filed by Saveetha Institute Of Medical And Technical Sciences on September 02, 2026, for Directional Passive Phone Speaker Amplifier A Bamboo Acoustic Chamber With Sliding Directional Shutters For Electricity-Free Smartphone Audio Amplification.
Inventors include Devi Manoj; Dr. S. Hanish Anand; and Dr Ramya Mohan.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: The utility patent titled "Directional Passive Phone Speaker Amplifier" discloses a passive, electricity-free acoustic amplification device for smartphones, constructed primarily from bamboo. The invention enhances smartphone audio output in terms of volume and clarity through an internal hollow acoustic chamber that reflects and directs sound waves emitted by the smartphone's built-in speaker. The device incorporates a top-mounted phone slot that aligns the smartphone speaker with the internal acoustic channel, sliding side shutters that allow the user to control the direction of sound output, and support geometry accommodating both vertical and horizontal smartphone orientations. No electronic components, external power sources, or Bluetooth connectivity are required. Bamboo is selected as the primary structural material for its high acoustic density, natural resonance characteristics, durability, lightweight structure, sustainability, and warm natural aesthetic. The compact desk- use form factor measures approximately 17 x 5 x 5 cm and is produced by CNC machining of a processed hardwood or bamboo block, with surface finishing by sanding and protective coating. Total production cost per unit is Z1,170. from the hig
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