1. A. Chakravorty, Mrinal Kaushik and V. Jindal, Marine Combat Robot with Turbojet Propulsion, Wing-Assisted Manoeuvrability, and Remote Sensing, Application Number: 475013-001, CBR Number: 221407, Filed: 26th September 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: This design presents a novel robotic platform for marine operations, utilizing turbojet engines, aerodynamic surfaces, and advanced sensors for navigation, target detection, and minimizing human casualties in warfare.

2. A. Chakravorty and Mrinal Kaushik, Three-Stage Martian Parachute System, Application Number: 475001-001, CBR Number: 221400, Filed: 26th September 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: This innovative parachute design for Mars eliminates retro-thrusters, enhancing efficiency and reducing costs, promoting sustainable exploration and reallocating resources for scientific research and technology advancements on future missions.

3. T. Paramesh, Tamal Jana and Mrinal Kaushik, Modified Elliptic Bypass Dual Throat Nozzle, Application Number: 472129-001, CBR Number: 219327, Filed: 2nd September 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The invention introduces an elliptic bypass dual throat nozzle for aircraft propulsion, enhancing fluidic thrust vectoring without mechanical parts. This design reduces weight and maintenance while utilizing the elliptical shape for better jet mixing and allows for effective pitch and yaw control.

4. Sourabh Koshta, Mrinal Kaushik and Tamal Jana, Modified Four-blade Liam F1 Wind Turbine, Application Number: 469524-001, CBR Number: 217579, Filed: 12th August 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The shift to sustainable energy relies on wind power, but traditional turbines face challenges in urban and low-wind areas. A modified 4-blade version of the Liam F1 wind turbine aims to enhance power output and aerodynamic efficiency, making it suitable for underutilized wind flows and boosting renewable energy solutions.

5. Sourabh Koshta and Mrinal Kaushik, Butterfly-Profiled Wingnut-Shaped Wind Turbine Blades, Application Number: 469525-001, CBR Number: 217580, Filed: 12th August 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The Butterfly-Profiled Wingnut-Shaped Wind Turbine Blades are designed for low-wind-speed environments. Featuring a nature-inspired aerodynamic structure, they enhance lift and efficiency with a variable-curvature profile. This innovative design reduces torque needed for rotation, allowing for effective energy capture in urban and rural areas where traditional turbines are impractical.

6. Praveen Kumar, Manish Pandey, Shuvro Prosun Sarker and Mrinal Kaushik, Cooling Mug with Reusable Magnetic Frozen Core for Dilution - Free Chilling, Application Number: 459831-001, CBR Number: 211004, Filed: 22nd May 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: A magnetic frozen insert cooling mug offers an innovative solution for beverage cooling without dilution. Its design features a glass insert filled with cooling fluid, stabilized by a magnet. This reusable option effectively maintains beverage temperature while preserving flavor and quality, ideal for various cold drinks.

7. Chukka Vinay Kumar, Manish Pandey, Mrinal Kaushik and Gaurav Misuriya, Spike Mat, Application Number: 459258-001, CBR Number: 210596, Filed: 17th May 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The Spike Mat is a sustainable scour protection system made from recycled tires and plastics. It disrupts horseshoe vortex formation at bridge piers, reducing sediment removal and turbulence. This low-cost, modular solution promotes environmental sustainability while offering durability and adaptability for various hydraulic structures in erosive conditions.

8. Manish Pandey, Mrinal Kaushik, Chukka Vinay Kumar, and Kondeti Lakshmi Vasudev, Angled Vane-Stepped Fishway with Rounded Edges, Application Number: 456485-001, CBR Number: 208763, Filed: 24th April 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The innovative fishway design features angled vane-stepped baffles with rounded edges in a zig-zag “V” pattern to redirect flow, reduce turbulence, and create low-velocity rest zones for fish. Mimicking natural streambeds, it supports diverse species’ migration while enhancing hydraulic efficiency, structural simplicity, and ecological connectivity in dammed rivers.

9. Manish Pandey, Mrinal Kaushik, Chukka Vinay Kumar and Debanik Ghosh, Chevron Cone Baffle Fishway with Rounded Edges, Application Number: 456376-001, CBR Number: 208689, Filed: 23rd April 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The Chevron Cone Baffle fishway design features rounded edges to effectively guide fish movement and water flow. This structure minimizes hydraulic stress, creating gentle vortices and resting zones for fish. Its modularity allows easy retrofitting in dams, enhancing fish migration and supporting biodiversity in affected river systems.

10. Manish Pandey, Chukka Vinay Kumar and Mrinal Kaushik, Geobag with Crossed Cables for Riverbank Protection, Application Number: 456404-001, CBR Number: 208714, Filed: 23rd April 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The Geobag-based riverbank protection system uses integrated cables to enhance stability during floods. By anchoring sediment-filled Geobags, it prevents erosion, reduces scour around bridge piers, and maintains riverbed profiles. Rounded edges minimize turbulence, ensuring sediment stability and long-term effectiveness in erosion-sensitive environments.

11. Manish Pandey, Praveen Kumar Sappati, Mrinal Kaushik and Brajesh Kumar Panda, Compressible-Jet-Integrated Hydraulic Jump Control, Application Number: 454725-001, CBR Number: 207557, Filed: 8th April 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: Compressible jets mitigate hydraulic jump effects by reducing turbulence, energy loss, and erosion. Sonic and supersonic jets improve energy dissipation, control erosion, and enhance flow stability in stilling basins, reducing cavitation risks. These techniques are widely used in dam spillways, tailrace channels, and stilling basins for better flow control and protection. 

12. Praveen Kumar Sappati, Manish Pandey, Mrinal Kaushik and Brajesh Kumar Panda, Supersonic Jet Assisted Agricultural Produce Cleaner, Application Number: 453219-001, CBR Number: 206628, Filed: 27th March 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The supersonic air jet system for cleaning tuber crops reduces water use, operational costs, and crop damage from traditional washing. By utilizing vorticity, it removes debris and lowers microbial contamination without water, minimizing bruising. This cost-effective, environmentally friendly method improves sustainability, crop quality, and safety, benefiting small- and medium-scale farmers. 

13. Manish Pandey, Chukka Vinay Kumar and Mrinal Kaushik, Supersonic Sediment Flusher, Application Number: 453100-001, CBR Number: 206524, Filed: 26th March 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: Sediment accumulation near dam gates reduces storage capacity, affects stability, and disrupts operations. The Supersonic Sediment Flusher uses high-velocity air jets to efficiently remove trapped sediment, restoring the dam's design conditions. This innovative system offers a more effective, non-invasive alternative to conventional methods, preventing pressure buildup and preserving structural integrity. 

14. Brajesh Kumar Panda and Mrinal Kaushik, Instant Beverage Bottle, Application Number: 451913-001, CBR Number: 205736, Filed: 18th March 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: Ready-to-serve (RTS) drinks are popular but face challenges like high processing costs, reliance on preservatives, and logistics expenses. An innovative instant beverage bottle design allows users to prepare drinks without replacing the bottle after each use, reducing costs and minimizing preservative reliance, while ensuring convenience and safety in production. 

15. Mrinal Kaushik and Tamal Jana, Working Hypersonic Intake Model with Porous Ramp Surface for Efficient Air Compression, Application Number: 202531006707, CBR Number: 1076, Filed: 27th January 2025, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: The hypersonic intake model with a porous ramp surface uses a porous cavity at the ramp shoulder to reduce shock strength. High-pressure flow passes through the cavity, causing recirculation and flow expansion, splitting the shock into a lambda shock. This reduces pressure losses, minimizes flow distortion, and enhances scramjet combustion efficiency. 

16. Mrinal Kaushik and Tamal Jana, High Temperature Supersonic Jet Test Facility, Design Application Number: 441077-001, CBR Number: 223470, Filed: 18th December 2024, Applicant Name: Indian Institute of Technology Kharagpur (Indian Patent).

Abstract: In aerospace, turbojet or rocket engine jets are hot, but current jet-test facilities use cold flow, limiting the correlation with actual applications. To address this, we propose a conceptual design for a supersonic heated jet test facility, ensuring experimental data better matches the temperature conditions of real aerospace applications. 

17. T. Paramesh, Tamal Jana and Mrinal Kaushik, High Altitude Supersonic Jet Mixing Apparatus, Application Number: 202341078382, Publication Number: 52/2023 Filed: 17th November 2023, Published: 29th December 2023, Applicant Name: Jain University Bengaluru (Indian Patent).

Abstract: A high altitude supersonic jet mixing apparatus features two plates installed over the divergent part of a nozzle. Each plate contains a V-notch that enhances jet mixing by inducing vortices in shock and expansion waves, reducing supersonic core length, and consequently lowering sound and infrared emissions from the aircraft.