Jawaharlal Nehru Aluminium Research Development & Design Centre

Autonomus Body Under Ministry of Mines, Government of India

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Patents

Patents : Filed = 30 out of which Granted = 21

Copyrights : Granted = 2

JNARDDC

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List of NALCO PDF - (495.21 KB)

Patents Granted

1. Title of Patent :

21. Process for preparation of light weight Foamed bricks (LWFBs) utilizing red mud and fly ash admixture

Application Number: Granted vide no. 292333 [2017-18]
Date of grant: 30/01/2018
Inventors: Mohamed Najar, MT Nimje, J Mukhopadhyay, (JNARDDC) and BK. Satpathy (NALCO)

2. Title of Patent :

20. Controlled heat treatment process for destruction of leachable toxic cyanide in first cut aluminium spent pot lining materials

Application Number: Granted vide no. 301579 [2018-19]
Date of grant: 27/09/2018
Inventors: MT Nimje, Mohamed Najar (JNARDDC) & Binuta Patra (NALCO)

3. Title of Patent :

19. A process for preparing of glass ceramic tiles

Application Number: Granted vide no. 326108 [2019-20]
Date of grant: 28/11/2019
Inventors: M T Nimje, Mohamed Najar, J Mukhopadhyay, (JNARDDC) and B K Satpathy (NALCO)

4. Title of Patent :

18. Liquidus /Superheat Temperature Measurement System for Molten Cryolite Bath

Application Number: Granted vide no. 334205 [2019-20]
Date of grant: 09/03/2020
Inventors: R J Sharma, V K Jha (JNARDDC) Binuta Patra, (NALCO) P Bandopadhyay (NALCO)

5. Title of Patent :

17. Development of process for selective in-situ dissolution of alumina & silica bearing mineral phases in bauxite at room temperature for geo–analytical application

Application Number: Granted vide no. 340231 [2020-21]
Date of grant: 02/07/2020
Inventors: P A Mohamed Najar, P G Bhukte, U Singh, M T Nimje, SP Puttewar, A Agnihotri (JNARDDC)

6. Title of Patent :

16. Determination of calcium in alumina hydrate, calcined alumina and process liquor

Application Number: Granted vide no. 378743 [2021-22]
Date of grant: 06/10/2021
Inventors: Dr Mohamed Najar, Mr M T Nimje, Dr S P Puttewar, Dr Anupam Agnihotri (JNARDDC) & Mr Subrat Kar, Mr V Krishna Kumari and Mr P K Behera (NALCO)

7. Title of Patent :

15. A process for rapid analysis of reactive silica in bauxite and laterite based on selective autogenous dissolution at ambient temperature

Application Number: Granted vide no. 391928 [2021-22]
Date of grant: 14/03/2022
Inventors: Dr Mohamed Najar, Shama Wadsariya, Amrita Karn, Prajakta Ogale, S P Puttewar and Anupam Agnihotri (JNARDDC)

8. Title of Patent :

14. A process for preparing smelter grade alumina

Application Number: Granted vide no. 404896 [2022-23]
Date of grant: 29/08/2022
Inventors: Suchita B Rai, M J Chaddha, M T Nimje, R J Sharma, K J Kulkarni & K R Rao (JNARDDC)

9. Title of Patent :

13. Process for preparation of low ferric alum from waste or low grade aluminium dross

Application Number: Granted vide no. 406384 [2022-23]
Date of grant: 12/09/2022
Inventors: Upendra Singh, J Mukhopadhyay (JNARDDC) & Binuta Patra and P Bandopadhyay (NALCO)

10. Title of Patent :

12. A process for conversion of Hazardous 1st Cut SPL Waste of Aluminium Industries into Non Hazardous Material by Converting Inorganic Toxic Cyanide to Non Toxic Species by Selective Heat Treatment and Recovery of Sodium, Fluoride and Carbon Value

Application Number: Granted vide no. 407276 [2022-23]
Date of grant: 21/09/2022
Inventors: M T Nimje Mohamed Najar Anupam Agnihotri (JNARDDC) & A S P Mishra (VEDANTA)

11. Title of Patent :

11. A process for selective leaching of iron from alumina hydrate

Application Number: Granted vide no. 407793 [2022-23]
Date of grant: 28/09/2022
Inventors: Mohamed Najar, M T Nimje, S P Puttewar, Anupam Agnihotri (JNARDDC) & Subrat Kar, V Krishna Kumari P K Behera, (NALCO)

12. Title of Patent :

10. A Light Weight Foamed Geopolymer (LWFGEOP) and its preparation

Application Number: Granted vide no. 409005 [2022-23]
Date of grant: 12/10/2022
Inventors: Mohamed Najar, Mukesh Chaddha, Pravin Bhukte, Numanuddin Azad, Shama Wadsariya, Suresh Puttewar, Anupam Agnihotri (Jnarddc) And Saket Jain ( Swarnalatha Holdings)

13. Title of Patent :

9. A Process for selective reduction of Al2O3, SiO2, Na2O and CaO in reed mud for enrichment of Fe2O3

Application Number: Granted vide no. 421167 [2022-23]
Date of grant: 10/02/2023
Inventors: Mohamed Najar, Shoeb Ansari, Shama Wadsariya, Kiran Janbandhu, Rajashekhar Rao, S P Puttewar and Anupam Agnihotri

14. Title of Patent :

8. A Process For Selective Enrichment And Separation Of Alumina And Silica

Application Number: Granted vide no. 427093 [2022-23]
Date of grant: 27/03/2023
Inventors: Mohamed Najar, Amrita Karan, Paresh Nageshwar, Mukesh Chaddha, Anupam Agnihotri

15. Title of Patent :

7. Partially Lateritised Khondalite based ceramic proppant and its preparation

Application Number: Granted vide no. 427235 [2022-23]
Date of grant: 28/03/2023
Inventors: Pravin Bhukte, Suresh Puttewar, Mukesh Chaddha, Anupam Agnihotri, Gopal Daware (JNARDDC), Bhimsen Pradhan, Bandopadhyay P (NALCO)

16. Title of Patent :

6. A process for delamination of a multi-layered packaging material and selective recovery of aluminium metal values

Application Number: Granted vide no. 427584 [2022-23]
Date of grant: 29/03/2023
Inventors: Mohamed Najar, Amrita Karan, Paresh Nageshwar, Ram Chouhan, Anupam Agnihotri

17. Title of Patent :

5. A process for preparation of aluminium hydroxide with low soda content

Application Number: Granted vide no. 455707 [2023-24]
Date of grant: 29/09/2023
Inventors: Dr Suchita Rai, M. T. Nimje, A Agnihotri

18. Title of Patent :

4. Process for revitalization of high alumina castables from aluminium dross

Application Number: Granted vide no. 471016 [2023-24]
Date of grant: 21/11/2023
Inventors: Dr Upendra Singh, M T Nimje, Shoeb Ansari, Anupam Agnihotri, (JNARDDC) & A S P Mishra (VEDANTA)

19. Title of Patent :

3. A process for removal of iron oxide, Silica and enrichment of alumina in ferruginous, siliceous and aluminous Laterite by physical separation process

Application Number : Granted vide no. 483133 [2023-24]
Date of grant : 15/12/2023
Inventors : Pravin Bhukte, S P Puttewar, Anupam Agnihotri

20. Title of Patent :

2. A process for conversion of saprolite into refractory aggregate

Application Number : Granted vide no. 507474 [2023-24]
Date of grant : 06/02/2024
Inventors : P G Bhukte, S P Puttewar, M T Nimje, M J Chaddha, M Najar, U Singh and A Agnihotri

21. Title of Patent :

1. An improved heat treatment process for production of heat resistant Al-Zr alloy wire for overhead conductor

Application Number : Granted vide no. 533417 [2024-25]
Date of grant : 17/04/2024
Inventors : R N Chouhan, P Mahendiran, VNSU Viswanath Ammu, Suman Mukherjee Kalyani Humne, Anupam Agnihotri, (JNARDDC) & D Lokeswara Rao (NFTDC)

Copyrights granted

1. Software for real-time determination of liquidus, operating and superheat temperature of molten cryolite bath

Application Number : SW-9651/2017 [2017-18]
Date of grant : 13/11/2017
Inventors : Mr V K Jha & Mr R J Sharma

2. Software for cost optimization of recycling of different types of aluminum scraps for production of alloy of desired composition” has been granted

Application Number : SW-9651/2017 [2017-18]
Date of grant : 13/11/2017
Inventors : Mr V K Jha & Mr R J Sharma

Patents filed and under process for approval

1. Title of Patent :

An alloy composition and a method for its preparation;

Application Number : 202621017676 [2025-26]
Date of Filing : 17/02/2026
Inventors : Arora Amit, Deb Sagar Kumar, Kola Immanuel Raju, Singh Ritu; Joint Patent of IIT Gandhinagar & JNARDDC

2. Title of Patent :

A process for conversion of lithomarge clay as filler material in paint industry

Application Number : 202521090202 [2025-26]
Date of Filing : 20/09/2025
Inventors : Dr P G Bhukte Dr Md Najar P A, Dr A Agnihotri

3. Title of Patent :

A Process for Producing Pilot Scale Extrusion Billets and Extrudates From Machining Swarf

Application Number : 202521042386 [2025-26]
Date of Filing : 01/05/2025
Inventors : Dr Anas N S, K N Ramteke, R Anil Kumar, V N S U V Ammu, R N Chouhan, Dr A Agnihotri

4. Title of Patent :

Synthesis of alumina having high purity

Application Number : 202421098159 [2024-25]
Date of Filing : 12/12/2024
Inventors : Dr Priyanka Nayar Dr Pooja Yadav Mr Sandeep Kowe Dr Upendra Singh Dr A Agnihotri Mr Lavudya Naresh [NALCO]

5. Title of Patent :

A process for the preparation of fine alumina trihydrate (ATH) from low- grade bauxite with generation of high- iron containing bauxite residue

Application Number : 202421091450 [2024-25]
Date of Filing : 23/11/2024
Inventors : Dr. S B Rai Ms Prachi Pradhan Ms Megha Panchal Dr A Agnihotri Dr Suraj Tripathy (KIIT)

6. Title of Patent :

A process for beneficiation and enrichment of rare earth elements in bauxite residue

Application Number : 202221024081 [2022-23]
Date of Filing : 25/04/2022
Inventors : Dr. Upendra Singh, Sonali Thawrani, Jyoti Pendam, Mayur Tirpude, Anupam Agnihotri

7. Title of Patent :

A method to obtain upto 150µ thick nano-structure A-Al2O3 coatings by plasma spraying

Application Number : 202241005098 [2021-22]
Date of grant : 31/01/2022
Inventors : Dr S. Gowtham Sanjai & Parvati Ramaswamy, (Christ University); Dr Priyanka Nayar, Dr Upendra Singh & Dr Anupam Agnihotri (JNARDDC)

8. Title of Patent :

Synthesis of spray dried nano 8YSZ plasma sprayable powder and plasma sprayed thermal barrier coating

Application Number : 202241011004 [2021-22]
Date of grant : 11/03/2022
Inventors : Dr S. Gowtham Sanjai & Parvati Ramaswamy, (Christ University); Dr Priyanka Nayar, Dr Upendra Singh & Dr Anupam Agnihotri (JNARDDC)

9. Title of Patent :

Method and Apparatus for Onsite Measurement of Bath Ratio, Alumina Concentration, Liquidus Temperature and Operating Temperature of Aluminium Electrolysis Bath

Application Number : 201721040908 [2017-18]
Date of grant : 16/11/2017
Inventors : Mr V K Jha, Mr Rajendra J Sharma, Dr Upendra Singh, Dr Anupam Agnihotri, Ms Shweta Dhamande, Mr Manish Kar

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