Patents by Inventor Hari Chand Bajaj
Hari Chand Bajaj has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9433919Abstract: The present invention discloses activated carbon-metal organic framework composite materials (AC@MOF) with enhanced gas adsorption capacity. The present invention also discloses a process for the preparation of carbon-metal organic framework composite materials (AC@MOF). The present invention involves the use of “void space filling method” in metal organic frameworks (MOFs), which have been accomplished by in-situ addition of selected type and appropriate amount of activated carbon during the synthesis of MOF such as Cu-BTC, in the storage of gases such as methane. The gas adsorption capacity of these AC@MOF composite materials is significantly increased through this method.Type: GrantFiled: March 30, 2012Date of Patent: September 6, 2016Assignees: Council of Scientific & Industrial Research, Bharat Petroleum Corporation LimitedInventors: Hari Chand Bajaj, Rajesh Shantilal Somani, Phani Brahma Rallapalli, Dinesh Patil, Karikkethu Prabhakaran Prasanth, Checkalazhikathu Raj Manoj, Rajendra Singh Thakur, Mathew John, Bharat Lakshman Newalkar, Nettem Venkateswarlu Choudary
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Publication number: 20150368181Abstract: The present invention relates to preparation of highly efficient chiral recyclable homogeneous catalysts generated in situ by the reaction of chiral oligomeric [H4] ligands and a metal salt taken in 1:1 molar ratio for asymmetric nitroaldol reaction, wherein nitroaldol reactions of various aldehydes such as aromatic, aliphatic ?,?-unsaturated aldehydes, alicyclic aldehydes and nitroalkenes were carried out to produce optically active ?-nitroalcohols in high yield and with moderate to excellent enantioselectivity (ee up to >95%) in presence of a base and an optically active chiral recyclable homogeneous catalyst represented by the following formula (I).Type: ApplicationFiled: October 31, 2013Publication date: December 24, 2015Applicant: Council of Scientific & Industrial ResearchInventors: Rukhsana Ilyas KURESHY, Noor-Ul-Hasan KHAN, Sayed Hasan Razi ABDI, Hari Chand BAJAJ, Tamal ROY, Anjan DAS
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Patent number: 9193601Abstract: A method of producing soda ash and ammonium sulphate by recycling by-products of Merseberg and Solvay processes includes treating brine with soda ash distiller waste for desulphatation of the brine to obtain gypsum, recovering pure salt from the desulphated brine and utilizing it in manufacture of soda ash in a Solvay process, washing the gypsum and reacting it with liquor ammonia and carbon dioxide to obtain CaCO3 and ammonium sulphate, separating the CaCO3 from the ammonium sulphate solution and recovering solid ammonium sulphate, washing the CaCO3 followed by calcination to generate CO2 and lime, recycling the CO2 in the Solvay process to obtain soda ash, recycling the lime with ammonium chloride generated in the Solvay process to recover ammonia and obtain distiller waste containing CaCl2 as a by-product, recycling the by-product distiller waste for the desulphatation of the brine, and recycling the ammonia recovered.Type: GrantFiled: September 30, 2013Date of Patent: November 24, 2015Assignee: Council of Scientific & Industrial ResearchInventors: Pushpito Kumar Ghosh, Haresh Mahipatlal Mody, Rajesh Shantilal Somani, Pratyush Maiti, Maheshkumar Ramniklal Gandhi, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Sumesh Chandra Upadhyay
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Patent number: 9040755Abstract: A process for preparation of 2-phenyl ethanol by catalytic hydrogenation of styrene oxide using a catalyst consisting of Pd (II) on basic inorganic support is investigated. The present invention comprises development of new Pd based catalysts. The present method yields 2-phenyl ethanol in 98% selectivity at total conversion of styrene oxide. The present process represents an environment friendly alternative to conventionally used methods in industry and eliminates the reduction step for catalyst preparation. In the present invention the active catalyst is generated in situ during the hydrogenation of styrene oxide. In addition, Pd (II) supported catalysts do not catch fire (non pyrophoric), can be stored under ambient conditions and produce very less or no dust which makes said catalysts suitable for industrial application.Type: GrantFiled: December 14, 2012Date of Patent: May 26, 2015Assignee: Council of Scientific and Industrial ResearchInventors: Hari Chand Bajaj, Sayed Hasan Razi Abdi, Rukhsana Ilyas Kureshy, Noor-Ul Hasan Khan, Aasif Asharafbhai Dabbawala, Tamal Roy
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Publication number: 20150093309Abstract: A method of producing soda ash and ammonium sulphate by recycling by-products of Merseberg and Solvay processes includes treating brine with soda ash distiller waste for desulphatation of the brine to obtain gypsum, recovering pure salt from the desulphated brine and utilizing it in manufacture of soda ash in a Solvay process, washing the gypsum and reacting it with liquor ammonia and carbon dioxide to obtain CaCO3 and ammonium sulphate, separating the CaCO3 from the ammonium sulphate solution and recovering solid ammonium sulphate, washing the CaCO3 followed by calcination to generate CO2 and lime, recycling the CO2 in the Solvay process to obtain soda ash, recycling the lime with ammonium chloride generated in the Solvay process to recover ammonia and obtain distiller waste containing CaCl2 as a by-product, recycling the by-product distiller waste for the desulphatation of the brine, and recycling the ammonia recovered.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Inventors: Pushpito Kumar Ghosh, Haresh Mahipatlal Mody, Rajesh Shantilal Somani, Pratyush Maiti, Maheshkumar Ramniklal Gandhi, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Sumesh Chandra Upadhyay
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Publication number: 20150005530Abstract: The present invention provides a L-enantiomers selective composite membrane useful for separation of optical isomers and the process for the preparation thereof. The invention further provides a membrane based pressure driven separation process for separation of enantiomers from their mixture to obtain optical pure isomers. The present invention also provides a membrane based method for optical resolution of racemic mixtures of amino acids to obtain optically pure amino acids.Type: ApplicationFiled: February 6, 2013Publication date: January 1, 2015Inventors: Kripal Singh, Hari Chand Bajaj, Pravin Ganeshrao Ingole
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Publication number: 20140330047Abstract: A process for preparation of 2-phenyl ethanol by catalytic hydrogenation of styrene oxide using a catalyst consisting of Pd (II) on basic inorganic support is investigated. The present invention comprises development of new Pd based catalysts. The present method yields 2-phenyl ethanol in 98% selectivity at total conversion of styrene oxide. The present process represents an environment friendly alternative to conventionally used methods in industry and eliminates the reduction step for catalyst preparation. In the present invention the active catalyst is generated in situ during the hydrogenation of styrene oxide. In addition, Pd (II) supported catalysts do not catch fire (non pyrophoric), can be stored under ambient conditions and produce very less or no dust which makes said catalysts suitable for industrial application.Type: ApplicationFiled: December 14, 2012Publication date: November 6, 2014Inventors: Hari Chand Bajaj, Sayed Hasan Razi Abdi, Rukhsana Ilyas Kureshy, Noor-UI Hasan Khan, Aasif Asharafbhai Dabbawala, Tamal Roy
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Patent number: 8721999Abstract: Kainite mixed salt is treated with water to obtain solid schoenite and a schoenite end liquor. The latter is desulphated using recycled CaCl2 and thereafter evaporated to obtain camallite crystals, from which KCl is recovered, and a liquor rich in MgCl2. Gypsum produced during desulphatation is reacted with aqueous ammonia and CO2 to produce ammonium sulphate and calcium carbonate. The calcium carbonate is calcined to obtained CaO and CO2. The CaO is slaked and reacted with the MgCl2-rich liquor generated above to produce slurry of Mg(OH)2 in aqueous CaCl2. To this surface modifying agent is added while hot and, after cooling, the slurry yields surface modified Mg(OH)2. The filtrate rich in CaCl2 is recycled for desulphatation process above. The solid surface modified Mg(OH)2 may he calcined to produced MgO. The schoenite and KCl are reacted to produce solid sulphate of potash.Type: GrantFiled: March 29, 2010Date of Patent: May 13, 2014Assignee: Council of Scientific and Industrial ResearchInventors: Pushpito Kumar Ghosh, Haresh Mahipatlal Mody, Jatin Rameshchandra Chunawala, Maheshkumar Ramniklal Gandhi, Hari Chand Bajaj, Pratyush Maiti, Himanshu Labhshanker Joshi, Hasina Hajibhai Deraiya, Upendra Padmakant Saraiya
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Publication number: 20140018238Abstract: The present invention discloses activated carbon-metal organic framework composite materials (AC@MOF) with enhanced gas adsorption capacity. The present invention also discloses a process for the preparation of carbon-metal organic framework composite materials (AC@MOF). The present invention involves the use of “void space filling method” in metal organic frameworks (MOFs), which have been accomplished by in-situ addition of selected type and appropriate amount of activated carbon during the synthesis of MOF such as Cu-BTC, in the storage of gases such as methane. The gas adsorption capacity of these AC@MOF composite materials is significantly increased through this method.Type: ApplicationFiled: March 30, 2012Publication date: January 16, 2014Applicants: BHARAT PETROLEUM CORPORATION LIMITED, COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Hari Chand Bajaj, Rajesh Shantilal Somani, Phani Brahma Rallapalli, Dinesh Patil, Karikkethu Prabhakaran Prasanth, Checkalazhikathu Raj Manoj, Rajendra Singh Thakur, Mathew John, Bharat Lakshman Newalkar, Nettem Venkateswarlu Choudary
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Publication number: 20130315805Abstract: The present invention provides an integrated process for the recovery of sulphate of potash (SOP), ammonium sulphate and surface modified magnesium hydroxide and/or magnesium oxide utilizing kainite mixed salt and ammonia as the only consumable raw materials. The process involves treating kainite mixed salt with water to obtain solid schoenite and a schoenite end liquor. The latter is desulphated using CaCl2 generated in the process itself and thereafter evaporated to obtain carnallite crystals from which KCl is recovered while the liquor rich in MgCl2 serves as a source of MgCL. The gypsum produced during desulphatation is reacted with aqueous ammonia and CO2 to produce ammonium sulphate and calcium carbonate. The calcium carbonate so obtained is then calcined to obtained CaO and CO2. The CaO is then slaked in decarbonated water and reacted with the MgCl2-rich liquor generated above to produce slurry of Mg(OH)2 in aqueous CaCl2.Type: ApplicationFiled: March 29, 2010Publication date: November 28, 2013Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Pushpito Kumar Ghosh, Haresh Mahipatlal Mody, Jatin Rameshchandra Chunawala, Maheshkumar Ramniklal Gandhi, Hari Chand Bajaj, Pratyush Maiti, Himanshu Labhshanker Joshi, Hasina Hajibhai Deraiya, Upendra Padmakant Saraiya
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Patent number: 8252261Abstract: The present invention provides a process for the preparation of finely divided precipitated silica. Finely divided precipitated silica is prepared by neutralization of alkali silicate solution, under continuous stirring, at 60° to 90° C. in presence of alkali metal salt as coagulating agent, in various neutralization steps during which neutralization is interrupted for specific time. Further acidic silica sol, is added until 60 to 80% of total alkali is neutralized. The reaction mixture is then aged at least for 3 minute under continuous agitation, followed by circulation through centrifugal pump at an appropriate rate.Type: GrantFiled: April 30, 2008Date of Patent: August 28, 2012Assignee: Council of Scientific & Industrial ResearchInventors: Raksh Vir Jasra, Haresh Mahipatlal Mody, Rajesh Shantilal Somani, Hari Chand Bajaj, Dipak Balwantrai Shukla, Niraj Rameshchandra Vyas
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Patent number: 7560093Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.Type: GrantFiled: January 18, 2008Date of Patent: July 14, 2009Assignees: Council of Scientific and Industrial Research, National Mineral Development Corporation LimitedInventors: Raksh Vir Jasra, Rajesh Shantilal Somani, Haresh Mahipatlal Mody, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Hemal Ranpara, Dipti Barochiya, Devendra Ghelani, Suresh Chandra, Maharaj Kishen Dhar, Keshav Rao, Kamlesh Kumar
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Publication number: 20090010832Abstract: The present invention provides a process for the preparation of finely divided precipitated silica. Finely divided precipitated silica is prepared by neutralization of alkali silicate solution, under continuous stirring, at 60° to 90° C. in presence of alkali metal salt as coagulating agent, in various neutralization steps during which neutralization is interrupted for specific time. Further acidic silica sol, is added until 60 to 80% of total alkali is neutralized. The reaction mixture is then aged at least for 3 minute under continuous agitation, followed by circulation through centrifugal pump at an appropriate rate.Type: ApplicationFiled: April 30, 2008Publication date: January 8, 2009Inventors: Raksh Vir JASRA, Haresh Mahipatlal Mody, Rajesh Shantilal Somani, Hari Chand Bajaj, Dipak Balwantrai Shukla, Niraj Rameshchandra Vyas
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Patent number: 7473406Abstract: The present invention relates to an improved process for the recovery of palladium from spent catalyst. The present invention particularly relates to a suitable method of catalyst recovery of precious metals from spent catalysts or inorganic waste and more specifically the process concerns with the recovery of palladium that is anchored on carbon and is used as catalyst for the hydrogenation of nitro aromatics or as a catalyst for many other organic transformations.Type: GrantFiled: May 30, 2003Date of Patent: January 6, 2009Assignee: Council of Scientific and Industrial ResearchInventors: Raksh Vir Jasra, Pushpito Kumar Ghosh, Hari Chand Bajaj, Arvindkumar Balvantrai Boricha
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Publication number: 20080311033Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.Type: ApplicationFiled: January 18, 2008Publication date: December 18, 2008Applicants: Council of Scientific and Industrial Research (CISR), National Mineral Development Corporation LimitedInventors: Raksh Vir Jasra, Rajesh Shantilal Somani, Haresh Mahipatial Mody, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Hemal Ranpara, Dipti Barochiya, Devendra Ghelani, Suresh Chandra, Maharaj Kishen Dhar, Keshav Rao, Kamlesh Kumar
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Patent number: 7335342Abstract: In the present invention a process for the preparation of sodium silicate from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting Kimberlite tailing with mineral acid to remove acid soluble impurities followed by digesting acid treated Kimberlite tailing with alkali solution in a open or closed system to obtain sodium silicate useful for commercial applications.Type: GrantFiled: March 14, 2006Date of Patent: February 26, 2008Assignee: Council of Scientific and Industrial ResearchInventors: Raksh Vir Jasra, Hari Chand Bajaj, Rajesh Shantilal Somani, Haresh Mahipatlal Mody, Jatin Rameshchandra Chunawala, Devendra Lalijibhai Ghelani, Hemal Narendrakumar Ranpara, Dipti Jivanbhai Barochiya, Suresh Chandra, Maharaj Kishan Dhar, C. Kesava Rao, Kamlesh Kumar
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Patent number: 7108839Abstract: The present invention provides a provides a process for the recovery of precious metals from spent catalysts or adsorbent or inorganic waste, more specifically the process relates to recovery of Pd from silica, which is used as an adsorbent in column chromatography or as a catalyst support in many catalysts.Type: GrantFiled: December 3, 2002Date of Patent: September 19, 2006Assignee: Council of Scientific and Industrial ResearchInventors: Arvindkumar Balvantrai Boricha, Hari Chand Bajaj, Raksh Vir Jasra, Pradyut Ghosh, Pushipito Kumar Ghosh
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Patent number: 7037476Abstract: A new process is described for the preparation of free flowing hydrated amorphous silica from kimberlite tailing—a waste in diamond mining. The process comprises treating of kimberlite with acid, further reacting it with alkali solution to obtain soluble metal silicate solution, which is subsequently neutralized with mineral acid to polymerize silica as insoluble precipitates. The products is useful in rubber, paints as abrasive etc.Type: GrantFiled: December 27, 2004Date of Patent: May 2, 2006Assignees: Council of Scientific and Industrial Research, National Mineral Development Corporation LimitedInventors: Raksh Vir Jasra, Haresh Mahipatlal Mody, Hari Chand Bajaj, Rajesh Shantilal Somani, Jatin Rameshchandra Chunawala, Hemal Ranpara, Dipti Barochiya, Devendra Ghelani, Suresh Chandra, Maharaj Kishen Dhar, Keshav Rao, Kamlesh Kumar
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Publication number: 20040241066Abstract: The present invention relates to an improved process for the recovery of palladium from spent catalyst. The present invention particularly relates to a suitable method of catalyst recovery of precious metals from spent catalysts or inorganic waste and more specifically the process concerns with the recovery of palladium that is anchored on carbon and is used as catalyst for the hydrogenation of nitro aromatics or as a catalyst for many other organic transformations.Type: ApplicationFiled: May 30, 2003Publication date: December 2, 2004Inventors: Raksh Vir Jasra, Pushpito Kumar Ghosh, Hari Chand Bajaj, Arvindkumar Balvantrai Boricha
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Publication number: 20040105799Abstract: The present invention provides a provides a process for the recovery of precious metals from spent catalysts or adsorbent or inorganic waste, more specifically the process relates to recovery of Pd from silica, which is used as an adsorbent in column chromatography or as a catalyst support in many catalysts.Type: ApplicationFiled: December 3, 2002Publication date: June 3, 2004Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Arvindkumar Balvantrai Boricha, Hari Chand Bajaj, Raksh Vir Jasra, Pradyut Ghosh, Pushipito Kumar Ghosh