Patents by Inventor Rudra Saurabh Shresth
Rudra Saurabh Shresth 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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Publication number: 20180290078Abstract: Device and process for continuous recycling of wash water, so that water consumption is reduced in conventional personal wash, especially in a shower. The device comprises a surfactant detector (2), a flocculation tank (4), a water tank (5) for cleaned water and a bypass valve (3), wherein the flowpath shifts directly to the water tank (5) by means of the valve (3) bypassing the flocculation tank (4), in the absence of a surfactant in the flowpath.Type: ApplicationFiled: April 15, 2016Publication date: October 11, 2018Applicant: Conopco, Inc., d/b/a UNILEVERInventors: Sameer Keshav BARNE, Ramasubramaniam RAJAGOPAL, Rudra Saurabh SHRESTH, Dhanalakshmi THIRUMENI
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Patent number: 8910889Abstract: The present invention relates to a process and a device for cleaning substrates. In particular the invention relates to an air-water jet device connected to a detergent dosing system. It is therefore an object of the present invention to provide air-water jet device for cleaning fabric articles with enhanced performance; and to provide a dosing device for a detergent composition that may be connected to an air-water jet device. Surprisingly it has been found that a dispensing chamber for a detergent composition DET between the water source and the outlet of the water nozzle provides improved cleaning of an air-water jet.Type: GrantFiled: August 9, 2010Date of Patent: December 16, 2014Assignee: Conopco, Inc.Inventors: Kirtan Shravan Kamkar, Rudra Saurabh Shresth, Arpita Bhattacharya
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Patent number: 8800089Abstract: The present invention is in the field of tooth cleaning devices, especially electrical toothbrushes. The invention further relates to the use of an air/water jet for the cleaning of teeth. A process for cleaning teeth that incorporates a water jet for cleaning teeth remains to be desired, especially a single device that can be employed to clean teeth and reliably deposit material onto teeth. It is therefore an object of the present invention to provide a process for cleaning teeth with an electrical toothbrush device providing improved cleaning by means of an externally mixed air-water jet wherein the water dosing is not influenced by the air pressure. Surprisingly it has been found that a tooth brush device, comprising an air/water jet, wherein the air and water are mixed outside the nozzle(s), provides improved cleaning of dental surfaces, including inter-proximal areas, with low usage of water.Type: GrantFiled: August 9, 2010Date of Patent: August 12, 2014Assignee: Conopco, Inc.Inventors: Kirtan Shravan Kamkar, Amit Sah, Rudra Saurabh Shresth, Narayanan Subrahmaniam, Suresh Sambamurthy Jayaraman
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Patent number: 8685174Abstract: The present invention is in the field of household cleaning tools. The invention further relates to the use of an air-water jet for the cleaning of hardsurfaces. It is an object of the present invention to provide easier cleaning of hard surfaces. It is therefore an object of the present invention to provide a process of easier cleaning of hard surfaces, especially by means of a device that uses a relatively low water flow rate. Surprisingly it has been found that an external mix air-water jet device may be used for cleaning hard surfaces.Type: GrantFiled: August 9, 2010Date of Patent: April 1, 2014Assignee: Conopco, Inc.Inventors: Richa Sureshchand Goyal, Kirtan Shravan Kamkar, Amit Sah, Rudra Saurabh Shresth, Narayanan Subrahmaniam, Stephen John Singleton
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Publication number: 20130327361Abstract: The present invention is in the field of laundry processes and devices. In particular the invention relates to the saving of water. It is an object of the present invention to reduce the water consumption in conventional washing methods, especially machine washing methods. It is found that the continuous pH controlled sequential dosing of an electrolyte, followed by dosing of a polymer and a solid liquid separation step during a full wash cycle of a washing machine, provides continuous clarification of the wash liquor and enables the continuous reuse of the water during said wash cycle.Type: ApplicationFiled: December 14, 2011Publication date: December 12, 2013Inventors: Sarmistha Biswas, Debosree Chatterjee, Rajiv Kumar Garg, Rudra Saurabh Shresth, Dhanalakshmi Thirumeni
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Publication number: 20130289501Abstract: The present invention is in the field skin treatment, in particular and deep pore cleansing and delivery of benefit agents deep inside the pores. The invention further relates to air-water jet devices for providing said skin treatment. Accordingly it is an object of the invention to provide for a device and process for deep pore skin cleansing, especially, a process for skin cleansing using reduced amounts of water. We have found that a skin cleaning device comprising an air-water jet, wherein the air and water are mixed outside the nozzle(s), provides improved cleansing of skin, including deep poor cleansing, with low usage of water.Type: ApplicationFiled: December 14, 2011Publication date: October 31, 2013Inventors: Arpita Bhattacharya, Sudipta Ghosh Dastidar, Alagirisamy Nethaji, Rudra Saurabh Shresth, Narayanan Subrahmaniam
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Publication number: 20130269733Abstract: The present invention is in the field devices for hand washing, in particular the washing and drying of hands in public bathrooms. Accordingly it is an object of the present invention to provide a device for cleaning hands, especially a device for wetting hands, depositing a cleansing and/or disinfecting composition and rinsing consecutively, using a low amount of water. It has been found that an air-water jet nozzle assembly comprising two nozzles wherein a first nozzle is in fluid communication with a feed liquid source; and a second nozzle connected to a source of compressed air may be used to clean hands using low amounts of water in a short time.Type: ApplicationFiled: December 14, 2011Publication date: October 17, 2013Inventors: Amit Chakrabortty, Amit Sah, Rudra Saurabh Shresth
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Publication number: 20120225404Abstract: The present invention is in the field of tooth cleaning devices, especially electrical toothbrushes. The invention further relates to the use of an air/water jet for the cleaning of teeth. A process for cleaning teeth that incorporates a water jet for cleaning teeth remains to be desired, especially a single device that can be employed to clean teeth and reliably deposit material onto teeth. It is therefore an object of the present invention to provide a process for cleaning teeth with an electrical toothbrush device providing improved cleaning by means of an externally mixed air-water jet wherein the water dosing is not influenced by the air pressure. Surprisingly it has been found that a tooth brush device, comprising an air/water jet, wherein the air and water are mixed outside the nozzle(s), provides improved cleaning of dental surfaces, including inter-proximal areas, with low usage of water.Type: ApplicationFiled: August 9, 2010Publication date: September 6, 2012Inventors: Kirtan Shravan Kamkar, Amit Sah, Rudra Saurabh Shresth, Narayanan Subrahmaniam, Suresh Sambamurthy Jayaraman
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Publication number: 20120138103Abstract: The present invention is in the field of household cleaning tools. The invention further relates to the use of an air-water jet for the cleaning of hardsurfaces. It is an object of the present invention to provide easier cleaning of hard surfaces. It is therefore an object of the present invention to provide a process of easier cleaning of hard surfaces, especially by means of a device that uses a relatively low water flow rate. Surprisingly it has been found that an external mix air-water jet device may be used for cleaning hard surfaces.Type: ApplicationFiled: August 9, 2010Publication date: June 7, 2012Inventors: Richa Sureshchand Goyal, Kirtan Shravan Kamkar, Amit Sah, Rudra Saurabh Shresth, Narayanan Subrahmaniam, Stephen John Singleton
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Publication number: 20120138708Abstract: The present invention relates to a process and a device for cleaning substrates. In particular the invention relates to an air-water jet device connected to a detergent dosing system. It is therefore an object of the present invention to provide air-water jet device for cleaning fabric articles with enhanced performance; and to provide a dosing device for a detergent composition that may be connected to an air-water jet device. Surprisingly it has been found that a dispensing chamber for a detergent composition DET between the water source and the outlet of the water nozzle provides improved cleaning of an air-water jet.Type: ApplicationFiled: August 9, 2010Publication date: June 7, 2012Inventors: Kirtan Shravan Kamkar, Rudra Saurabh Shresth, Arpita Bhattacharya
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Patent number: 8016949Abstract: In particular a porous substrate (FS) like a fabric. Process to clean a substrate, comprising a step of subjecting the substrate to an air-water spray (SPR), generated using a spraying means (N) comprising an air passage (OPA) and a water passage (OPW), wherein air is greater than 90% by volume of the spray, the air velocity is greater than 80 m/s and wherein said air passage does not coaxially surround said water passage. Device to clean soiled fabric (FS) comprising a feed water container (CW) and an air compressor (AC) in fluid communication with a spray nozzle (N) comprising an air passage and a water passage, said device being capable of generating an air pressure in the range of 1 to 3 bar (absolute) and an air velocity greater than 80 m/s at the exit of said nozzle; and the air is greater than 90% volume of said spray, and wherein said air passage does not coaxially surround said water passage. An external mix spray nozzle is especially preferred in the device.Type: GrantFiled: January 27, 2009Date of Patent: September 13, 2011Assignee: Conopco Inc.Inventors: Suresh Sambamurthy Jayaraman, Kirtan Shravan Kamkar, Lalit Kumar, Amit Sah, Rudra Saurabh Shresth
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Publication number: 20100307541Abstract: In particular a porous substrate (FS) like a fabric. Process to clean a substrate, comprising a step of subjecting the substrate to an air-water spray (SPR), generated using a spraying means (N) comprising an air passage (OPA) and a water passage (OPW), wherein air is greater than 90% by volume of the spray, the air velocity is greater than 80 m/s and wherein said air passage does not coaxially surround said water passage. Device to clean soiled fabric (FS) comprising a feed water container (CW) and an air compressor (AC) in fluid communication with a spray nozzle (N) comprising an air passage and a water passage, said device being capable of generating an air pressure in the range of 1 to 3 bar (absolute) and an air velocity greater than 80 m/s at the exit of said nozzle; and the air is greater than 90% volume of said spray, and wherein said air passage does not coaxially surround said water passage. An external mix spray nozzle is especially preferred in the device.Type: ApplicationFiled: January 27, 2009Publication date: December 9, 2010Inventors: Suresh Sambamurthy Jayaraman, Kirtan Shravan Kamkar, Lalit Kumar, Amit Sah, Rudra Saurabh Shresth