Patents by Inventor Babu Padmanabhan
Babu Padmanabhan 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: 11850567Abstract: A co-rotating twin screw processor for preparing dry granules including an input zone having one or more powder feeders for feeding an input material into the processor, a steam feeder configured to introduce steam as a granulation activating agent in to the processor, a granulation zone for granulating the input material in the presence of steam to form granules, a controller configured to control operation and feed rate of at least one of the powder feeder or the steam feeder such that 2.5 to 5 percent w/w of the steam with respect to the input material is available for granulation, and a discharge zone haring a non-extruding opening for collecting dry granules.Type: GrantFiled: August 31, 2020Date of Patent: December 26, 2023Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Radhika Ghike, Vijay Kulkarni, Indu Bhushan, Himadri Sen, Babu Padmanabhan, Vinay Rao
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Publication number: 20230390965Abstract: An element for a co-rotating twin screw processor, the element having an axial bore for mounting on a screw shaft of the processor, the element comprising a continuous self-wiping flight helically formed thereon, the element comprising a plurality of segments, wherein the flight has a different lead in at least two segments of the plurality of segments.Type: ApplicationFiled: October 1, 2021Publication date: December 7, 2023Applicant: STEER ENGINEERING PRIVATE LIMITEDInventor: BABU PADMANABHAN
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Patent number: 11759976Abstract: A continuous granulation system for obtaining conditioned granules is disclosed. The system comprises a processor configured to produce a continuous flow of granules at an outlet of the processor. The system also comprises a collection chamber positioned downstream from the processor and configured to collect the granules from the outlet. Further, the system comprises an air displacement device coupled to the collection chamber and configured to create a unidirectional flow of air at the outlet in a direction of the granules exiting the processor and away from the outlet. The unidirectional flow of air conditions the granules obtained in the collection chamber. A continuous granulation method and a continuous granule collection system for obtaining the conditioned granules is also disclosed.Type: GrantFiled: July 14, 2021Date of Patent: September 19, 2023Assignee: Steerlife India Private LimitedInventors: Babu Padmanabhan, Indu Bhushan, Vinay Rao
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Patent number: 11752681Abstract: A method for producing a fused unplasticised polyvinyl chloride (UPVC) article (126) is provided. The method includes feeding an UPVC blend (103) into a co-rotating twin-screw extruder (100). The method further includes melting the UPVC blend (103) and conveying fused UPVC to an outlet (120) of the co-rotating twin-screw extruder (100). The method also includes collecting the fused UPVC from the outlet (120) at a rate of at least 100 kilograms/hour per litre of free volume (124) of the co-rotating twin-screw extruder (100).Type: GrantFiled: June 20, 2018Date of Patent: September 12, 2023Assignee: STEER ENGINEERING PRIVATE LIMITEDInventor: Babu Padmanabhan
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Publication number: 20230226723Abstract: A continuous granulation system for obtaining conditioned granules is disclosed. The system comprises a processor configured to produce a continuous flow of granules at an outlet of the processor. The system also comprises a collection chamber positioned downstream from the processor and configured to collect the granules from the outlet. Further, the system comprises an air displacement device coupled to the collection chamber and configured to create a unidirectional flow of air at the outlet in a direction of the granules exiting the processor and away from the outlet. The unidirectional flow of air conditions the granules obtained in the collection chamber. A continuous granulation method and a continuous granule collection system for obtaining the conditioned granules is also disclosed.Type: ApplicationFiled: July 14, 2021Publication date: July 20, 2023Applicant: STEERLIFE INDIA PRIVATE LIMITEDInventors: Babu Padmanabhan, Indu Bhushan, Vinay Rao
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Patent number: 11576855Abstract: The present disclosure concerns effervescent compositions and methods of making and using the same. In some embodiments, the disclosed effervescent compositions are formed from an input blend comprising an acid and a base by granulating the input blend in a twin-screw processor. The granules formed from the input blend can be formed by an in situ granulating agent, which can be a portion of the acid that melts during granulation. In some embodiments, the effervescent compositions can be made using a twin-screw processor comprising an intake zone for receiving an input blend comprising an acid and a base; a granulation initiation zone for melting only a portion of the acid to serve as an in situ granulating agent; a granulation completion zone for granulating the input blend; and an outlet for discharging the granules.Type: GrantFiled: August 25, 2021Date of Patent: February 14, 2023Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Babu Padmanabhan, Rakshit Shetty, Vijay Kulkarni, Himadri Sen, Indu Bhushan
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Patent number: 11465327Abstract: A fractional lobe processor comprises a barrel with heating and cooling means having two parallel intersecting bores of equal diameter, wherein the centre distance between the two bores is lesser than the diameter of the bore; a shaft coupled with a plurality of screw elements to form a screw within each bore, wherein the screws are intermeshing and form at least three zones within the barrel, the zones comprising an intake zone comprising at least one deep flighted shovel element on each intermeshing screw for receiving a feed comprising an active substance and/or an excipient, a melt zone consisting of only fractional lobe elements for melting the active substance and/or an excipient to form a viscous mass or melt, and a discharge zone, wherein the melt zone is located before the discharge zone and after the intake zone; and wherein the melt zone has a plurality of fractional lobe elements on each shaft.Type: GrantFiled: April 24, 2017Date of Patent: October 11, 2022Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Indu Bhushan, Vinay Rao, Vijay Kulkarni, Chetan Chincholi, Aravind Kumar Gurram, Babu Padmanabhan
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Publication number: 20220192973Abstract: The present disclosure concerns effervescent compositions and methods of making and using the same. In some embodiments, the disclosed effervescent compositions are formed from an input blend comprising an acid and a base by granulating the input blend in a twin-screw processor. The granules formed from the input blend can be formed by an in situ granulating agent, which can be a portion of the acid that melts during granulation. In some embodiments, the effervescent compositions can be made using a twin-screw processor comprising an intake zone for receiving an input blend comprising an acid and a base; a granulation initiation zone for melting only a portion of the acid to serve as an in situ granulating agent; a granulation completion zone for granulating the input blend; and an outlet for discharging the granules.Type: ApplicationFiled: August 25, 2021Publication date: June 23, 2022Inventors: Babu PADMANABHAN, Rakshit SHETTY, Vijay KULKARNI, Himadri SEN, Indu BHUSHAN
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Patent number: 11312041Abstract: A dispersive mixing element for co-rotating twin screw extruder is disclosed. The element for co-rotating twin screw extruder comprises of a continuous flight helically formed thereon having a lead ‘L’, wherein either the flight transforms at least once from an integer lobe flight into a non-integer lobe flight in a fraction of the lead ‘L’ and transforms back to an integer lobe flight in a fraction of the lead ‘L’ or the flight transforms at least once from a non-integer lobe flight into an integer lobe flight in a fraction of the lead ‘L’ and transforms back to a non-integer lobe flight in a fraction of the lead ‘L’.Type: GrantFiled: December 3, 2018Date of Patent: April 26, 2022Assignee: Steer Engineering Private LimitedInventor: Babu Padmanabhan
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Patent number: 11247379Abstract: Methods for granulating powder in a single piece of equipment include at least the following: (a) continuously introducing the powder and a granulating fluid to the single piece of equipment; (b) passing the powder and the granulating fluid through a granulating zone of the single piece of equipment to form wet granules; (c) passing the wet granules through a drying zone of the single piece of equipment; (d) optionally passing granules through a discharge zone of the single piece of equipment; and (e) continuously discharging the granules from the single piece of equipment where the single piece of equipment is not a fluid bed processor.Type: GrantFiled: April 2, 2019Date of Patent: February 15, 2022Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Indu Bhushan, Babu Padmanabhan, Vinay Rao, Vijay Kulkarni, Chetan Chincholi, Radhika Ghike, Raja Ganeshan
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Patent number: 11247380Abstract: Methods for granulating a pharmaceutical powder in a single piece of equipment include at least the following: (a) continuously introducing the pharmaceutical powder and a granulating fluid to the single piece of equipment, (b) passing the pharmaceutical powder and the granulating fluid through a granulating zone of the single piece of equipment to form wet granules, (c) passing the wet granules through a drying zone of the single piece of equipment, (d) optionally passing granules through a discharge zone of the single piece of equipment, and (e) continuously discharging the granules from the single piece of equipment where the single piece of equipment is not a fluid bed processor.Type: GrantFiled: April 2, 2019Date of Patent: February 15, 2022Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Indu Bhushan, Babu Padmanabhan, Vinay Rao, Vijay Kulkarni, Chetan Chincholi, Radhika Ghike, Raja Ganeshan
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Patent number: 11247378Abstract: A fractional lobe processor is disclosed. The fractional lobe processor comprises an intake zone comprising at least one deep flighted shovel element on each intermeshing screw for receiving a input blend comprising an active substance and an excipient; a granulation zone consisting of only fractional lobe elements, and having a provision for introducing moisture or a binder solution, for granulating the active substance and the excipient; an optional, drying zone for drying the wet granules; and a discharge zone for discharging the granules; wherein the granulation zone is located before the discharge zone and after the intake zone; wherein the drying zone has one or more fractional lobe elements on each shaft; and wherein the granulation zone has a plurality of fractional lobe elements on each shaft.Type: GrantFiled: April 24, 2017Date of Patent: February 15, 2022Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Indu Bhushan, Babu Padmanabhan, Vinay Rao, Vijay Kulkarni, Chetan Chincholi, Radhika Ghike, Raja Ganeshan
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Patent number: 11180296Abstract: A doser cap for liquid containers can include a cap having a storage chamber enclosing powder material or active substance that can be dispensed into the liquid container by rupturing an associated seal. The doser cap can include a bottom cap, top cap, cutting unit, spiral cam slot, pushing rib, and entry groove on top cap.Type: GrantFiled: March 14, 2018Date of Patent: November 23, 2021Assignee: STEERLIFE INDIA PRIVATE LIMITEDInventors: Subba Bangera, Babu Padmanabhan, Ravi Bangera, Rohit Jagtap, Kaustubh Kulkarni
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Publication number: 20210146590Abstract: A method for producing a fused unplasticised polyvinyl chloride (UPVC) article (126) is provided. The method includes feeding an UPVC blend (103) into a co-rotating twin-screw extruder (100). The method further includes melting the UPVC blend (103) and conveying fused UPVC to an outlet (120) of the co-rotating twin-screw extruder (100). The method also includes collecting the fused UPVC from the outlet (120) at a rate of at least 100 kilograms/hour per litre of free volume (124) of the co-rotating twin-screw extruder (100).Type: ApplicationFiled: June 20, 2018Publication date: May 20, 2021Applicant: STEER ENGINEERING PRIVATE LIMITEDInventor: Babu Padmanabhan
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Publication number: 20210046439Abstract: The present disclosure relates to a process for preparing granules from an input material or a powder material. The process comprises feeding the input material for granulation in the processor using one or more powder feeders, introducing steam as a granulation activating agent in the processor, granulating the input material in presence of the steam to form granules, and optionally collecting the granules from a discharge zone of the processor, wherein feed rate of the steam into the processor is determined based on feed rate of the input material into the processor. A co-rotating twin-screw processor for preparing granules is also disclosed.Type: ApplicationFiled: August 31, 2020Publication date: February 18, 2021Inventors: Radhika Ghike, Vijay Kulkarni, Indu Bhushan, Himadri Sen, Babu Padmanabhan, Vinay Rao
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Publication number: 20200369839Abstract: A process for preparing a fiber reinforced thermoplastic is disclosed. The process includes melting a first thermoplastic and a second thermoplastic in a melting zone of a twin-screw processor, feeding at least one continuous fiber downstream of the melting zone into a melted mixture of the first thermoplastic and the second thermoplastic, incorporating the at least one continuous fiber into the melted mixture in a mixing zone, the mixing zone including at least one wave element having a continuous outer surface in the form of a helical wave, and obtaining the fiber reinforced thermoplastic from the twin screw processor. Further, a fiber reinforced thermoplastic composition prepared by an extrusion process the composition having a density between 1.3 g/cc to 1.7 g/cc and a flexural modulus of at least 4000 MPa is disclosed.Type: ApplicationFiled: December 7, 2018Publication date: November 26, 2020Inventors: Babu Padmanabhan, P. B. Raman
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Patent number: 10792634Abstract: A process for preparing granules is disclosed. The process comprises the steps of feeding the input material for granulation in a processor using one or more powder feeders, introducing steam as a granulation activating agent in the processor, granulating the input material in presence of the steam to form granules, and collecting the granules from a discharge zone of the processor. A co-rotating twin-screw processor for preparing granules is also disclosed.Type: GrantFiled: August 1, 2016Date of Patent: October 6, 2020Assignee: Intel CorporationInventors: Radhika Ghike, Vijay Kulkarni, Indu Bhushan, Himadri Sen, Babu Padmanabhan, Vinay Rao
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Publication number: 20200079559Abstract: The present invention relates to doser cap for liquid containers. More particularly the present invention relates to doser cap for liquid containers, wherein the cap has storage chamber enclosing powder material or active substance that can be dispensed into the liquid container by rupturing the seal. The doser cap of the present invention comprises bottom cap, top cap, cutting unit, spiral cam slot, pushing rib, and entry groove on top cap.Type: ApplicationFiled: March 14, 2018Publication date: March 12, 2020Inventors: SUBBA BANGERA, BABU PADMANABHAN, RAVI BANGERA, ROHIT JAGTAP, KAUSTUBH KULKARNI
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Publication number: 20190263042Abstract: Methods for granulating powder in a single piece of equipment include at least the following: (a) continuously introducing the powder and a granulating fluid to the single piece of equipment; (b) passing the powder and the granulating fluid through a granulating zone of the single piece of equipment to form wet granules; (c) passing the wet granules through a drying zone of the single piece of equipment; (d) optionally passing granules through a discharge zone of the single piece of equipment; and (e) continuously discharging the granules from the single piece of equipment where the single piece of equipment is not a fluid bed processor.Type: ApplicationFiled: April 2, 2019Publication date: August 29, 2019Inventors: Indu BHUSHAN, Babu PADMANABHAN, Vinay RAO, Vijay KULKARNI, Chetan CHINCHOLI, Radhika GHIKE, Raja GANESHAN
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Publication number: 20190263043Abstract: Methods for granulating a pharmaceutical powder in a single piece of equipment include at least the following: (a) continuously introducing the pharmaceutical powder and a granulating fluid to the single piece of equipment, (b) passing the pharmaceutical powder and the granulating fluid through a granulating zone of the single piece of equipment to form wet granules, (c) passing the wet granules through a drying zone of the single piece of equipment, (d) optionally passing granules through a discharge zone of the single piece of equipment, and (e) continuously discharging the granules from the single piece of equipment where the single piece of equipment is not a fluid bed processor.Type: ApplicationFiled: April 2, 2019Publication date: August 29, 2019Inventors: Indu Bhushan, Babu Padmanabhan, Vinay Rao, Vijay Kulkarni, Chetan Chincholi, Radhika Ghike, Raja Ganeshan