Patents by Inventor Daniel Stefanini
Daniel Stefanini 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: 9140412Abstract: Apparatus for treating a fluid in a conduit by the application thereto of radio-frequency electro-magnetic signals, includes a core element of magnetically-permeable material extending around the conduit, and one or more primary coils through which the core element extends and is energized with radio-frequency electrical signals by at least one signal generator; wherein at least one of the primary coils has an extent and/or disposition circumferentially of the core element and the conduit such as to establish an effective magnetic field throughout the core element.Type: GrantFiled: October 28, 2011Date of Patent: September 22, 2015Assignee: HYDROPATH TECHNOLOGY LIMITEDInventors: Daniel Stefanini, Denzil Rodrigues
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Publication number: 20150191373Abstract: An apparatus establishes electrodes in a region of an electrically conductive liquid flowing along a pipe. The apparatus includes a core of magnetically conductive material surrounding the pipe, an energizable primary coil that creates an electric field within the liquid, a secondary passage connected at the region, and a flow restriction for restricting the flow of the liquid in the secondary passage to create an electrical resistance along which an electrical current flows through the liquid.Type: ApplicationFiled: March 19, 2015Publication date: July 9, 2015Applicant: HYDROPATH TECHNOLOGY LIMITEDInventor: Daniel STEFANINI
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Patent number: 9032610Abstract: Electrodes are established in a region of an electrically conductive liquid flowing along a pipe, by surrounding the pipe containing the liquid with a core of magnetically conductive material which passes through a primary coil energized by an electrical signal to create an electric field within the liquid, by connecting a secondary passage at the region for the liquid to flow between opposite sides of the core, and by restricting the flow of the liquid in the secondary passage to create an electrical resistance along which an electrical current flows through the liquid.Type: GrantFiled: April 7, 2010Date of Patent: May 19, 2015Assignee: HYDROPATH TECHNOLOGY LIMITEDInventor: Daniel Stefanini
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Publication number: 20130269810Abstract: Apparatus for treating a fluid in a conduit by the application thereto of radio-frequency electro-magnetic signals, includes a core element of magnetically-permeable material extending around the conduit, and one or more primary coils through which the core element extends and is energized with radio-frequency electrical signals by at least one signal generator; wherein at least one of the primary coils has an extent and/or disposition circumferentially of the core element and the conduit such as to establish an effective magnetic field throughout the core element.Type: ApplicationFiled: October 28, 2011Publication date: October 17, 2013Applicant: HYDROPATH HOLDINGS LIMITEDInventors: Daniel Stefanini, Denzil Rodrigues
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Patent number: 8231786Abstract: Water treatment method and apparatus according to which supply water containing dissolved matter is delivered to at least one treatment surface. An electric field is created in the vicinity of the treatment surface to cause a hydration layer to be established due to the bipolar nature of the water molecules. Water is then extracted from the hydration layer. Such extraction may be effected by osmosis or by removal of the element (s) from the supply water with the hydration layer water thereon, dehydration layer water subsequently being extracted from the element (s). The method has been devised to reduce energy consumption for the purpose of providing potable water from seawater.Type: GrantFiled: October 12, 2006Date of Patent: July 31, 2012Assignee: HydroPath Holdings LimitedInventor: Daniel Stefanini
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Patent number: 8168059Abstract: A method for inhibiting corrosion in at least one required region of an elongate metal structure, comprising applying a high-frequency electromagnetic signal to the structure in a manner such that a voltage standing wave is established in the structure with a corrosion-inhibiting potential at the required region(s) of the structure. The method is advantageously applied to an oil well riser pipe, to inhibit corrosion of the external surface thereof in the vicinity of an oil production zone.Type: GrantFiled: February 29, 2008Date of Patent: May 1, 2012Assignee: Hydropath Holdings LimitedInventor: Daniel Stefanini
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Publication number: 20120096706Abstract: A method, and apparatus, wherein an effect of establishing electrodes in a region of a liquid is achieved by providing a core of magnetically-conductive material around a lateral wall containing the region of the liquid, the core of magnetically conductive material passing through a primary coil energised by an electrical signal, and wherein respective parts of the region of the liquid on opposite sides of the magnetically conductive core are connected by a passage containing the liquid, the passage and liquid affording a selected electrical resistance.Type: ApplicationFiled: April 7, 2010Publication date: April 26, 2012Inventor: Daniel Stefanini
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Patent number: 8033334Abstract: A method of treating liquid, particularly an oil/water mixture, in an oil well pipe, wherein a radio frequency propagating electrical field is established in the liquid in the pipe cause the formation of seed crystals or scale-forming material in the liquid, on which seed crystals asphaltenes and/or paraffin waxes in the liquid are deposited so that they are carried through the pipe with the liquid in preference to being deposited on the pipe wall.Type: GrantFiled: August 9, 2007Date of Patent: October 11, 2011Assignee: Hydropath Holdings LimitedInventor: Daniel Stefanini
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Patent number: 8029669Abstract: Apparatus for treating a fluid in a conduit, comprising first and second core elements of magnetically conductive material adapted to be mounted to the conduit to surround same at spaced positions therealong; and means for establishing radio frequency magnetic fluxes in said core elements, for generating respective electromagnetic fields in the fluid to be treated extending from spaced positions along the conduit.Type: GrantFiled: December 20, 2005Date of Patent: October 4, 2011Assignee: Hydropath Holdings LimitedInventor: Daniel Stefanini
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Publication number: 20100186958Abstract: A method of treating liquid, particularly an oil/water mixture, in an oil well pipe, wherein a radio frequency propagating electrical field is established in the liquid in the pipe cause the formation of seed crystals or scale-forming material in the liquid, on which seed crystals asphaltenes and/or paraffin waxes in the liquid are deposited so that they are carried through the pipe with the liquid in preference to being deposited on the pipe wall.Type: ApplicationFiled: August 9, 2007Publication date: July 29, 2010Applicant: HYDROPATH HOLDINGS LIMITEDInventor: Daniel Stefanini
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Publication number: 20100101933Abstract: A method for inhibiting corrosion in at least one required region of an elongate metal structure, comprising applying a high-frequency electromagnetic signal to the structure in a manner such that a voltage standing wave is established in the structure with a corrosion-inhibiting potential at the required region(s) of the structure. The method is advantageously applied to an oil well riser pipe, to inhibit corrosion of the external surface thereof in the vicinity of an oil production zone.Type: ApplicationFiled: February 29, 2008Publication date: April 29, 2010Inventor: Daniel Stefanini
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Publication number: 20090218225Abstract: Water treatment method and apparatus according to which supply water containing dissolved matter is delivered to at least one treatment surface. An electric field is created in the vicinity of the treatment surface to cause a hydration layer to be established due to the bipolar nature of the water molecules. Water is then extracted from the hydration layer. Such extraction may be effected by osmosis or by removal of the element (s) from the supply water with the hydration layer water thereon, dehydration layer water subsequently being extracted from the element (s). The method has been devised to reduce energy consumption for the purpose of providing potable water from seawater.Type: ApplicationFiled: October 12, 2006Publication date: September 3, 2009Applicant: Hydropath Holdings LimitedInventor: Daniel Stefanini
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Publication number: 20080185328Abstract: Apparatus for treating a fluid in a conduit, comprising first and second core elements of magnetically conductive material adapted to be mounted to the conduit to surround same at spaced positions therealong; and means for establishing radio frequency magnetic fluxes in said core elements, for generating respective electromagnetic fields in the fluid to be treated extending from spaced positions along the conduit.Type: ApplicationFiled: December 20, 2005Publication date: August 7, 2008Applicant: Hydropath Holdings LimitedInventor: Daniel Stefanini
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Patent number: 5935433Abstract: An arrangement for, and a method of, treating fluids, e.g., conditioning water in a pipe to resist scale deposits from building up in the pipe, comprise a primary coil mounted exteriorly of the pipe, and an electronic circuit for energizing the primary coil to generate a succession of radio frequency signals that form an electromagnetic field in the water. The field has generally circular flux lines in generally co-axial relation with the pipe, and is propagated along the entire pipe.Type: GrantFiled: October 24, 1997Date of Patent: August 10, 1999Inventor: Daniel Stefanini
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Patent number: 5667677Abstract: A method and apparatus for treating a fluid such as water in a conduit, for the purpose of inhibiting scale formation of corrosion, wherein a succession or radio frequency signals are used to create an electromagnetic field having generally circular flux lines in coaxial relation with the conduit, the field being propagated along the axis of the conduit. The field is created by a core mounted in a housing that embraces the conduit.Type: GrantFiled: May 3, 1996Date of Patent: September 16, 1997Inventor: Daniel Stefanini
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Patent number: 5514283Abstract: An arrangement for, and a method of, treating fluids, e.g., conditioning water in a pipe to resist scale deposits from building up in the pipe, comprise a primary coil mounted exteriorly of the pipe, and an electronic circuit for energizing the primary coil to generate a succession of radio frequency signals that form an electromagnetic field in the water. The field has generally circular flux lines in generally co-axial relation with the pipe, and is propagated along the entire pipe.Type: GrantFiled: December 21, 1993Date of Patent: May 7, 1996Inventor: Daniel Stefanini
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Patent number: 4863344Abstract: A centrifugal pump comprises impeller blades which are pivoted at their inner ends to a rotor so that the impeller blades can rotate relatively thereto between two extreme positionss. The extreme positions are defined by stop means in the form of pins. The construction enables the centrifugal pump to be operated efficiently when driven in either direction, the blades being allowed to flex during operation.Type: GrantFiled: May 20, 1988Date of Patent: September 5, 1989Inventor: Daniel Stefanini