Patents by Inventor Alexe Bojovschi
Alexe Bojovschi 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).
-
Patent number: 11413629Abstract: In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles.Type: GrantFiled: September 23, 2019Date of Patent: August 16, 2022Assignee: International Business Machines CorporationInventors: Julia Baldauf, Alexe Bojovschi, Benjamin S. Mashford, Christine Schieber, George Yiapanis
-
Patent number: 11195132Abstract: A maintenance prioritization method, system, and computer program product, include collecting information including image data and status data for a plurality of objects of interest, building a three-dimensional image for each object, and estimating a risk factor of failure for each object by analyzing the information and the three-dimensional image of the object to compare with known characteristics of the object and a reference object description.Type: GrantFiled: October 31, 2016Date of Patent: December 7, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alexe Bojovschi, Laura Irina Rusu, John Michael Wagner
-
Patent number: 10671097Abstract: A flocculation control system that floats particles that attach to nano and/or micro bubbles out of a liquid includes at least one sensing system, at least one processing system, and at least one fluid additive control system. The at least one sensing system is configured to reproduce one or more nano-bubbles with one or more particles suspended in a fluid. The at least one processing system is configured to measure, using outputs of the at least one sensing system, incident angles between the one or more nano-bubbles and the one or more particles suspended in the fluid. And the at least one fluid additive control system is configured to adjust, based on at least the incident angles, an amount of a surfactant being added to the fluid.Type: GrantFiled: April 2, 2019Date of Patent: June 2, 2020Assignee: International Business Machines CorporationInventors: Alexe Bojovschi, Rajib Chakravorty, Sridhar Kannam, Xi Liang
-
Publication number: 20200016609Abstract: In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles.Type: ApplicationFiled: September 23, 2019Publication date: January 16, 2020Inventors: Julia Baldauf, Alexe Bojovschi, Benjamin S. Mashford, Christine Schieber, George Yiapanis
-
Patent number: 10464075Abstract: In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles.Type: GrantFiled: December 22, 2015Date of Patent: November 5, 2019Assignee: International Business Machines CorporationInventors: Julia Baldauf, Alexe Bojovschi, Benjamin S. Mashford, Christine Schieber, George Yiapanis
-
Publication number: 20190240678Abstract: A method of recovering particles from a liquid, a froth flotation apparatus, and a method of recovering particles in a flotation cell are disclosed. In an embodiment, the method comprises a technique of exposing the particles to first-size bubbles having a first predetermined size; the first-size bubbles adhering to the particles; and exposing the particles in a liquid, with the first-size bubbles adhering to the particles, to second-size bubbles having a second predetermined size, the second predetermined size being at least approximately ten times larger than the first predetermined size. The method further comprises the second-size bubbles adhering to the particles and engulfing the first-size bubbles on the particles; and using the second-size bubbles adhering to the particles to recover the particles from the liquid. In one embodiment a first surfactant is used to form the first-size bubbles, and a second surfactant is used to form the second-size bubbles.Type: ApplicationFiled: April 19, 2019Publication date: August 8, 2019Inventors: Julia Baldauf, Alexe Bojovschi, Stephen Moore
-
Patent number: 10372144Abstract: A flocculation control system that floats particles that attach to nano and/or micro bubbles out of a liquid includes at least one sensing system, at least one processing system, and at least one fluid additive control system. The at least one sensing system is configured to reproduce one or more nano-bubbles with one or more particles suspended in a fluid. The at least one processing system is configured to measure, using outputs of the at least one sensing system, incident angles between the one or more nano-bubbles and the one or more particles suspended in the fluid. And the at least one fluid additive control system is configured to adjust, based on at least the incident angles, an amount of a surfactant being added to the fluid.Type: GrantFiled: November 30, 2015Date of Patent: August 6, 2019Assignee: International Business Machines CorporationInventors: Alexe Bojovschi, Rajib Chakravorty, Sridhar Kannam, Xi Liang
-
Publication number: 20190227578Abstract: A flocculation control system that floats particles that attach to nano and/or micro bubbles out of a liquid includes at least one sensing system, at least one processing system, and at least one fluid additive control system. The at least one sensing system is configured to reproduce one or more nano-bubbles with one or more particles suspended in a fluid. The at least one processing system is configured to measure, using outputs of the at least one sensing system, incident angles between the one or more nano-bubbles and the one or more particles suspended in the fluid. And the at least one fluid additive control system is configured to adjust, based on at least the incident angles, an amount of a surfactant being added to the fluid.Type: ApplicationFiled: April 2, 2019Publication date: July 25, 2019Inventors: Alexe Bojovschi, Rajib CHAKRAVORTY, Sridhar KANNAM, Xi LIANG
-
Patent number: 10315202Abstract: A method of recovering particles from a liquid, a froth flotation apparatus, and a method of recovering particles in a flotation cell are disclosed. In an embodiment, the method comprises a technique of exposing the particles to first-size bubbles having a first predetermined size; the first-size bubbles adhering to the particles; and exposing the particles in a liquid, with the first-size bubbles adhering to the particles, to second-size bubbles having a second predetermined size, the second predetermined size being at least approximately ten times larger than the first predetermined size. The method further comprises the second-size bubbles adhering to the particles and engulfing the first-size bubbles on the particles; and using the second-size bubbles adhering to the particles to recover the particles from the liquid. In one embodiment a first surfactant is used to form the first-size bubbles, and a second surfactant is used to form the second-size bubbles.Type: GrantFiled: July 14, 2015Date of Patent: June 11, 2019Assignee: International Business Machines CorporationInventors: Julia Baldauf, Alexe Bojovschi, Stephen Moore
-
Patent number: 10155229Abstract: Nanobubbles are employed to bridge microbubbles and non-buoyant particles, thereby creating sufficient capillary forces between the particles and microbubbles such that relatively large, heavy particles can be separated from an aqueous slurry. Nanobubbles are formed on hydrophobic particle surfaces. The microbubbles, which function as collecting air bubbles, form attachments with the particles. The nanobubbles create additional capillary attachment forces between the particles and microbubbles, allowing the microbubbles to rise with the attached particles to the top of the slurry for separation and recovery.Type: GrantFiled: August 10, 2015Date of Patent: December 18, 2018Assignee: International Business Machines CorporationInventors: Julia S. Baldauf, Alexe Bojovschi, Stephen M. Moore, Priscilla R. Rogers, Christine Schieber
-
Publication number: 20180121845Abstract: A maintenance prioritization method, system, and computer program product, include collecting information including image data and status data for a plurality of objects of interest, building a three-dimensional image for each object, and estimating a risk factor of failure for each object by analyzing the information and the three-dimensional image of the object to compare with known characteristics of the object and a reference object description.Type: ApplicationFiled: October 31, 2016Publication date: May 3, 2018Inventors: Alexe BOJOVSCHI, Laura Irina Rusu, John Michael Wagner
-
Publication number: 20170173594Abstract: In one example, a method includes providing a pulp composed of a combination of particulate materials including particles of a target material. The pulp is mixed with a collector composed of anisotropic particles having at least two separate spatial domains that have different physiochemical properties, and the mixture of pulp and collector is fed into an aqueous solution containing air bubbles.Type: ApplicationFiled: December 22, 2015Publication date: June 22, 2017Inventors: Julia Baldauf, Alexe Bojovschi, Benjamin S. Mashford, Christine Schieber, George Yiapanis
-
Publication number: 20170152153Abstract: A flocculation control system that floats particles that attach to nano and/or micro bubbles out of a liquid includes at least one sensing system, at least one processing system, and at least one fluid additive control system. The at least one sensing system is configured to reproduce one or more nano-bubbles with one or more particles suspended in a fluid. The at least one processing system is configured to measure, using outputs of the at least one sensing system, incident angles between the one or more nano-bubbles and the one or more particles suspended in the fluid. And the at least one fluid additive control system is configured to adjust, based on at least the incident angles, an amount of a surfactant being added to the fluid.Type: ApplicationFiled: November 30, 2015Publication date: June 1, 2017Inventors: Alexe BOJOVSCHI, Rajib CHAKRAVORTY, Sridhar KANNAM, XI LIANG
-
Patent number: 9652841Abstract: A control system for a froth flotation system receives inputs from one or more sensors comprising images of a fluid having bubbles and particles therein; some of the bubbles are attached to some of the particles and suspended in the fluid. For at least some of the bubbles with attached particles, it is determined from the inputs at least two contact angles at different locations at which the respective bubble is attached to the particle. These contact angles are used to predict a process improvement by which bubbles would more efficiently float the particles out of the fluid, as compared to that represented by the input images. An output is then provided for driving a graphical display screen, the output comprising at least one of: a) a graphical representation of the determined at least two contact angles; and b) a graphical representation of the predicted process improvement.Type: GrantFiled: July 13, 2015Date of Patent: May 16, 2017Assignee: International Business Machines CorporationInventors: Alexe Bojovschi, Xi Liang
-
Patent number: 9606164Abstract: An early fault detection system for a low voltage distribution network including: at least two detectors, each located on one of two power poles at either end of a section of a power distribution line; each detector includes a GPS unit, an uninterruptable power supply, a communication means to send data to a base station, antenna sensors having a bandwidth range of 1 MHz to 3 GHz for each wire in the power line, and a processor receiving signals from each sensor and collecting data relating to a maximum value, a time of maximum value, a minimum value, and a time of minimum value for partial discharge signals within the bandwidth range; and the processor or base station being programmed to analyze the collected data to identify a location of pulses above a predetermined value and record the number of such pulses at each location over a predetermined time interval.Type: GrantFiled: December 24, 2012Date of Patent: March 28, 2017Assignee: DX TECH PTY LTDInventors: Khoi Loon Wong, Alexe Bojovschi
-
Publication number: 20170043356Abstract: Nanobubbles are employed to bridge microbubbles and non-buoyant particles, thereby creating sufficient capillary forces between the particles and microbubbles such that relatively large, heavy particles can be separated from an aqueous slurry. Nanobubbles are formed on hydrophobic particle surfaces. The microbubbles, which function as collecting air bubbles, form attachments with the particles. The nanobubbles create additional capillary attachment forces between the particles and microbubbles, allowing the microbubbles to rise with the attached particles to the top of the slurry for separation and recovery.Type: ApplicationFiled: August 10, 2015Publication date: February 16, 2017Inventors: Julia S. Baldauf, Alexe Bojovschi, Stephen M. Moore, Priscilla R. Rogers, Christine Schieber
-
Publication number: 20170014834Abstract: A method of recovering particles from a liquid, a froth flotation apparatus, and a method of recovering particles in a flotation cell are disclosed. In an embodiment, the method comprises a technique of exposing the particles to first-size bubbles having a first predetermined size; the first-size bubbles adhering to the particles; and exposing the particles in a liquid, with the first-size bubbles adhering to the particles, to second-size bubbles having a second predetermined size, the second predetermined size being at least approximately ten times larger than the first predetermined size. The method further comprises the second-size bubbles adhering to the particles and engulfing the first-size bubbles on the particles; and using the second-size bubbles adhering to the particles to recover the particles from the liquid. In one embodiment a first surfactant is used to form the first-size bubbles, and a second surfactant is used to form the second-size bubbles.Type: ApplicationFiled: July 14, 2015Publication date: January 19, 2017Inventors: Julia Baldauf, Alexe Bojovschi, Stephen Moore
-
Publication number: 20170011506Abstract: A control system for a froth flotation system receives inputs from one or more sensors comprising images of a fluid having bubbles and particles therein; some of the bubbles are attached to some of the particles and suspended in the fluid. For at least some of the bubbles with attached particles, it is determined from the inputs at least two contact angles at different locations at which the respective bubble is attached to the particle. These contact angles are used to predict a process improvement by which bubbles would more efficiently float the particles out of the fluid, as compared to that represented by the input images. An output is then provided for driving a graphical display screen, the output comprising at least one of: a) a graphical representation of the determined at least two contact angles; and b) a graphical representation of the predicted process improvement.Type: ApplicationFiled: July 13, 2015Publication date: January 12, 2017Inventors: Alexe Bojovschi, Xi Liang
-
Publication number: 20140354293Abstract: A system for the early detection of faults in a low voltage distribution network in which at least two detectors are each located on one of two power poles at either end of a section of a power distribution line, each detector includes a GPS unit, an uninterruptable power supply, a communication means to send data to a base station, antenna sensors having a bandwidth of 1 MHz to 3 GHz for each wire in the power line, a processor to receive signals from each sensor and collect data relating to the maximum value, time of maximum value, minimum value and time of minimum value for partial discharge signals within the range and the processor or base station being programmed to analyse the collected data to identify location of pulses above a predetermined value and record the number of such pulses at each location over a predetermined time interval to enable identification of likely sites of faults in the distribution line.Type: ApplicationFiled: December 24, 2012Publication date: December 4, 2014Inventors: Khoi Loon Wong, Alexe Bojovschi