Patents by Inventor Roger Lacasse
Roger Lacasse 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: 9216918Abstract: The present invention relates to the treatment of wastewater by electrochemical reactions. More particularly, an Electro-Reaction Unit (ERU) is disclosed. The ERU is provided with at least one electrolytic cell comprising a pair of self-cleaned electrodes for purifying wastewater. Along with electro-reactions, electrodes of the ERU are submitted to passivation, i.e. coverage with an oxide layer. The present invention provides a solution for alleviating passivation with a self-cleaning system comprising hard elements, confined in a cage and movable therein, for bombardment of the electrodes and rupture of the oxide layer. The present invention further provides a related process.Type: GrantFiled: December 1, 2011Date of Patent: December 22, 2015Assignee: PREMIER TECH TECHNOLOGIES LTEEInventors: Pierre Naider Fanfan, Roger Lacasse, Marc-Andre Malenfant
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Publication number: 20120138482Abstract: The present invention relates to the treatment of wastewater by electrochemical reactions. More particularly, an Electro-Reaction Unit (ERU) is disclosed. The ERU is provided with at least one electrolytic cell comprising a pair of self-cleaned electrodes for purifying wastewater. Along with electro-reactions, electrodes of the ERU are submitted to passivation, i.e. coverage with an oxide layer. The present invention provides a solution for alleviating passivation with a self-cleaning system comprising hard elements, confined in a cage and movable therein, for bombardment of the electrodes and rupture of the oxide layer. The present invention further provides a related process.Type: ApplicationFiled: December 1, 2011Publication date: June 7, 2012Inventors: Pierre Naider FANFAN, Roger LACASSE, Marc-Andre MALENFANT
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Patent number: 7790035Abstract: Described are a tertiary disinfection system and process for treating a liquid effluent from a domestic secondary treatment unit. The liquid effluent has pathogenic micro-organisms, remaining suspended solids and dissolved organic pollutants. The system has an inlet, a subterranean initial treatment zone filled with a filtering material for removing some suspended solids, dissolved organic pollutants and pathogenic micro-organisms. The initial treatment zone allows the liquid effluent to percolate downward. The system also has a subterranean polishing zone extending horizontally outward from the initial treatment zone, and filled with a filtering material having pore sizes allowing upward capillary dispersion of the liquid effluent. The system also has a subterranean aeration zone having an interface with the initial treatment zone and the polishing zone, to provide aeration enabling aerobic accommodation of microflora for disinfection of the effluent.Type: GrantFiled: March 13, 2008Date of Patent: September 7, 2010Assignee: Premier Tech Technologies LTEEInventors: Jean-Pierre Dautais, Roger Lacasse, Denis Pettigrew, Pierre Talbot
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Publication number: 20090230057Abstract: Described are a tertiary disinfection system and process for treating a liquid effluent from a domestic secondary treatment unit. The liquid effluent has pathogenic micro-organisms, remaining suspended solids and dissolved organic pollutants. The system has an inlet, a subterranean initial treatment zone filled with a filtering material for removing some suspended solids, dissolved organic pollutants and pathogenic micro-organisms. The initial treatment zone allows the liquid effluent to percolate downward. The system also has a subterranean polishing zone extending horizontally outward from the initial treatment zone, and filled with a filtering material having pore sizes allowing upward capillary dispersion of the liquid effluent. The system also has a subterranean aeration zone having an interface with the initial treatment zone and the polishing zone, to provide aeration enabling aerobic accommodation of microflora for disinfection of the effluent.Type: ApplicationFiled: March 13, 2008Publication date: September 17, 2009Applicant: PREMIER TECH TECHNOLOGIES LTEEInventors: Jean-Pierre Dautais, Roger Lacasse, Denis Pettigrew, Pierre Talbot
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Patent number: 7097768Abstract: A biofilter material for biofiltering a fluid is disclosed. This biofilter material comprises fragments of coconut mesocarp. A wastewater treatment system is also disclosed and comprises a filter bed and a water distribution system. The filter bed comprises fragments of coconut mesocarp as a biofilter material.Type: GrantFiled: September 22, 2003Date of Patent: August 29, 2006Assignee: Premier Tech 2000 LTEEInventors: Pierre Talbot, Denis Pettigrew, Roger Lacasse, Ginette Bélanger, Yves Arcand, Jean-Pierre Dautais
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Patent number: 6942796Abstract: A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passage for a flow of liquid between each two of the lamellar structures. Each passage has an inlet for receiving an inflow of liquid to be filtered and an outlet for discharging an outflow of filtered liquid. In each of the passages, an overflow dam wall following a sinuous path is obstructing the flow of liquid and retains particulate matter contained in the liquid. The filter unit is mounted vertically in a filter housing. The invention also concerns a prefilter comprising a filter unit as described above mounted vertically in a filter housing.Type: GrantFiled: March 23, 2001Date of Patent: September 13, 2005Assignee: Premier TechInventors: Roger Lacasse, Pierre Talbot, Henri Ouellet, Bernard Juneau
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Patent number: 6886588Abstract: A buoyancy flushing apparatus is disclosed which comprises a reservoir for accumulating liquid, having an inlet for receiving liquid and an outlet chamber recessed in a bottom wall of the reservoir. The outlet chamber includes an outlet for draining liquid out of the reservoir. The apparatus further comprises an outlet valve movable between a down position where liquid accumulates in the reservoir and a raised position where liquid accumulated in the reservoir is flushed out via the outlet. The outlet valve comprises a ballast unit sized and shaped to fit loosely in the outlet chamber when said valve is in the down position; and a float unit topping the ballast unit to move the valve in the raised position by buoyancy when a sufficient amount of liquid is accumulated in the reservoir, thereby providing a passageway for liquid between the bottom wall of the reservoir and the valve leading to the outlet in the outlet chamber to flush liquid out of the reservoir.Type: GrantFiled: September 17, 2003Date of Patent: May 3, 2005Inventors: Marc-André Malenfant, Yves Bérubé, Nicolas Viel, Roger Lacasse, Jean-Pierre Dautais
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Publication number: 20040124139Abstract: A biofilter material for biofiltering a fluid is disclosed. This biofilter material comprises fragments of coconut mesocarp. A wastewater treatment system is also disclosed and comprises a filter bed and a water distribution system. The filter bed comprises fragments of coconut mesocarp as a biofilter material.Type: ApplicationFiled: September 22, 2003Publication date: July 1, 2004Inventors: Pierre Talbot, Denis Pettigrew, Roger Lacasse, Ginette Belanger, Yves Arcand, Jean-Pierre Dautais
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Publication number: 20040111794Abstract: A buoyancy flushing apparatus is disclosed which comprises a reservoir for accumulating liquid, having an inlet for receiving liquid and an outlet chamber recessed in a bottom wall of the reservoir. The outlet chamber includes an outlet for draining liquid out of the reservoir. The apparatus further comprises an outlet valve movable between a down position where liquid accumulates in the reservoir and a raised position where liquid accumulated in the reservoir is flushed out via the outlet. The outlet valve comprises a ballast unit sized and shaped to fit loosely in the outlet chamber when said valve is in the down position; and a float unit topping the ballast unit to move the valve in the raised position by buoyancy when a sufficient amount of liquid is accumulated in the reservoir, thereby providing a passageway for liquid between the bottom wall of the reservoir and the valve leading to the outlet in the outlet chamber to flush liquid out of the reservoir.Type: ApplicationFiled: September 17, 2003Publication date: June 17, 2004Inventors: Marc-Andre Malenfant, Yves Berube, Nicolas Viel, Roger Lacasse, Jean-Pierre Dautais
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Patent number: 6602407Abstract: An oriented structure for treating a fluid, comprising an inlet end for receiving a fluid to be treated and an outlet end opposite the inlet end and from which a treated fluid is discharged, the fluid being allowed to flow into the structure from the inlet end to the outlet end defining a flowing direction. The oriented structure comprises a juxtaposition of layers of porous material having a different porosity, each layer spanning from the inlet end to the outlet end of the structure whereby in use the layers are oriented generally parallel to the flowing direction of the fluid. The oriented structure is designed so to better control the different biological and physical phenomena related to the accumulation or exchange processes taking place in the structure.Type: GrantFiled: July 13, 2001Date of Patent: August 5, 2003Assignee: Premier Tech 2000 LteeInventors: Pierre Talbot, Roger Lacasse, Yves Arcand, Olivier Vermeersch, Jacek Mlynarek
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Publication number: 20020023871Abstract: An oriented structure for treating a fluid, comprising an inlet end for receiving a fluid to be treated and an outlet end opposite the inlet end and from which a treated fluid is discharged, the fluid being allowed to flow into the structure from the inlet end to the outlet end defining a flowing direction. The oriented structure comprises a juxtaposition of layers of porous material having a different porosity, each layer spanning from the inlet end to the outlet end of the structure whereby in use the layers are oriented generally parallel to the flowing direction of the fluid. The oriented structure is designed so to better control the different biological and physical phenomena related to the accumulation or exchange processes taking place in the structure.Type: ApplicationFiled: July 13, 2001Publication date: February 28, 2002Inventors: Pierre Talbot, Roger Lacasse, Yves Arcand, Olivier Vermeersch, Jacek Mlynarek
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Publication number: 20010023845Abstract: A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passage for a flow of liquid between each two of the lamellar structures. Each passage has an inlet for receiving an inflow of liquid to be filtered and an outlet for discharging an outflow of filtered liquid. In each of the passages, an overflow dam wall following a sinuous path is obstructing the flow of liquid and retains particulate matter contained in the liquid. Mounting means are also provided for mounting the filter unit vertically in a filter housing. The invention also concerns a prefilter comprising a filter unit as described above mounted vertically in a filter housing. Such prefilter can advantageously be used at the outlet of a septic tank.Type: ApplicationFiled: March 23, 2001Publication date: September 27, 2001Inventors: Roger Lacasse, Pierre Talbot, Henri Ouellet, Bernard Juneau