Patents by Inventor Bjorn Magne Sundal
Bjorn Magne Sundal 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: 20230384463Abstract: A radon gas sensor comprising: a diffusion chamber; a photodiode positioned inside the diffusion chamber; and a photomultiplier positioned inside the diffusion chamber; wherein a scintillating material is provided on at least a part of an inner surface of the diffusion chamber. The photomultiplier detects more alpha particles, but cannot distinguish the energies of different alpha particles. On the other hand, the photodiode can distinguish different decays because the magnitude of the signal generated by the photodiode is proportional to the kinetic energy of the alpha particle striking it. Thus, the photodiode produces spectral data. The spectral data is used to estimate the amount of Polonium that is adhering to aerosols. This is used to apply a correction factor to the data to provide a better estimate of the true Radon concentration in the chamber. This can be combined with the count data of the photomultiplier for overall improved data.Type: ApplicationFiled: September 21, 2021Publication date: November 30, 2023Applicant: Airthings ASAInventor: Bjørn Magne SUNDAL
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Publication number: 20230375723Abstract: A sensor, comprising: a printed circuit board; a detector mounted on the printed circuit board; an inner dome that is electrically conductive and is mounted on the printed circuit board so as to form a diffusion chamber around the detector; and an outer dome that is electrically conductive and surrounding the inner dome. The dual dome construction allows a stronger electric field to be generated inside the inner dome. The strength of the electric field is determined by the voltage of the detector, the voltage of the inner dome and the distance between them. The detector has a maximum voltage that can safely be applied to it without damaging the detector. With the dual dome design, the inner dome can be biased to a higher potential, thereby increasing the strength of the electric field inside the inner dome, while still shielding that high voltage via the outer dome.Type: ApplicationFiled: September 21, 2021Publication date: November 23, 2023Applicant: Airthings ASAInventor: Bjørn Magne SUNDAL
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Publication number: 20230375724Abstract: A sensor comprising: a printed circuit board; a photosensor mounted on a first side of the printed circuit board; and a light source mounted on a second, opposite side; wherein the light source is arranged to transmit light through at least a portion of the printed circuit board, which is impermeable to air. Positioning of the light source on the opposite side of the printed circuit board from the photosensor means that the bulk of the printed circuit board lies between the light source and the photosensor, obstructing direct transmission of light from the light source to the photosensor. However, light can be transmitted through the printed circuit board itself without drilling a hole through the printed circuit board. In this way, the light source can be mounted on the opposite side of the printed circuit board from the photosensor while still transmitting light to the photosensor.Type: ApplicationFiled: September 21, 2021Publication date: November 23, 2023Applicant: Airthings ASAInventor: Bjørn Magne SUNDAL
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Patent number: 10921465Abstract: A method of measuring a radon concentration or a radon exposure level comprising: placing a plurality of individual radon measurement instruments at locations, each instrument being capable of data output; receiving radon measurement data from each of said plurality of instruments; combining said data from said plurality of instruments into a single data set; and calculating a radon concentration or radon exposure value from said single data set. Using a plurality of individual detectors and combining their data provides a much better overall analysis of radon concentration or radon exposure level. The calculated value may include producing an average of the radon concentrations across the multiple instruments. The average may be weighted with weights determined according to different locations such as proximity to ventilation devices or based on the time that an average user spends in each location.Type: GrantFiled: July 10, 2015Date of Patent: February 16, 2021Assignee: Airthings ASInventors: Koki Yoshioka, Bjørn Magne Sundal
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Patent number: 10534094Abstract: A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts. This allows a reduction in size of the instrument without compromising the size of the diffusion chamber. Additionally, a tubular projection is formed integrally with one of the housing parts to form part of a Faraday cage for shielding an amplifier circuit of the instrument.Type: GrantFiled: May 13, 2016Date of Patent: January 14, 2020Assignee: Airthings ASInventors: Bjorn Magne Sundal, Erlend Bolle, Koki Yoshioka
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Publication number: 20170160402Abstract: A method of measuring a radon concentration or a radon exposure level comprising: placing a plurality of individual radon measurement instruments at locations, each instrument being capable of data output; receiving radon measurement data from each of said plurality of instruments; combining said data from said plurality of instruments into a single data set; and calculating a radon concentration or radon exposure value from said single data set. Using a plurality of individual detectors and combining their data provides a much better overall analysis of radon concentration or radon exposure level. The calculated value may include producing an average of the radon concentrations across the multiple instruments. The average may be weighted with weights determined according to e.g. different locations such as proximity to ventilation devices or based on the time that an average user spends in each location.Type: ApplicationFiled: July 10, 2015Publication date: June 8, 2017Applicant: Airthings ASInventors: Koki Yoshioka, Bjørn Magne Sundal
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Publication number: 20160299235Abstract: A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts. This allows a reduction in size of the instrument without compromising the size of the diffusion chamber. Additionally, a tubular projection is formed integrally with one of the housing parts to form part of a Faraday cage for shielding an amplifier circuit of the instrument.Type: ApplicationFiled: May 13, 2016Publication date: October 13, 2016Applicant: Corentium ASInventors: Bjorn Magne Sundal, Erlend Bolle, Koki Yoshioka
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Patent number: 9354214Abstract: A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts. This allows a reduction in size of the instrument without compromising the size of the diffusion chamber. Additionally, a tubular projection is formed integrally with one of the housing parts to form part of a Faraday cage for shielding an amplifier circuit of the instrument.Type: GrantFiled: July 19, 2012Date of Patent: May 31, 2016Assignee: Corentium ASInventors: Bjorn Magne Sundal, Erlend Bolle, Koki Yoshioka
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Publication number: 20140157864Abstract: A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts. This allows a reduction in size of the instrument without compromising the size of the diffusion chamber. Additionally, a tubular projection is formed integrally with one of the housing parts to form part of a Faraday cage for shielding an amplifier circuit of the instrument.Type: ApplicationFiled: July 19, 2012Publication date: June 12, 2014Applicant: Corentium ASInventors: Bjorn Magne Sundal, Erlend Bolle, Koki Yoshioka
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Patent number: D686519Type: GrantFiled: January 23, 2012Date of Patent: July 23, 2013Assignee: Corentium ASInventors: Erlend Bolle, Bjørn Magne Sundal, Koki Yoshioka