Patents by Inventor David P. Brown

David P. Brown 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).

  • Publication number: 20150022224
    Abstract: A touch sensor having a touch sensitive film, a signal filter, electrical circuitry and a processing unit. The film is capable of capacitive or inductive coupling to an external object when a touch is made by the object. The signal filter is formed by the resistance of the film and the capacitive or inductive coupling to the external object, and the filter has properties affected by location of the touch and/or capacitance or inductance of the touch. The electrical circuitry is coupled to the touch sensitive film and configured to supply excitation, amplitude and wave form into the signal filter and to receive response signals from the signal filter. The processing unit is configured to detect the presence or proximity of a touch, the location of said touch, the capacitance and/or inductance of said touch by processing response signals and thereby measuring changes in the properties of the signal filter.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 22, 2015
    Inventors: Matti Hannu Ruusunen, Jan Von Pfaler, Bjorn Friour Mikladal, Bradley J. Aitchison, David P. Brown
  • Publication number: 20140348721
    Abstract: The present invention relates to single walled and multi-walled carbon nanotubes (CNTs), functionalized CNTs and carbon nanotube composites with controlled properties, to a method for aerosol synthesis of single walled and multi-walled carbon nanotubes, functionalized CNTs and carbon nanotube composites with controlled properties from pre-made catalyst particles and a carbon source in the presence of reagents and additives, to functional, matrix and composite materials composed thereof and structures and devices fabricated from the same in continuous or batch CNT reactors. The present invention allows all or part of the processes of synthesis of CNTs, their purification, doping, functionalization, coating, mixing and deposition to be combined in one continuous procedure and in which the catalyst synthesis, the CNT synthesis, and their functionalization, doping, coating, mixing and deposition can be separately controlled.
    Type: Application
    Filed: June 30, 2014
    Publication date: November 27, 2014
    Inventors: Esko KAUPPINEN, David P. BROWN, Albert G. NASIBULIN, Hua JIANG, Anna MOISALA
  • Patent number: 8871295
    Abstract: A method for moving high aspect ratio molecular structures (HARMS), which method comprises applying a force upon a dispersion comprising one or more bundled and individual HARM-structures, wherein the force moves the bundled and/or the individual HARM-structure based on one or more physical features and/or properties for substantially separating the bundled and individual HARM-structures from each other.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: October 28, 2014
    Assignee: Canatu Oy
    Inventors: David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen, David Gonzalez
  • Patent number: 8845995
    Abstract: The present invention relates to single walled and multi-walled carbon nanotubes (CNTs), functionalized CNTs and carbon nanotube composites with controlled properties, to a method for aerosol synthesis of single walled and multi-walled carbon nanotubes, functionalized CNTs and carbon nanotube composites with controlled properties from pre-made catalyst particles and a carbon source in the presence of reagents and additives, to functional, matrix and composite materials composed thereof and structures and devices fabricated from the same in continuous or batch CNT reactors. The present invention allows all or part of the processes of synthesis of CNTs, their purification, doping, functionalization, coating, mixing and deposition to be combined in one continuous procedure and in which the catalyst synthesis, the CNT synthesis, and their functionalization, doping, coating, mixing and deposition can be separately controlled.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: September 30, 2014
    Assignee: Canatu Oy
    Inventors: Esko Kauppinen, David P. Brown, Albert G. Nasibulin, Hua Jiang, Anna Moisala
  • Publication number: 20140225855
    Abstract: A touch sensitive film (1) includes a conductive layer (2) having a touch sensing region (3), and a user input surface (4). The user input surface of the touch sensitive film includes a tactilely distinguishable surface feature (5) deviating from the general nature of the user input surface (4) for identifying the location of the touch sensing region (3) by sensing the tactilely distinguishable surface feature.
    Type: Application
    Filed: October 1, 2012
    Publication date: August 14, 2014
    Inventors: Bradley J. Aitchison, David P. Brown, Bjorn Friour Mikladal
  • Patent number: 8518726
    Abstract: A carbon nanobud molecule (3, 9, 18, 23, 29, 36) having at least one fullerene part covalently bonded to the side of a tubular carbon molecule is used to interact with electromagnetic radiation in a device, wherein the interaction with electromagnetic radiation occurs through relaxation and/or excitation of the carbon nanobud molecule.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 27, 2013
    Assignee: Canatu Oy
    Inventors: David P. Brown, Bradley J. Aitchison
  • Publication number: 20130050113
    Abstract: The invention relates to a method for the production of an at least partially electrically conductive or semi-conductive element on a structure, wherein the element comprises one or more layers, the method comprising the steps of a) forming a formable element comprising one or more layers, wherein at least one layer comprises a network of high aspect ratio molecular structures (HARM-structures), wherein the HARM-structures are electrically conductive or semi-conductive, and b) arranging the formable element in a conformal manner onto a structure by pressing and/or vacuum sealing the formable element on a three-dimensional surface of the structure, for producing a conformal and at least partially electrically conductive or semi-conductive element comprising one or more layers, wherein at least one layer comprises a network of HARM-structures, on the three dimensional surface of the structure. Further, the invention relates to a conformal element and uses thereof.
    Type: Application
    Filed: March 7, 2011
    Publication date: February 28, 2013
    Applicant: CANATU OY
    Inventor: David P. Brown
  • Patent number: 8349295
    Abstract: A method and apparatus for multicomponent surface modified aerosol particle production suitable for, for instance, therapeutic, cosmetic or diagnostic use in which an aerosol containing an active agent is introduced in an aerosol reactor together with a surface agent or surface agent source and/or precursor and wherein the surface agent and/or surface agent precursor is volatilizable. The surface agent vapor saturation ratio is elevated so to cause it to nucleate from the gas phase. Reactor conditions are maintaining such that the active agent remains in the condensed phase and provides a surface for the surface agent to deposit on the active agent containing aerosol particle thus producing surface modified aerosol particles. The method can be used for batch or continuous production. Particles made according to the method and powders and dispersions containing the particles are also described.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: January 8, 2013
    Assignee: Teicos Pharma Oy
    Inventors: David P. Brown, Esko I. Kauppinen, Anna Lahde, Janne Raula
  • Publication number: 20120327004
    Abstract: A capacitive touch sensitive film comprises a conductive layer having a sensing region. According to the present invention, the sheet resistance of the conductive layer in the sensing region is higher than or equal to 3 k?.
    Type: Application
    Filed: March 7, 2011
    Publication date: December 27, 2012
    Applicant: CANATU OY
    Inventors: Bjorn Friour Mikladal, David P. Brown, Bradley J. Aitchison
  • Publication number: 20120235951
    Abstract: A touch screen (13) on a display device (1), and a method for manufacturing a touch screen (13) on a display device (1). The display device (1)has an upper substrate (12) for protecting the display device (1) from the environment, the touch screen (13) comprising an electrically conductive transparent first layer (16). The first layer (16) comprises a network of electrically conductive high aspect ratio molecular structures (HARM-structures), the first layer (16) being embedded into the upper substrate (12) of the display device (1)to protect the conductive transparent first layer (16), for reducing the optical thickness of the structure between a viewer and the region of the display device (1) in which the image is formed.
    Type: Application
    Filed: September 2, 2010
    Publication date: September 20, 2012
    Applicant: Canatu Oy
    Inventors: David P. Brown, Bradley J. Aitchison
  • Publication number: 20120021191
    Abstract: A structure comprising high aspect ratio molecular structures (HARM-structures), wherein the structure comprises an essentially planar network (2) of HARM-structures, and a support (3) in contact with the network (2). The support (3) has an opening (5) therein, at the peripheral region (4) of which opening (5) the network (2) is in contact with the support (3), such that the middle part of the network (2) is unsupported by the support (3). The network (2) comprises essentially randomly oriented HARM-structures.
    Type: Application
    Filed: January 27, 2010
    Publication date: January 26, 2012
    Applicant: Canatu Oy
    Inventors: David P. Brown, Bradley J. Aitchison, Albert G. Nasibulin, Esko I. Kauppinen
  • Publication number: 20110223444
    Abstract: A method for fabricating crystalline surface structures (4) on a template (1). The method comprises the steps of providing a template (1) into a reaction environment, wherein one or more elements (3) required for the formation of the crystalline surface structure (4) are contained within the template (1); heating the template (1) inside the reaction environment to increase the mobility of the element (3) within the template (1), and to increase the surface diffusion length of the element (3) on the template-environment interface; and activating the template (1) by altering the conditions within the reaction environment, to make the mobile element (3) slowly migrate towards the template-environment interface and to make the element (3) organize on the surface of the template (1) as a crystalline structure (4).
    Type: Application
    Filed: November 19, 2009
    Publication date: September 15, 2011
    Applicant: CANATU OY
    Inventors: David P. Brown, Jan Von Pfaler
  • Publication number: 20110212308
    Abstract: A method for the production of a fibrous network-substrate component includes the steps of providing a network of fibrous material (1) on a preliminary substrate (2) by filtering high aspect ratio molecular structures (HARM-structures) from gas flow, placing the network of fibrous material (1) on the preliminary substrate (2) in proximity to a secondary substrate (3), applying a force to the network of fibrous material (1) to preferably attract the network of fibrous material (1) from the preliminary substrate (2) to the secondary substrate (3) in order to transfer the network of fibrous material (1) from the preliminary substrate (2) to the secondary substrate (3), and removing the preliminary substrate (2) from the network of fibrous material (1).
    Type: Application
    Filed: June 23, 2009
    Publication date: September 1, 2011
    Applicant: CANATU OY
    Inventors: David P Brown, Andrei Ollikainen, Esko I. Kauppinen, Albert G. Nasibulin, Jussi Heikkonen
  • Publication number: 20110127488
    Abstract: A carbon nanobud molecule (3, 9, 18, 23, 29, 36) having at least one fullerene part covalently bonded to the side of a tubular carbon molecule is used to interact with electromagnetic radiation in a device, wherein the interaction with electromagnetic radiation occurs through relaxation and/or excitation of the carbon nanobud molecule.
    Type: Application
    Filed: June 26, 2009
    Publication date: June 2, 2011
    Applicant: CANATU OY
    Inventors: David P. Brown, Bradley J. Aitchison
  • Publication number: 20100239507
    Abstract: A method and apparatus for multicomponent surface modified aerosol particle production suitable for, for instance, therapeutic, cosmetic or diagnostic use in which an aerosol containing an active agent is introduced in an aerosol reactor together with a surface agent or surface agent source and/or precursor and wherein the surface agent and/or surface agent precursor is volatilizable. The surface agent vapor saturation ratio is elevated so to cause it to nucleate from the gas phase. Reactor conditions are maintaining such that the active agent remains in the condensed phase and provides a surface for the surface agent to deposit on the active agent containing aerosol particle thus producing surface modified aerosol particles. The method can be used for batch or continuous production. Particles made according to the method and powders and dispersions containing the particles are also described.
    Type: Application
    Filed: May 31, 2007
    Publication date: September 23, 2010
    Inventors: David P. Brown, Esko I. Kauppinen, Anna Lahde, Janne Raula
  • Patent number: 7700915
    Abstract: The present invention relates to a method, computer program and device for determining the crystal structure and/or the range of crystal structures of one or more crystalline tubular molecules from a set of calibration-free properties of a diffraction pattern of the one or more crystalline tubular molecules.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: April 20, 2010
    Assignee: Canatu Oy
    Inventors: Hua Jiang, David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen
  • Publication number: 20090304945
    Abstract: A method for depositing high aspect ratio molecular structures (HARMS), which method comprises applying a force upon an aerosol comprising one or more HARM-structures, which force moves one or more HARM-structures based on one or more physical features and/or properties towards one or more predetermined locations for depositing one or more HARM-structures in a pattern by means of an applied force.
    Type: Application
    Filed: March 7, 2007
    Publication date: December 10, 2009
    Applicant: CANATU OY
    Inventors: David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen, David Gonzalez
  • Publication number: 20090280238
    Abstract: A method for moving high aspect ratio molecular structures (HARMS), which method comprises applying a force upon a dispersion comprising one or more bundled and individual HARM-structures, wherein the force moves the bundled and/or the individual HARM-structure based on one or more physical features and/or properties for substantially separating the bundled and individual HARM-structures from each other.
    Type: Application
    Filed: March 7, 2007
    Publication date: November 12, 2009
    Applicant: CANATU OY
    Inventors: David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen, David Gonzales
  • Publication number: 20090226704
    Abstract: The present invention relates to covalently bonded fullerene-functionalized carbon nanotubes (CBFFCNTs), a method and an apparatus for their production and to their end products. CBFFCNTs are carbon nanotubes with one or more fullerenes or fullerene based molecules covalently bonded to the nanotube surface. They are obtained by bringing one or more catalyst particles, carbon sources and reagents together in a reactor.
    Type: Application
    Filed: June 15, 2006
    Publication date: September 10, 2009
    Applicant: CANATU OY
    Inventors: Esko I. Kauppinen, Hua Jiang, David P. Brown, Albert G. Nasibulin
  • Publication number: 20080121802
    Abstract: The present invention relates to a method, computer program and device for determining the crystal structure and/or the range of crystal structures of one or more crystalline tubular molecules from a set of calibration-free properties of a diffraction pattern of the one or more crystalline tubular molecules.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Inventors: Hua Jiang, David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen