Patents by Inventor David Carnahan

David Carnahan 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: 20240045101
    Abstract: An electronic device may include components that emit and detect infrared light. For example, a head-mounted device may have optical modules that present images to a user's left and right eyes. Each optical module may have an infrared light-emitting diode that emits infrared light that illuminates an eye box at an infrared wavelength, and an infrared camera that captures an image from the eye box at the infrared wavelength. A low-reflectance coating may be applied to one or more electronic device housing walls to prevent interference with the infrared components or with the visibility for a user. In particular, the low-reflectance coating may be a low-visible-reflectance-and-low-infrared-reflectance coating that exhibits low-reflectance across both visible and infrared wavelengths. The low-reflectance coating may be formed from carbon nanotubes and at least one organic solvent with zero polarity to ensure a low volatile organic component in the coating.
    Type: Application
    Filed: May 17, 2022
    Publication date: February 8, 2024
    Inventors: Peter J Guest, Ivan S Maric, Cole Snider, Ming Kun Shi, David Carnahan, Thomas T Morgan
  • Patent number: 10600027
    Abstract: A method for performing a calculation operation to grade and catalog the repeatability of an author's technical or instructional publication or some sub-portion thereof, comprising: a first step of collecting data from a user or users with experience in said publication's replication; a second step of converting the elements of the data to numerical quantities; a third step of calculating a weighting function for that user or users and a weighting function for the author; a fourth step of multiplying elements or subsets of the data by a weighting function that may amplify or diminish the value of the data; a fifth step of aggregating the weighted subsets of data into one or more values; and a sixth step of weighting and averaging the data with historical data, if any.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 24, 2020
    Assignee: OJER, LLC
    Inventors: Nolan Nicholas, David Carnahan, Thomas T. Morgan, Daniel Esposito
  • Patent number: 9708712
    Abstract: A method for the production of a transparent conductor deposit on a substrate, the method comprising: providing a substrate formed from a first material; depositing a film of a second material on the substrate; causing the film to crack so as to provide a plurality of recesses; depositing a conductive material in the recesses; and removing the film from the substrate so as to yield a transparent conductive deposit on the substrate.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: July 18, 2017
    Inventors: David Carnahan, Krzysztof Kempa, Nolan Nicholas
  • Patent number: 9505621
    Abstract: A method for producing carbon nanotubes having specific lengths, said method comprising: producing carbon nanotubes having at least two types of zones along their lengths, wherein each zone type has a characteristic structure that confers specific properties; and processing said carbon nanotubes to selectively attack one zone type more aggressively than another zone type.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: November 29, 2016
    Assignee: NanoLab, Inc.
    Inventors: Nolan Nicholas, David Carnahan
  • Publication number: 20160171097
    Abstract: A method for performing a calculation operation to grade and catalog the repeatability of an author's technical or instructional publication or some sub-portion thereof, comprising: a first step of collecting data from a user or users with experience in said publication's replication; a second step of converting the elements of the data to numerical quantities; a third step of calculating a weighting function for that user or users and a weighting function for the author; a fourth step of multiplying elements or subsets of the data by a weighting function that may amplify or diminish the value of the data; a fifth step of aggregating the weighted subsets of data into one or more values; and a sixth step of weighting and averaging the data with historical data, if any.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 16, 2016
    Inventors: Nolan Nicholas, David Carnahan, Thomas T. Morgan, Daniel Esposito
  • Publication number: 20150182703
    Abstract: Painless, non-invasive nanofluidic delivery systems useful for the delivery of therapeutically active agents, GRAS agents, sterile fluids and inert fillers through epithelial membranes are described. The painless, non-invasive delivery system delivers a therapeutic agent via a micro-syringe-based assembly. The painless, non-invasive delivery system may also have a vehicle, which facilitates the absorption of the therapeutic agents by altering its absorption rate at the site of administration. Also disclosed is a method and components of the delivery system to administer therapeutic agents in a consistent, predictable and reproducible manner. Certain compositions may facilitate the delivery of different agents without altering the agents from their current or previous form.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 2, 2015
    Inventors: Troy G. Fohrman, David Carnahan, Nolan Nicholas, Howard Busch, Tyler J. Fohrman, Keith Boudreau
  • Publication number: 20150151097
    Abstract: Apparatus for subcutaneously delivering a substance to a patient, said apparatus comprising: a carrier comprising a flexible body, wherein said flexible body comprises a reservoir, and further wherein said reservoir contains the substance which is to be delivered to the patient; a nanoneedle assembly comprising: a tubular body having a distal end and a proximal end; a base plate movably mounted intermediate said distal end and said proximal end of said tubular body, said base plate comprising a distal surface and a proximal surface, with a plurality of through-holes extending between said distal surface and said proximal surface of said base plate, said proximal surface of said base plate being in fluid communication with said reservoir; a plurality of nanoneedles, wherein each of said plurality of nanoneedles comprises a distal end, a proximal end, and a lumen extending therebetween, said proximal end of each of said plurality of nanoneedles being mounted to said base plate such that said lumen of each o
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: David Carnahan, Nolan Nicholas, Kyle G. Fohrman, Howard Busch, Thomas T. Morgan, Troy G. Fohrman
  • Publication number: 20140326697
    Abstract: A method for the production of a transparent conductor deposit on a substrate, the method comprising: providing a substrate formed from a first material; depositing a film of a second material on the substrate; causing the film to crack so as to provide a plurality of recesses; depositing a conductive material in the recesses; and removing the film from the substrate so as to yield a transparent conductive deposit on the substrate.
    Type: Application
    Filed: May 5, 2014
    Publication date: November 6, 2014
    Applicant: NanoLab, Inc.
    Inventors: David Carnahan, Krzysztof Kempa, Nolan Nicholas
  • Publication number: 20140286852
    Abstract: A method for producing carbon nanotubes having specific lengths, said method comprising: producing carbon nanotubes having at least two types of zones along their lengths, wherein each zone type has a characteristic structure that confers specific properties; and processing said carbon nanotubes to selectively attack one zone type more aggressively than another zone type.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 25, 2014
    Inventors: Nolan Nicholas, David Carnahan
  • Patent number: 8608085
    Abstract: A multi-pole switch comprising a conducting substrate; at least three field electrodes mounted above, and electrically isolated from, each other and from said conducting substrate; a conductive cantilever element having a first end portion secured to said conducting substrate, an opposite second free end portion positioned in spaced relation to said field electrodes and operable in response to an electrostatic or electrodynamic charge established between said cantilever element and said field electrodes to deflect in a direction towards said field electrodes; and a plurality of contact electrode poles mounted above, and electrically isolated from, said conducting substrate below the top of said cantilever element second free end portion and above said field electrodes and positioned to contact said cantilever element as said cantilever element is deflected in a direction defined by the net field applied by said field electrodes.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: December 17, 2013
    Assignee: NanoLab, Inc.
    Inventors: David Carnahan, Iosif Izrailit
  • Publication number: 20120211568
    Abstract: A multi-pole switch comprising a conducting substrate; at least three field electrodes mounted above, and electrically isolated from, each other and from said conducting substrate; a conductive cantilever element having a first end portion secured to said conducting substrate, an opposite second free end portion positioned in spaced relation to said field electrodes and operable in response to an electrostatic or electrodynamic charge established between said cantilever element and said field electrodes to deflect in a direction towards said field electrodes; and a plurality of contact electrode poles mounted above, and electrically isolated from, said conducting substrate below the top of said cantilever element second free end portion and above said field electrodes and positioned to contact said cantilever element as said cantilever element is deflected in a direction defined by the net field applied by said field electrodes.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 23, 2012
    Inventors: David Carnahan, Iosif Izrailit
  • Patent number: 7682478
    Abstract: A vacuum infusion laminate adhesive that holds the laminate layers together as the catalyzed resin is sucked into a laminate structure. The adhesive includes properties that cross-link with polyester present in the laminate structure as it cures. Generally, the laminate layers include the assembly of polyester or vinyl ester resins that are reinforced with fiberglass.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: March 23, 2010
    Assignee: Westech Aerosol Corp.
    Inventors: Jim Manlove, David Carnahan
  • Publication number: 20070231908
    Abstract: A nanostructured molecular delivery vehicle comprising magnetic materials and configured to receive passenger biomolecules. The application of a an appropriate magnetic field having a gradient orients and drives the vehicle into a biological target, which may comprise cells, cell masses, tissue slices, tissues, etc. Under the control of the magnetic field, these vehicles can penetrate cell membranes. Then, the biomolecules carried by the vehicle can be released into the cells to perform their functions. Using this “nanospearing” technique, unprecendented high transfection efficiency has been achieved in several difficult-to-transfect cells. These include, but are not limited to, Bal 17 cells, ex vivo B cells, primary cultured cortical neurons, etc. This method advances the state of the art, providing an improved technique for the introduction of exogenous molecules to cells, with the clinical applications including, but not being limited to, drug delivery, gene therapy, vaccination, etc.
    Type: Application
    Filed: September 22, 2005
    Publication date: October 4, 2007
    Inventors: Dong Cai, David Carnahan
  • Patent number: 4825948
    Abstract: Method and apparatus for varying from a remote location the bore of shoes within a ram-type blow out preventer to sealingly engage pipe of varying diameters. A plurality of shoe pairs is provided, each pair defining a cylindrical surface having a different bore for engagement about pipe of corresponding diameter. Each shoe has pipe faces and a curved packer surface forming a semicircular half-cylinder portion of the cylindrical surface and is releasably and interchangeably interconnectable by a lock pin to either of a pair of rams in the preventer. Method and apparatus are further provided for effecting from a remote location removal of a first shoe pair from the preventer rams and transfer thereof to the location, as well as transfer of a second shoe pair from the location to the preventer and installation therein, thereby remotely varying the shoe bore in the preventer as desired.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: May 2, 1989
    Inventor: David A. Carnahan
  • Patent number: 4133342
    Abstract: This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill head, for example on the sea bed. The method comprises removing a seal from a first blow out preventer ram in situ at the lower end of the well riser, and inserting a replacement shoe of smaller internal diameter itself fitted with a seal within the seal recess of the first ram.There is disclosed a shoe for a ram type blow out preventer comprising a part annular member having a part cylindrical outer surface provided with a ridge for receipt in a recess in a blow out preventer ram, means for indexing and securing the part annular member relative to the blow out preventer ram, and a seal receiving recess in the radially inner surface of the part annular member.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: January 9, 1979
    Inventor: David A. Carnahan
  • Patent number: 4003430
    Abstract: This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill head, for example on the sea bed. The method comprises removing a seal from a first blow out preventer ram in situ at the lower end of the well riser, and inserting a replacement shoe of smaller internal diameter itself fitted with a seal within the seal recess of the first ram.There is disclosed a shoe for a ram type blow out preventer comprising a part annular member having a part cylindrical outer surface provided with a ridge for receipt in a recess in a blow out preventer ram, means for indexing and securing the part annular member relative to the blow out preventer ram, and a seal receiving recess in the radially inner surface of the part annular member.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: January 18, 1977
    Inventor: David A. Carnahan