Patents by Inventor Hiroko Ohtani

Hiroko Ohtani 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: 11597273
    Abstract: An automotive axle includes a housing including gears and a bath lubricating the gears, the bath including gear oil and about 0.1 to 5 wt. % secondary alcohol ethoxylate based on total weight of the bath such that during automotive operation at temperatures less than a threshold, reverse micelles form to trap air bubbles in the bath, emulsifying the bath, and at temperatures greater than the threshold, the reverse micelles dissipate.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: March 7, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Hiroko Ohtani, Kevin Richard John Ellwood, David Karl Bidner, Arup Kumar Gangopadhyay, Mathew John Fast, Phillip Bonkoski
  • Patent number: 11369946
    Abstract: Methods for desorbing volatile organic compounds (VOCs) from beaded activated carbon (BAC) that is loaded with VOCs, during the VOC abatement process using the fluidized carbon bead system include transferring the loaded BAC in an adsorber to a desorber, where a stream of organic solvent passes over the BAC to dissolve at least a portion of the adsorbed VOCs into the organic solvent to regenerate BAC. The regenerated BAC is returned to the adsorber. The organic solvent containing dissolved VOCs may be transferred to a distiller to separate the organic solvents from the dissolved VOCs and may be reused as the organic solvent in the desorber.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: June 28, 2022
    Assignees: Ford Global Technologies, LLC, The Regents of the University of Michigan
    Inventors: Hiroko Ohtani, Kevin Richard John Ellwood, Maithri Venkat, Adarsh Bhat, Johannes Schwank
  • Publication number: 20200215905
    Abstract: An automotive axle includes a housing including gears and a bath lubricating the gears, the bath including gear oil and about 0.1 to 5 wt. % secondary alcohol ethoxylate based on total weight of the bath such that during automotive operation at temperatures less than a threshold, reverse micelles form to trap air bubbles in the bath, emulsifying the bath, and at temperatures greater than the threshold, the reverse micelles dissipate.
    Type: Application
    Filed: January 8, 2019
    Publication date: July 9, 2020
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Hiroko OHTANI, Kevin Richard John ELLWOOD, David Karl BIDNER, Arup Kumar GANGOPADHYAY, Mathew John FAST, Phillip BONKOSKI
  • Publication number: 20200086298
    Abstract: Methods for desorbing volatile organic compounds (VOCs) from beaded activated carbon (BAC) that is loaded with VOCs, during the VOC abatement process using the fluidized carbon bead system include transferring the loaded BAC in an adsorber to a desorber, where a stream of organic solvent passes over the BAC to dissolve at least a portion of the adsorbed VOCs into the organic solvent to regenerate BAC. The regenerated BAC is returned to the adsorber. The organic solvent containing dissolved VOCs may be transferred to a distiller to separate the organic solvents from the dissolved VOCs and may be reused as the organic solvent in the desorber.
    Type: Application
    Filed: September 13, 2019
    Publication date: March 19, 2020
    Applicants: Ford Global Technologies, LLC, The Regents of the University of Michigan
    Inventors: Hiroko Ohtani, Kevin Richard John Ellwood, Maithri Venkat, Adarsh Bhat, Johannes Schwank
  • Patent number: 5441656
    Abstract: An effective way is described for overcoming the shudder problem associated with continuous slip torque converter clutches for use in automatic transmissions, especially shudder which occurs with new friction materials before break-in. To do this, an ATF is used in which the friction modifier system consists essentially of (i) an N-aliphatic hydrocarbyl-substituted diethanolamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of 14 to 20 carbon atoms, and (ii) an N-aliphatic hydrocarbyl-substituted trimethylenediamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of about 14 to about 20 carbon atoms. The ATF is devoid of any tertiary amine friction modifier component and any C.sub.12-36 aliphatic hydrocarbyl succinimide or succinamide friction modifier.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: August 15, 1995
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Hiroko Ohtani, Rolfe J. Hartley
  • Patent number: 5372735
    Abstract: An effective way is described for overcoming the shudder problem associated with continuous slip torque converter clutches for use in automatic transmissions, especially shudder which occurs with new friction materials before break-in. To do this, an ATF is used in which the friction modifier system consists essentially of (i) an N-aliphatic hydrocarbyl-substituted diethanolamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of 14 to 20 carbon atoms, and (ii) an N-aliphatic hydrocarbyl-substituted trimethylenediamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of about 14 to about 20 carbon atoms. The ATF is devoid of any tertiary amine friction modifier component and any C.sub.12-36 aliphatic hydrocarbyl succinimide or succinamide friction modifier.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: December 13, 1994
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Hiroko Ohtani, Rolfe J. Hartley
  • Patent number: 5344579
    Abstract: A new friction modifier system is described. It has the capability of establishing and maintaining a substantially constant static breakaway coefficient of friction between a pair of friction surfaces that are periodically frictionally engaged with each other. Also this system is capable of maintaining a substantially constant ratio between (i) the low speed dynamic coefficient of friction of such friction surfaces, and (ii) the (midpoint) dynamic coefficient of friction of such friction surfaces.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: September 6, 1994
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Hiroko Ohtani, Rolfe J. Hartley
  • Patent number: 4539506
    Abstract: In a red-emitting phosphor which includes ZnSe as a host material, copper (Cu) as an activator and aluminum (Al) as a coactivator, the improvement comprising the inclusion of a small amount of cobalt (Co) to provide superlinear characteristics to said phosphor in combination with said Cu and Al. A preferred range of concentration of said Co is 10.sup.-6 -2.times.10.sup.-5 g atom/mol. A specific application of said red-emitting superlinear phosphor is as a phosphor screen for a current density sensitive, single gun color CRT, when mixed with a green-emitting sublinear phosphor.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: September 3, 1985
    Assignee: International Business Machines Corporation
    Inventors: Hiroko Ohtani, Kazuharu Toyokawa