Patents by Inventor James Simpkins

James Simpkins 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: 20240085240
    Abstract: A photon detection system comprising an avalanche photodiode configured to generate a photodiode signal in response to an incident photon. The photon detection system also comprises a biasing circuit configured to supply a gating signal to the avalanche photodiode. The gating signal is a periodic signal configured to reverse bias the avalanche photodiode above and below its breakdown voltage for photon detection during each period. The photon detection system further comprises a non-reflective filter circuit configured to receive, at an input port, the photodiode signal, and provide, at a first output port, a first filtered output signal by applying a low-pass filter with a first cut-off frequency to the received photodiode signal.
    Type: Application
    Filed: February 28, 2023
    Publication date: March 14, 2024
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mirko SANZARO, Christopher MEAYERS, James F. DYNES, Andrew SIMPKINS, Andrew James SHIELDS
  • Patent number: 7572781
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: August 11, 2009
    Assignees: University of Florida, University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Publication number: 20090156637
    Abstract: The present invention includes compositions and methods for the protection of one or more central nervous system cells from trauma, when administered before, during or after the trauma, wherein the composition includes an effective amount of a butyrophenone, e.g., a 1-linked phenyl butyrophenone that is electronegative along the butyl chain and/or a Sigma-1 receptor antagonist.
    Type: Application
    Filed: February 23, 2009
    Publication date: June 18, 2009
    Applicant: University of North Texas Health Science Center of Fort Worth
    Inventors: John A. Schetz, James Simpkins, Jeffery Talbert
  • Patent number: 7300926
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as drugs for estrogen replacement therapy. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues, bone, in the cardiovascular system, and in the CNS (central nervous system) with only a slight estrogenic action or no estrogenic action in the uterus. The compounds are suitable for the production of pharmaceutical agents for use in numerous indications (for example, estrogen replacement therapy, prevention and treatment of osteoporosis).
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: November 27, 2007
    Assignees: University of Florida Research Foundation, Inc., University of North Texas Health Science Center at Fort Worth
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Publication number: 20070155711
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcomeal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocomeal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Application
    Filed: February 15, 2007
    Publication date: July 5, 2007
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Publication number: 20070129611
    Abstract: The present invention provides a system, method and apparatus for assessing a person's menopausal or post-hysterectomy symptoms by providing a first set and a second set of questions to the person, receiving answers to the first set and second set of questions and assessing the person's symptoms based on the received answers. The first set of questions includes four or more questions directed to one or more physical conditions. The second set of questions includes two or more questions directed to one or more medical conditions. The physical conditions may include a duration of the symptoms, a frequency of the symptoms, an episode duration of the symptoms, an intensity of the symptoms, a bothersomeness of the symptoms and an onset age of the symptoms. The medical conditions may include a hysterectomy, a hormone therapy, a non-hormonal therapy and a contraception type.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 7, 2007
    Applicant: University of North Texas Health Science Center at Fort Worth
    Inventors: Anna Ratka, James Simpkins
  • Patent number: 7186707
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: March 6, 2007
    Assignees: University of Florida, University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Publication number: 20060106064
    Abstract: The present invention includes compositions and methods for the protection of one or more central nervous system cells from trauma, when administered before, during or after the trauma, wherein the composition includes an effective amount of a butyrophenone, e.g., a 1-linked phenyl butyrophenone that is electronegative along the butyl chain and/or a Sigma-1 receptor antagonist.
    Type: Application
    Filed: November 3, 2005
    Publication date: May 18, 2006
    Applicant: University of North Texas Health Science Center at Fort Worth
    Inventors: John Schetz, James Simpkins, Jeffery Talbert
  • Patent number: 7026306
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as prodrugs for phenolic estrogens and estrogen analogs. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues and penetration across the blood-brain barrier when compared to phenolic estrogens and estrogen analogs.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: April 11, 2006
    Assignees: University of Florida Research Foundation, Inc., University of North Texas Health Science Center
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Publication number: 20040171596
    Abstract: The subject invention provides a mechanism by which steroidal quinol compounds confer beneficial ophthalmic effects. The subject compounds possess a lipophilic-hydrophilic balance for transcorneal penetration and are readily reduced into parent phenolic A-ring steroid compounds to provide protection or treatment against various ocular symptoms and disorders. The compounds according to the subject invention appear to be highly advantageous as prodrugs to provide protection and/or treatment against ocular disorders. These prodrugs confer lipid solubility optimal for transocorneal penetration and are readily converted to endogenous reducing agents into active phenolic A-ring steroid compounds. To the extent that these prodrugs have reduced feminizing effects and systemic toxicity, they would be expected to be quite advantageous for protecting or treating the eye against ocular disorders such as cataract or glaucoma without undesired (systemic) side effects).
    Type: Application
    Filed: December 9, 2003
    Publication date: September 2, 2004
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins, Neeraj Agarwal
  • Patent number: 6764390
    Abstract: An improved vane for use with a centrifugal throwing apparatus. The vane has a convex leading surface and flared edges to provide a consistent, broad blast pattern and improved vane wear characteristics. In one embodiment, the vane includes a pickup end, a discharge end opposed to the pickup end, and a leading surface connecting the pickup end to the discharge end. A portion of the leading surface is convex in cross section. Two opposed longitudinal edges define the leading surface, with at least one of the edges being outwardly flared. In an alternative embodiment, the vane includes a longitudinal raised rail formed near one edge of the leading surface, the rail being outwardly flared.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: July 20, 2004
    Assignee: International Surface Preparation Group, Inc.
    Inventors: Katherine Holloway, Dan Stoutamire, James Simpkin
  • Publication number: 20040138190
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as drugs for estrogen replacement therapy. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues, bone, in the cardiovascular system, and in the CNS (central nervous system) with only a slight estrogenic action or no estrogenic action in the uterus. The compounds are suitable for the production of pharmaceutical agents for use in numerous indications (for example, estrogen replacement therapy, prevention and treatment of osteoporosis).
    Type: Application
    Filed: September 17, 2003
    Publication date: July 15, 2004
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Publication number: 20030229060
    Abstract: The present invention relates to novel estrogen-related steroidal quinols and their use as prodrugs for phenolic estrogens and estrogen analogs. The quinols of the present invention provide improved physicochemical properties, increased bioavailability, and improved distribution into tissues and penetration across the blood-brain barrier when compared to phenolic estrogens and estrogen analogs.
    Type: Application
    Filed: April 1, 2003
    Publication date: December 11, 2003
    Inventors: Laszlo Prokai, Katalin Prokai, James Simpkins
  • Publication number: 20030100249
    Abstract: An improved vane for use with a centrifugal throwing apparatus. The vane has a convex leading surface and flared edges to provide a consistent, broad blast pattern and improved vane wear characteristics. In one embodiment, the vane includes a pickup end, a discharge end opposed to the pickup end, and a leading surface connecting the pickup end to the discharge end. A portion of the leading surface is convex in cross section. Two opposed longitudinal edges define the leading surface, with at least one of the edges being outwardly flared. In an alternative embodiment, the vane includes a longitudinal raised rail formed near one edge of the leading surface, the rail being outwardly flared.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 29, 2003
    Inventors: Katherine Holloway, Dan Stoutamire, James Simpkin