Patents by Inventor John Calhoon
John Calhoon 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: 20260212773Abstract: A method and system for assessing surgical skills using video-tracking and efference Fast Fourier Transform (FFT) analysis of instrument movements. Sequential x,y-coordinate data from video capture is divided into geometric parcels, weighted, and merged with expected values to produce a frequency domain spectrum. Regression analysis yields R2 and y-intercept values compared to ideals for real-time feedback on surgical proficiency. Applicable to laparoscopic training, tremor quantification, and incision closure, the system provides quantitative, objective assessment for skill acquisition and safety evaluation in surgical programs.Type: ApplicationFiled: January 19, 2026Publication date: July 23, 2026Inventors: Daniel DeArmond, John Calhoon
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Publication number: 20250375572Abstract: Embodiments are directed to an automated system that provides statistical confirmation of the non-infiltrated state of a functioning PIV and a clear signal associated with an infiltrated PIV identifying conditions associated with infiltration/extravasation before rather than after the onset of a noxious event such as tissue edema or damage.Type: ApplicationFiled: May 19, 2025Publication date: December 11, 2025Inventors: Daniel Dearmond, John Calhoon
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Publication number: 20070128477Abstract: A fuel cell or fuel cell stack heater using resistive heat. A resistive conductor (preferably some type of metal wire) is attached to a source of electricity such as a battery. The resistive conductor is in proximity with the fuel cell or stack so that when the resistive conductor is heated, the cell or stack will also become hot. An insulating material surrounds the outside of the fuel cell or stack, so that it encloses the cell or stack and the resistive conductor. The insulating material will capture heat from the resistive conductor and any waste heat given off by the operation of the fuel cell or stack. A means for modifying the amount of electrical current in the resistive conductor is attached to the apparatus. When the fuel cell or stack reaches the desired temperature, the means is employed to reduce or turn off current in the resistive conductor.Type: ApplicationFiled: February 8, 2007Publication date: June 7, 2007Applicant: Microsoft CorporationInventor: John Calhoon
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Publication number: 20070019958Abstract: Described herein are technologies directed towards IR-to-network conversion. With the described technology, a system may convert an infrared (IR) control signal from an IR remote controller into a network-transmittable message package and transmit that package via a communications network, such as the Internet (or a network compatible therewith). The IR control signal is destined for a to-be-controlled audio/visual (AV) device. The transmitted network message packet is received at the location of the to-be-controlled AV device and converted back into its original IR control signal. The signal is transmitted to the AV device; thereby effecting control of that device.Type: ApplicationFiled: July 21, 2005Publication date: January 25, 2007Applicant: Microsoft CorporationInventor: John Calhoon
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Publication number: 20060177711Abstract: A fuel cell pack having a fuel tank, a smart controller, and a fuel cell provides electrical power and operational data pertaining to the fuel cell pack to a host processor. The fuel cell pack and the host processor control the operation of the fuel cell. Control of the fuel cell includes starting and shutting down the fuel cell, and metering the amount of fuel provided to the fuel cell. Operational data is provided to the fuel cell via an I2C bus formatted in compliance with industry standard specifications such as the Smart Battery Specification and the Advanced Configuration and Power Interface (ACPI) Specification.Type: ApplicationFiled: April 6, 2006Publication date: August 10, 2006Applicant: Microsoft CorporationInventor: John Calhoon
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Publication number: 20060127721Abstract: A fuel cell pack having a fuel tank, a smart controller, and a fuel cell provides electrical power and operational data pertaining to the fuel cell pack to a host processor. The fuel cell pack and the host processor control the operation of the fuel cell. Control of the fuel cell includes starting and shutting down the fuel cell, and metering the amount of fuel provided to the fuel cell. Operational data is provided to the fuel cell via an I2C bus formatted in compliance with industry standard specifications such as the Smart Battery Specification and the Advanced Configuration and Power Interface (ACPI) Specification.Type: ApplicationFiled: February 3, 2006Publication date: June 15, 2006Applicant: Microsoft CorporationInventor: John Calhoon
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Publication number: 20050127868Abstract: An inductive charging system transfers energy by inductively coupling a source coil on a power source to a receiver coil for a battery charger. Source current may be received in the battery charger and converted for charging a battery pack. A wireless communication arrangement may also provide for authentication of devices that are allowed by the source to be powered or otherwise charged.Type: ApplicationFiled: December 12, 2003Publication date: June 16, 2005Applicant: Microsoft CorporationInventors: John Calhoon, Leroy Keely, William Mitchell
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Publication number: 20050127867Abstract: An inductive charging systems transfers energy by inductively coupling a source coil on a charging source to a receiver coil on a charging portion of a battery pack. The source current is received in the battery pack and converted to direct current for storage in the battery pack cells. Communication between a charging source and the charging portion is provided. A wireless communication arrangement provides for authentication of devices that are allowed by a source to be charged.Type: ApplicationFiled: December 12, 2003Publication date: June 16, 2005Applicant: Microsoft CorporationInventors: John Calhoon, Leroy Keely, William Mitchell
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Publication number: 20050127869Abstract: An inductive power systems transfers energy by inductively coupling a source coil on a power source to a receiver coil on a power portion of a power adapter. The source current is received in the power adapter and converted to direct current for transmission to a computer system. Wireless communication between a power source and the power adapter is provided. A wireless communication arrangement provides for authentication of devices that are allowed by a source to be powered.Type: ApplicationFiled: December 12, 2003Publication date: June 16, 2005Applicant: Microsoft CorporationInventors: John Calhoon, Leroy Keely, William Mitchell
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Publication number: 20050123814Abstract: A fuel cell or fuel cell stack heater using resistive heat. A resistive conductor (preferably some type of metal wire) is attached to a source of electricity such as a battery. The resistive conductor is in proximity with the fuel cell or stack so that when the resistive conductor is heated, the cell or stack will also become hot. An insulating material surrounds the outside of the fuel cell or stack, so that it encloses the cell or stack and the resistive conductor. The insulating material will capture heat from the resistive conductor and any waste heat given off by the operation of the fuel cell or stack. A means for modifying the amount of electrical current in the resistive conductor is attached to the apparatus. When the fuel cell or stack reaches the desired temperature, the means is employed to reduce or turn off current in the resistive conductor.Type: ApplicationFiled: December 5, 2003Publication date: June 9, 2005Inventor: John Calhoon