Patents by Inventor Charles L. Coffman

Charles L. Coffman 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).

  • Devices, Methods, and User Interfaces for Controlling Operation of Wireless Electronic Accessories
    Publication number: 20240078079
    Abstract: A wearable audio output device includes a first portion configured to be inserted in a user's ear and a second portion that extends from the first portion and includes one or more input devices. The wearable audio output device detects an input via the one or more input devices. In response to detecting the input, and in accordance with a determination that the input is a swipe gesture along the second portion of the wearable audio output device, the wearable audio output device adjusts an output volume for the wearable audio output device based on movement of the swipe gesture along the second portion of the wearable audio output device.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Inventors: Taylor G. Carrigan, Hugo D. Verweij, Mitchell R. Lerner, Charles C. Hoyt, Pavel Pivonka, Vincenzo O. Guiliani, Patrick L. Coffman
  • Process for recovering crude oil from an underground reservoir
    Patent number: 4029570
    Abstract: An emulsion of crude oil and water that is recovered from an underground reservoir is broken by the addition of a naturally occurring brine to effect separation and recovery of the oil phase of the emulsion. Advantageously, brine taken from the same geologic formation as the crude oil can be used as the emulsion breaker.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: June 14, 1977
    Assignee: Cities Service Company
    Inventors: Charles L. Coffman, Glen F. Kellerhals, Jack Newcombe, Shirley H. Roth