Patents by Inventor Charles Keyes

Charles Keyes 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: 20250114994
    Abstract: A high strength and biodegradable polymer film comprising a blend of a polylactic acid (PLA) copolymer, a flexible polymer linker, and optionally a compostable polyester segment is disclosed. Upon biaxially stretching, the disclosed polymer film exhibits unexpectedly high tensile strengths and high impact strengths while providing high flexibility as measured according to various standards such as ASTM D882, D3420, and D1709. The disclosed films are formulated to meet common industrial composting standards as defined by ASTM D6400, EN 13432, and ISO 17088, as well as exhibit accelerated biodegradation rates at lower temperatures for home composting applications.
    Type: Application
    Filed: October 4, 2024
    Publication date: April 10, 2025
    Inventors: Anthony Charles Keyes, Shilpa Durgesh Manjure, Alexander Ryan Ermlich, Nagaraj Kuppusamy
  • Publication number: 20070053801
    Abstract: An apparatus is provided to generate a gas by mixing chemicals with water. Typically, the production of gas, particularly oxygen, by combining water with powders and other dry chemicals has not been widely employed. There have existed a number of preexisting barriers such as undesirable flow rates and yields. However, by utilizing multiple reaction chambers the flow rates and yields can be more precisely tailored for a variety of situations that may call for particular flow rates and yields. Additionally, the use of the dry chemicals would allow for a long self-life allowing the apparatus to be particularly useful in emergency situations.
    Type: Application
    Filed: June 22, 2005
    Publication date: March 8, 2007
    Inventors: Julian Ross, Charles Keyes
  • Publication number: 20060292061
    Abstract: An apparatus is provided to generate a gas by mixing chemicals with water. Typically, the production of gas, particularly oxygen, by combining water with powders and other dry chemicals has not been widely employed. There have existed a number of preexisting barriers such as undesirable flow rates and yields. However, by utilizing multiple reaction chambers the flow rates and yields can be more precisely tailored for a variety of situations that may call for particular flow rates and yields. Additionally, the use of the dry chemicals would allow for a long self-life allowing the apparatus to be particularly useful in emergency situations.
    Type: Application
    Filed: June 22, 2005
    Publication date: December 28, 2006
    Inventors: Julian Ross, Charles Keyes
  • Publication number: 20060171863
    Abstract: An apparatus is provided to generate a gas by mixing chemicals with water. Typically, the production of gas, particularly oxygen, by combining water with powders and other dry chemicals has not been widely employed. There have existed a number of preexisting barriers such as undesirable flow rates and yields. However, by utilizing multiple reaction chambers the flow rates and yields can be more precisely tailored for a variety of situations that may call for particular flow rates and yields. Additionally, the use of the dry chemicals would allow for a long self-life allowing the apparatus to be particularly useful in emergency situations.
    Type: Application
    Filed: June 22, 2005
    Publication date: August 3, 2006
    Inventors: Julian Ross, Charles Keyes
  • Patent number: 6097496
    Abstract: An imaging subsystem for a printer is configured to support multiple printer personalities. The imaging subsystem has an integrated display list that is accessed and used by all of the printer personalities. The printer implements a display list builder tool that assists each personality in posting its objects to the display list.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: August 1, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Jeff H. Papke, Russell Campbell, Charles Keyes