Patents by Inventor Darrell Waite

Darrell Waite 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).

  • System and method for conditioning a hardwood pulp liquid hydrolysate
    Patent number: 9068291
    Abstract: A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: June 30, 2015
    Assignees: Red Shield Acquisition, LLC, University of Maine System Board of Trustees
    Inventors: Darrell Waite, Richard Arnold, James St. Pierre, Hemant P. Pendse, William H. Ceckler
  • System and Method for Conditioning a Hardwood Pulp Liquid Hydrolysate
    Publication number: 20140060520
    Abstract: A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 6, 2014
    Applicants: University of Maine System Board of Trustees, Red Shield Acquisition, LLC
    Inventors: Darrell Waite, Richard Arnold, James St. Pierre, Hemant P. Pendse, William H. Ceckler