Patents by Inventor Kent I. Sondell

Kent I. Sondell 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).

  • Process for maintaining a low sodium chloride content in recycled sodium chemicals of sodium-based pulp manufacturing processes
    Patent number: 4253911
    Abstract: A process is provided for the separation of sodium chloride in the sodium chemicals recovery stage of sodium-based pulp manufacturing processes so as to maintain a low sodium chloride content in the recycled sodium chemicals, comprising the steps of treating an aqueous sodium chloride-containing solution with carbon dioxide gas, thereby forming a saturated sodium bicarbonate solution; precipitating sodium values of the solution as sodium bicarbonate while retaining sodium chloride in solution; separating such sodium bicarbonate; withdrawing the residual aqueous sodium chloride-containing solution from the process; and recycling the separated sodium bicarbonate.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: March 3, 1981
    Assignee: Mo och Domsjo Aktiebolag
    Inventors: Per A. R. Hillstrom, Kent I. Sondell