Patents Represented by Attorney Ryan P. O'Connor

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  • Method for vapor phase pulping with alcohol and sulfur dioxide
    Patent number: 8268125
    Abstract: A method for the fractionation of lignocellulosic materials into cellulose, hemicelluloses and lignin in a batch or continuous process in a treatment with vaporous mixture of aliphatic alcohol, sulfur dioxide and water. Cooking conditions are varied to get different proportions of cellulose, hemicelluloses and lignin. Chemical recovery through pressure release is described.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: September 18, 2012
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Theodora Retsina, Vesa Pylkkanen, Adriaan Reinhard P. van Heiningen
  • Process for obtaining biochemicals in a zero-liquid discharge plant
    Patent number: 8211680
    Abstract: A method is presented for the production of cellulosic ethanol, acetic acid and derivatives from the extract containing fibers and hemicelluloses after steam cooking of biomass in a host plant. The process is integrated with the host plant process to minimize the effect of loss of heat value from the extracted hemicelluloses and eliminate the need for the waste water treatment plant.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: July 3, 2012
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Theodora Retsina, Vesa Pylkkanen, Kimberley Nelson