Patents by Inventor Per Berre Eriksen

Per Berre Eriksen 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 and apparatus for modification of lignocellulosic materials and products of modified lignocellulosic materials obtained by the process
    Patent number: 9091022
    Abstract: A process and apparatus for the preparation of a modified lignocellulosic material by treating the lignocellulosic material in a first activator zone having an atmosphere of one or more acid anhydrides in vapour form in a gas at a gauge pressure of 0-50 kPag and a temperature of 100-160° C., and then treating the lignocellulosic material in a second reactor zone having an atmosphere of a gas at a gauge pressure of 0-50 kPag and a temperature of 120-190° C., thereafter stripping the lignocellulosic material with steam or water in a stripper zone, and optionally further processing. The process is more efficient as compared with the prior art processes by providing a better access of the acid anhydrides to the sites of the reactive lignocellulosic hydroxyl groups (—OH), which are located on the internal surfaces of pores and capillary channels in the lignocellulose. Furthermore, the apparatus is relatively simple.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: July 28, 2015
    Assignee: Danish Plant Fibre Technologies Holding A/S
    Inventors: Per Berre Eriksen, Peter Larsen, Eskild Kyhn
  • PROCESS AND APPARATUS FOR MODIFICATION OF LIGNOCELLULOSIC MATERIALS AND PRODUCTS OF MODIFIED LIGNOCELLULOSIC MATERIALS OBTAINED BY THE PROCESS
    Publication number: 20130277000
    Abstract: A process and apparatus for the preparation of a modified lignocellulosic material by treating the lignocellulosic material in a first activator zone having an atmosphere of one or more acid anhydrides in vapour form in a gas at a gauge pressure of 0-50 kPag and a temperature of 100-160° C., and then treating the lignocellulosic material in a second reactor zone having an atmosphere of a gas at a gauge pressure of 0-50 kPag and a temperature of 120-190° C., thereafter stripping the lignocellulosic material with steam or water in a stripper zone, and optionally further processing. The process is more efficient as compared with the prior art processes by providing a better access of the acid anhydrides to the sites of the reactive lignocellulosic hydroxyl groups (—OH), which are located on the internal surfaces of pores and capillary channels in the lignocellulose. Furthermore, the apparatus is relatively simple.
    Type: Application
    Filed: January 10, 2011
    Publication date: October 24, 2013
    Applicant: DANISH PLANT FIBRE TECHNOLOGIES HOLDING A/S
    Inventors: Per Berre Eriksen, Peter Larsen, Esklid Kyhn
  • Preparation and use of sorptive lignocellulosic material for decontamination of fluid and aqueous media
    Patent number: 7413662
    Abstract: A modified sorptive lignocellulosic fibre material with hydroxyl groups on the lignocellulosic fibres doubly modified by esterification with a combination of monocarboxylic and dicarboxylic acid ester groups. A process for the preparation of the sorptive material. The sorptive fibre material is effective for the removal of oils and other contaminants including heavy metals from a fluid such as contaminated water by a combined sorption of hydrophobic contaminants and ion exchange.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 19, 2008
    Assignee: Danish Plant Fibre Technologies Holding A/S
    Inventors: Per Berre Eriksen, John Mark Lawther, Peter Larsen
  • Modified Sorptive Lignocellulosic Fibre Material, Preparation and Use Thereof and Method for Decontamination of Fluid and Aqueous Media
    Publication number: 20080017581
    Abstract: A modified sorptive lignocellulosic fibre material with hydroxyl groups on the lignocellulosic fibres doubly modified by esterification with a combination of monocarboxylic and dicarboxylic acid ester groups. A process for the preparation of the sorptive material. The sorptive fibre material is effective for the removal of oils and other contaminants including heavy metals from a fluid such as contaminated water by a combined sorption of hydrophobic contaminants and ion exchange.
    Type: Application
    Filed: December 20, 2005
    Publication date: January 24, 2008
    Applicant: Danish Plant Fiber Technologies Holding A/S
    Inventors: Per Berre Eriksen, John Mark Lawther, Peter Larsen