Patents by Inventor Thomas Albert Wielema

Thomas Albert Wielema 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).

  • OXIDATION OF STARCH
    Publication number: 20200165359
    Abstract: The invention relates to oxidized starch, to a method of preparing oxidized starch and to the use of the oxidized starch in various applications.
    Type: Application
    Filed: February 10, 2017
    Publication date: May 28, 2020
    Applicant: Coöperatie AVEBE U.A.
    Inventors: Annet VRIELING-SMIT, Thomas Albert WIELEMA, John BEUGELING
  • Process for making paper
    Patent number: 8585865
    Abstract: The invention relates to the field of papermaking. More in particular, the invention relates to the use of a novel dry strength agent in the wet-end of the papermaking process.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 19, 2013
    Assignee: Cooperatie AVEBE U.A.
    Inventor: Thomas Albert Wielema
  • PROCESS FOR MAKING PAPER
    Publication number: 20110186253
    Abstract: The invention relates to the field of papermaking. More in particular, the invention relates to the use of a novel dry strength agent in the wet-end of the papermaking process.
    Type: Application
    Filed: December 18, 2009
    Publication date: August 4, 2011
    Inventor: Thomas Albert Wielema
  • PROCESS FOR MAKING PAPER USING CATIONIC AMYLOPECTIN STARCH
    Publication number: 20100230063
    Abstract: The invention relates to the field of papermaking. More in particular, the invention relates to a method of reducing the phenomenon of vessel picking in papermaking. In accordance with the invention it has surprisingly been found that the problem vessel picking may be significantly reduced by using a cationic amylopectin starch in the paper pulp, i.e. in the wet-end.
    Type: Application
    Filed: June 8, 2007
    Publication date: September 16, 2010
    Inventors: Thomas Albert Wielema, Jan Baas
  • Oxidation of starch
    Patent number: 6777548
    Abstract: The invention relates to a process for the oxidation of starch, wherein a root or tuber starch comprising at least 95 wt. % of amylopectin, based on dry substance of the starch, is treated with an oxidizing agent and the resulting product is subjected to an alkaline treatment, said treatment comprising keeping the product for at least 15 minutes at a temperature of 20-50° C. and a pH higher than 10. The invention further relates to an oxidized starch obtainable by said process and to various applications of said oxidized starch.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 17, 2004
    Assignee: Cooperatieve Verkoop-en Productievereniging van Aardappelmeel en Derivaten AVEBE B.A.
    Inventors: Ronald Peter W. Kesselmans, Berend Cornelis A. ter Veer, Pieter Hubert Brouwer, Thomas Albert Wielema
  • Process for making paper
    Patent number: 6767430
    Abstract: The invention relates to a process for making paper and to the use of starch in said process. In particular, the invention relates to a process for making paper, wherein in the wet-end a cross-linked starch is added to an aqueous suspension of cellulose-based fibers, which starch has a degree of cross-linking of, measured as a FANN viscosity at 300 rpm, of less than 50 mPas, and a FANN-A value of less than 2.5.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: July 27, 2004
    Assignee: Cooperatieve Verkoop-en Productievereniging van Aardappelmeel en Derivaten AVEBE B.A.
    Inventors: Thomas Albert Wielema, Jan Hendriks, Ronald Peter W. Kesselmans, Jacob Terpstra