Patents by Inventor Thomas Clavey

Thomas Clavey 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 preparing acetals and ketals
    Patent number: 9309178
    Abstract: The present invention is concerned with a process for preparing acetals and ketals which comprises (i) reacting an aldehyde or ketone with an alcohol in the presence of a solid acid at a temperature of below ?40° C., and (ii) removing water and lower aliphatic alcohol and/or sugar alcohol from the reaction product by pervaporation.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 12, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventor: Thomas Clavey
  • Process for preparing or recovering acetals or ketals by means of pervaporation
    Patent number: 9309177
    Abstract: The process of the present invention comprises reacting an aldehyde or ketone with an alcohol in the presence of a solid acid, and removing water and methanol from the reaction product by pervaporation, characterized in that a membrane having a flux density for water of 0.04 to 2.8 kg/(hm2) is used to remove the water and another membrane having a flux density for methanol of 2.0 to 100 kg/(hm2) is used to remove the methanol.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 12, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventor: Thomas Clavey
  • PROCESS FOR PREPARING ACETALS AND KETALS
    Publication number: 20140323771
    Abstract: The present invention is concerned with a process for preparing acetals and ketals which comprises (i) reacting an aldehyde or ketone with an alcohol in the presence of a solid acid at a temperature of below ?40° C., and (ii) removing water and lower aliphatic alcohol and/or sugar alcohol from the reaction product by pervaporation.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 30, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventor: Thomas Clavey
  • PROCESS FOR PREPARING OR RECOVERING ACETALS OR KETALS BY MEANS OF PERVAPORATION
    Publication number: 20140288333
    Abstract: The process of the present invention comprises reacting an aldehyde or ketone with an alcohol in the presence of a solid acid, and removing removing water and methanol from the reaction product by pervaporation, characterized in that a membrane having a flux density for water of 0.04 to 2.8 kg/(hm2) is used to remove the water and another membrane having a flux density for methanol of 2.0 to 100 kg/(hm2) is used to remove the methanol.
    Type: Application
    Filed: June 29, 2012
    Publication date: September 25, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventor: Thomas Clavey
  • Process and manufacturing equipment for preparing acetals and ketals
    Patent number: 6806392
    Abstract: A process for the preparation of acetals and ketals by reacting an aldehyde or ketone with an alcohol in the presence of an acidic catalyst and removing water by pervaporation. Manufacturing equipment for the preparation of acetals and ketones is also provided.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: October 19, 2004
    Assignee: DSM IP Assets B.V.
    Inventors: Volkmar Boesch, Juan Ramon Herguijuela, Thomas Clavey