Patents by Inventor Martin Dumas

Martin Dumas 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).

  • Publication number: 20020014037
    Abstract: The present invention relates to a sap collecting device, in which an aceric gathering anchor is placed in a tree trunk hole, it draws sap and a plug closes the hole after the season is over. A ball valve type of anchor comprises a channel for sap compatible to existing tubing. A conical shallow tap hole is first drilled. At the head of the anchor there is a plug which is embedded in the sap wood and the anchor is maintained by the bark permanently. A permanent sealing cap surrounds the head of the plug and is maintained moist, to prevent dryness and to limit other hazards, as well as to augment circulation of the sap, thereby providing a sustainable alternative to maple bush, permitting fewer tappings and less damages.
    Type: Application
    Filed: July 2, 2001
    Publication date: February 7, 2002
    Inventor: Martin Dumas
  • Patent number: D679618
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 9, 2013
    Assignee: Electronique Giant Inc.
    Inventors: Martin Dumas, Dong Wang
  • Patent number: D683251
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 28, 2013
    Assignee: Electronique Giant Inc.
    Inventors: Martin Dumas, Dong Wang