Patents by Inventor Godwin Severa

Godwin Severa 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).

  • Patent number: 11661338
    Abstract: Some embodiments described herein provide for methods for synthesizing magnesium borohydride from hydrogenation of magnesium boride at moderate temperature and pressure in the presence of a modifier. The modifier may be in form of hydrides, liquid hydrogen carriers, ammonia borane, metallic species, croconate anion based materials, ethers, amines or imines, metal carbides, borides, graphene, arenes, magnesium, aluminum, calcium or ionic liquids. Some embodiments provide for charging magnesium boride in presence of a modifier at high pressure hydrogen while simultaneously heating the material. The modification in some instances may lead to an improved magnesium boride product with enhanced properties for application in other hydrogen storage systems.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 30, 2023
    Assignee: University of Hawaii
    Inventors: Godwin Severa, Craig M. Jensen, Cody Sugai, Stephen Young-min Kim
  • Publication number: 20200270127
    Abstract: Some embodiments described herein provide for methods for synthesizing magnesium borohydride from hydrogenation of magnesium boride at moderate temperature and pressure in the presence of a modifier. The modifier may be in form of hydrides, liquid hydrogen carriers, ammonia borane, metallic species, croconate anion based materials, ethers, amines or imines, metal carbides, borides, graphene, arenes, magnesium, aluminum, calcium or ionic liquids. Some embodiments provide for charging magnesium boride in presence of a modifier at high pressure hydrogen while simultaneously heating the material. The modification in some instances may lead to an improved magnesium boride product with enhanced properties for application in other hydrogen storage systems.
    Type: Application
    Filed: September 21, 2018
    Publication date: August 27, 2020
    Inventors: Godwin Severa, Craig M. Jensen, Cody Sugai, Stephen Young-min Kim
  • Patent number: 8147788
    Abstract: A method is disclosed for directly preparing an alkaline earth metal borohydride, i.e. Mg(BH4)2, from the alkaline earth metal boride MgB2 by hydrogenating the MgB2 at an elevated temperature and pressure. The boride may also be doped with small amounts of a metal chloride catalyst such as TiCl3 and/or NiCl2. The process provides for charging MgB2 with high pressure hydrogen above at least 70 MPa while simultaneously heating the material to about 350° C. to about 400° C. The method is relatively simple and inexpensive and provides a reversible hydride compound having a hydrogen capacity of at least 11 wt %.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: April 3, 2012
    Assignee: Sandia Corporation
    Inventors: Ewa Carin Ellinor Rönnebro, Godwin Severa, Craig M. Jensen