Patents by Inventor Thomas Grave

Thomas Grave 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).

  • Three-dimensional skin model
    Publication number: 20040018149
    Abstract: The present invention relates to methods for cultivating dermal fibroblasts, methods for preparing in vitro dermis equivalents, methods for preparing three-dimensional in vitro skin equivalents, an in vitro dermis equivalent, a three-dimensional in vitro skin equivalent, and methods for determining the effect of a chemical substance or of an agent on human skin cells using the in vitro dermis equivalent and/or the in vitro skin equivalent.
    Type: Application
    Filed: July 17, 2003
    Publication date: January 29, 2004
    Inventors: Michael Noll, Thomas Grave
  • HEMT double hetero structure
    Patent number: 6028328
    Abstract: DH-PHEMT on a GaAs substrate, with a mixed crystal composition that is varied in the channel in such a way that the lower boundary of the conduction band is lowered toward the gate contact, and advantages of an SH-PHEMT are thereby simultaneously realized. For this purpose, the channel is for example InGaAs, and the In portion x of the In.sub.x Ga.sub.1-x As of the channel is increased in a step from 0.2 to 0.3 in the direction toward the gate contact.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: February 22, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Henning Riechert, Thomas Grave