Patents by Inventor Burt H. Liebowitz

Burt H. Liebowitz 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: 6820132
    Abstract: Low-cost, high performance access is provided to an Internet service provider (ISP) not convenient to a high volume Internet exchange point using a flexible hybrid terrestrial-satellite Internet communications system and method. The system and method provide high volume connectivity between an Internet service provider (ISP) and a remote customer site that generates a request for content to be supplied by the ISP. In an exemplary system, a first gateway processes a request for content generated at the remote customer site and routes the request. A second gateway processes the request routed by the first gateway to route the request to the content provider. One or more satellites are used to transmit requested content supplied by the ISP to the remote customer site.
    Type: Grant
    Filed: March 11, 2000
    Date of Patent: November 16, 2004
    Assignee: Loral CyberStar, Inc.
    Inventors: David S. Puente, Burt H. Liebowitz, Thomas Jacobson
  • Patent number: 6038594
    Abstract: Low-cost, high performance access is provided to a group of Internet service providers (ISPs) not convenient to a high volume Internet exchange point through a flexible hybrid terrestrial-satellite Internet communication system. Asymmetric hybrid circuits, that combine satellite and terrestrial backbone technologies, are used to handle asymmetry resulting from low volume requests and high volume responses. A user request is coupled via routers and servers to a point of presence (POP) on a group ISP backbone network. The ISP's backbone couples ISP's POPs to a terrestrial gateway location, which is coupled to a high volume ISP peered with other high volume ISPs. Requests are directed to the high volume ISP through a POP on the backbone of the high volume ISP. Responses from the high volume ISP are routed to a hybrid network provider. Responses packets are translated into permanent virtual circuits (PVC) by a router.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: March 14, 2000
    Assignee: Loral CyberStar, Inc.
    Inventors: David S. Puente, Burt H. Liebowitz, Thomas Jacobson