Patents by Inventor Steven Zweifach

Steven Zweifach 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: 6839554
    Abstract: The present invention provides for a system and method for sharing user event information (such as, and without limitation, presence on a network) among mobile (wireless) devices and those connected to fixed IP networks such as the Internet. In accordance with embodiments of the invention, the system and method support instant messaging between wireless devices and fixed IP network devices and between wireless devices and other wireless devices. The term wireless device is used broadly to include cell phones, laptop computers with wireless modems, wireless PDAs, and any other remote wireless devices.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: January 4, 2005
    Assignee: Invertix Corporation
    Inventors: Mark McDowell, Joseph Khalil, Steven Zweifach, Graham Stead
  • Patent number: 6668167
    Abstract: The present invention provides for a system and method for sharing user event information (such as, and without limitation, presence on a network) among mobile (wireless) devices and those connected to fixed IP networks such as the Internet. In accordance with embodiments of the invention, the system and method support instant messaging between wireless devices and fixed IP network devices and between wireless devices and other wireless devices. The term wireless device is used broadly to include cell phones, laptop computers with wireless modems, wireless PDAs, and any other remote wireless devices.
    Type: Grant
    Filed: October 6, 2001
    Date of Patent: December 23, 2003
    Inventors: Mark McDowell, Joseph Khalil, Steven Zweifach, Graham Stead, Steven Chafe
  • Publication number: 20020086672
    Abstract: The present invention provides for a system and method for sharing user event information (such as, and without limitation, presence on a network) among mobile (wireless) devices and those connected to fixed IP networks such as the Internet. In accordance with embodiments of the invention, the system and method support instant messaging between wireless devices and fixed IP network devices and between wireless devices and other wireless devices. The term wireless device is used broadly to include cell phones, laptop computers with wireless modems, wireless PDAs, and any other remote wireless devices.
    Type: Application
    Filed: October 6, 2001
    Publication date: July 4, 2002
    Inventors: Mark McDowell, Joseph Khalil, Steven Zweifach, Graham Stead, Steven Chafe
  • Publication number: 20020035605
    Abstract: Presence determination, location determination, instant messaging, and mobile commerce are integrated into a functionally seamless system, which may be implemented as an added component of a wireless provider's network. Alternatively, the integrated system enables instant messaging and mobile commerce as a centralized gateway attached to the networks of a large number of wireless providers. The gateway facilitates a business model that advances beyond today's practices, in which individual wireless carriers enter into bi-lateral agreements with specific Internet content providers. The functionally integrated gateway disclosed empowers Internet services that require real-time information about wireless subscribers in order to conduct m-commerce or offer advanced messaging services. Optimization of a wireless network is also facilitated by taking network performance measurements, without using a special drive test team, via devices that are regularly using the network during standard network operation.
    Type: Application
    Filed: March 16, 2001
    Publication date: March 21, 2002
    Inventors: Mark McDowell, Joseph Khalil, Steven Zweifach, Graham Stead, David LeJeune
  • Publication number: 20010034224
    Abstract: The present invention provides for a system and method for sharing user event information (such as, and without limitation, presence on a network) among mobile (wireless) devices and those connected to fixed IP networks such as the Internet. In accordance with embodiments of the invention, the system and method support instant messaging between wireless devices and fixed IP network devices and between wireless devices and other wireless devices. The term wireless device is used broadly to include cell phones, laptop computers with wireless modems, wireless PDAs, and any other remote wireless devices.
    Type: Application
    Filed: January 26, 2001
    Publication date: October 25, 2001
    Inventors: Mark McDowell, Joseph Khalil, Steven Zweifach, Graham Stead