Patents by Inventor Dafeng Ou

Dafeng Ou 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: 12395470
    Abstract: Methods, systems, and storage media for providing ephemeral messages are disclosed. Exemplary implementations may: receive, at a first device, a request from a first user to send an ephemeral message to a second user; encrypt the payload of the ephemeral message; send the ephemeral message to the second user according to the recipient identifier; store the ephemeral message locally on the first device of the first user and the second device of the second user; and delete the ephemeral message from the first device and the second device upon expiration of the specified duration of time.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: August 19, 2025
    Assignee: WhatsApp LLC
    Inventors: Jimmy Enrico Jacques Holzer, Kevin Matthew Christensen, Shalini Sah, Santiago Pina Ros, Elton Kyin-Fong Leong, Zafir Khan, Dafeng Ou, Tuan Van Nguyen
  • Patent number: 11646985
    Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for dynamically controlling ephemeral messaging threads and ephemeral message duration settings across computing devices while improving security by maintaining end-to-end encryption. In particular, in one or more embodiments, the disclosed systems can transmit encrypted ephemeral messages, including ephemeral message duration settings and ephemeral setting timestamps. The disclosed systems can decrypt received messages on receiving client devices and dynamically apply ephemeral message duration settings to different message threads. For example, the disclosed systems can modify existing duration settings at a receiving client device to match a received ephemeral message duration setting based on determining that the received ephemeral setting timestamp predates an existing setting timestamp.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: May 9, 2023
    Assignee: WhatsApp LLC
    Inventors: Santiago Pina Ros, Jimmy Enrico Jacques Holzer, Shalini Sah, Elton Kyin-Fong Leong, Dafeng Ou, Christopher Luc, Nurzhan Bakibayev, Zafir Khan
  • Publication number: 20220141166
    Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for dynamically controlling ephemeral messaging threads and ephemeral message duration settings across computing devices while improving security by maintaining end-to-end encryption. In particular, in one or more embodiments, the disclosed systems can transmit encrypted ephemeral messages, including ephemeral message duration settings and ephemeral setting timestamps. The disclosed systems can decrypt received messages on receiving client devices and dynamically apply ephemeral message duration settings to different message threads. For example, the disclosed systems can modify existing duration settings at a receiving client device to match a received ephemeral message duration setting based on determining that the received ephemeral setting timestamp predates an existing setting timestamp.
    Type: Application
    Filed: September 7, 2021
    Publication date: May 5, 2022
    Inventors: Santiago Pina Ros, Jimmy Enrico Jacques Holzer, Shalini Sah, Elton Kyin-Fong Leong, Dafeng Ou, Christopher Luc, Nurzhan Bakibayev, Zafir Khan
  • Patent number: 11115363
    Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for dynamically controlling ephemeral messaging threads and ephemeral message duration settings across computing devices while improving security by maintaining end-to-end encryption. In particular, in one or more embodiments, the disclosed systems can transmit encrypted ephemeral messages, including ephemeral message duration settings and ephemeral setting timestamps. The disclosed systems can decrypt received messages on receiving client devices and dynamically apply ephemeral message duration settings to different message threads. For example, the disclosed systems can modify existing duration settings at a receiving client device to match a received ephemeral message duration setting based on determining that the received ephemeral setting timestamp predates an existing setting timestamp.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: September 7, 2021
    Assignee: WHATSAPP LLC
    Inventors: Santiago Pina Ros, Jimmy Enrico Jacques Holzer, Shalini Sah, Elton Kyin-Fong Leong, Dafeng Ou, Christopher Luc, Nurzhan Bakibayev, Zafir Khan