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For the Inventor, By the Inventor

San Francisco, CA, United States of America

Christina Ying Liu

This inventor holds 77 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Digital Content Services (CPC class G06F). Top assignees: Flexiworld Technologies, Inc., Flexijet Technologies, Inc., Flexiworld, Inc.. Active years: 2005-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Christina Ying Liu. Retrieved from https://idiyas.com/inventor/christina-ying-liu

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 77 

% Patents Active = 32.5


Average Co-Inventor Count = 2.0

ph-index = 39

Forward Citations = 3,373(Granted Patents)

Forward Citations (Not Self Cited) = 816(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Vancouver, WA (US) (2005 - 2018)
  • Santa Clara, CA (US) (2018)
  • Freemont, CA (US) (2010 - 2020)
  • San Francsico, CA (US) (2020)
  • Fremont, CA (US) (2012 - 2021)
  • San Francisco, CA (US) (2017 - 2022)

Company Filing History:

goldMedal71 out of 84 
 
Flexiworld Technologies, Inc.
 patents
silverMedal1 out of 1 
 
Flexijet Technologies, Inc.
 patent
bronzeMedal1 out of 1 
 
Flexiworld, Inc.
 patent
4. 1 out of 1,723 
 
Mattel, Inc.
 patents
5. 1 out of 132,108 
 
Samsung Electronics Co., Ltd.
 patents
6. 2 out of 834,570 
Other
 patents

Years Active: 2005-2022

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Areas of Expertise:
Digital Content Services
Wireless Output Devices
User Data Mining
Internet Based Services
Mobile Information Apparatus
Wireless Printing
Voice Activated Commands
Content Management
Digital Content Transmission
Wireless Connectivity
Output Systems
Smart Devices
77 patents (USPTO):Explore Patents
1. RE49176 - Apparatus, methods, or software for data mining user information by providing services over the internet for connecting people (2022-08-15),
2. 11416197 - Wireless controllers connectable to televisions, wireless televisions, wireless output controllers, or wireless output devices for receiving digital content from one or more servers over the internet (2022-08-16),
3. 11204729 - Internet based digital content services for pervasively providing protected digital content to smart devices based on having subscribed to the digital content service (2021-12-21),
4. 11169756 - Method for capturing, storing, accessing, and outputting digital content (2021-11-09),
5. 11096056 - Output devices, such as televisions, output controllers, or audio output devices, that are setup to wirelessly receive digital content from a digital content service over the internet or from a wireless information apparatus that is in the same network as the output devices (2021-08-17),
6. 11029903 - Output systems, such as television controllers, televisions, display devices, or audio output devices, operable for playing digital content wirelessly received either from a digital content service over the internet or wirelessly received from a client device that is in the same network as the output system (2021-06-08),
7. 10915296 - Information apparatus that includes a touch sensitive screen interface for managing or replying to e-mails (2021-02-09),
8. 10873856 - Printing devices supporting printing over air or printing over a wireless network (2020-12-22),
9. 10866773 - Information apparatus for playing digital content that is received from a digital content service provided over the internet (2020-12-15),
10. 10860290 - Mobile information apparatuses that include a digital camera, a touch sensitive screen interface, support for voice activated commands, and a wireless communication chip or chipset supporting IEEE 802.11 (2020-12-08),
11. 10846031 - Software application for a mobile device to wirelessly manage or wirelessly setup an output system or output device for service (2020-11-24),
12. 10841798 - Information apparatus or client software that wirelessly discovers, within short range, one or more output devices for establishing a wireless connection (2020-11-17),
13. 10768871 - Wireless output devices or wireless controllers for establishing wireless connectivity and for receiving digital content (2020-09-08),
14. 10761791 - Wireless printing devices that provide printing services over a network without a need for a client device of the printing device to use, at the client device, a printer specific printer driver (2020-09-01),
15. 10740066 - Output devices that establish wireless connection with an information apparatus subsequent to having been wirelessly discovered by the information apparatus (2020-08-11),

Title: **Christina Ying Liu: An Innovator in Data Mining and Wireless Technology**

Introduction

Christina Ying Liu, based in San Francisco, California, is a notable inventor who has made significant contributions to the fields of data mining and wireless technology. With an impressive portfolio of 77 patents, Christina's innovations have impacted how users interact with digital services and technology.

Latest Patents

Among Christina's latest patents is a pioneering apparatus and methods for data mining user information, which enables anonymous voice communication between two parties. This technology employs a reference code that facilitates secure voice interactions without disclosing the user's address. The system also integrates an Internet-based service for users to post information and engage in transactions, while systematically mining data from these activities. Furthermore, Christina has developed a wireless output device capable of connecting to a wireless local area network, designed to receive digital content from servers across the Internet, enhancing the user experience for media consumption.

Career Highlights

Christina Ying Liu has built her career at reputable technology firms, including Flexiworld Technologies, Inc. Her work has been pivotal in developing solutions that blend user data with technology to create efficient and secure communication channels.

Collaborations

Throughout her career, Christina has collaborated with other talented professionals, including William Ho Chang. These partnerships have fostered an environment of innovation and creativity, driving forward her ambitious projects in technology.

Conclusion

Christina Ying Liu's innovative approach to data mining and wireless technologies illustrates her role as a leading inventor in her field. Her ongoing contributions and patent acquisitions reflect her dedication to advancing the technological landscape, providing valuable services and tools that enhance user interaction in the digital realm.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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