Padmanabhan Soundararajan

This inventor holds 39 USPTO granted patents and 9 published patent applications, plus 2 CIPO patents and 2 EPO patents, primarily in Audience Measurement. Top assignees: The Nielsen Comapny (US), LLC, Nielsen Consumer LLC, The Neilsen Company (US), LLC. Active years: 2014-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Padmanabhan Soundararajan. Retrieved from https://idiyas.com/inventor/padmanabhan-soundararajan

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

Calculating rank

USPTO Granted Patents = 39 (Patent Applications = 9)

% Patents Active = 87.2

CIPO Patents = 2

EPO Patents = 2 (Patent Applications = 3)

Average Co-Inventor Count = 2.7

ph-index = 8

Forward Citations = 238(Granted Patents)

Company Filing History:

35 out of 2,275

The Nielsen Comapny (US), LLC

The Neilsen Company (US), LLC

patents

4. 1 out of 22

The Nielson Company (US), LLC

patents

Years Active: 2014-2025

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Areas of Expertise:

Audience Counting

Audio Watermarking

Media Presentation

Mood Identification

Image Analysis

Environmental Monitoring

Supplemental Media

Receipt Decoding

Logo Exposure Measurement

39 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12505848 - Audio watermarking for people monitoring (2025-12-23),

2. 12323657 - Methods and apparatus to count people in an audience (2025-06-03),

3. 12250434 - Methods and apparatus to present supplemental media on a second screen (2025-03-11),

4. 12132958 - Methods and apparatus to count people in an audience (2024-10-29),

5. 11942099 - Audio watermarking for people monitoring (2024-03-26),

6. 11768993 - Methods, systems, apparatus and articles of manufacture for receipt decoding (2023-09-26),

7. 11711576 - Methods and apparatus to count people in an audience (2023-07-25),

8. 11558665 - Methods and apparatus to count people (2023-01-17),

9. 11527070 - Methods and apparatus to count people in images (2022-12-13),

10. 11410446 - Methods, systems, apparatus and articles of manufacture for receipt decoding (2022-08-09),

11. 11357431 - Methods and apparatus to identify a mood of media (2022-06-14),

12. 11303960 - Methods and apparatus to count people (2022-04-12),

13. 11250865 - Audio watermarking for people monitoring (2022-02-15),

14. 11197060 - Methods and apparatus to count people in an audience (2021-12-07),

15. 11070892 - Methods and apparatus to present supplemental media on a second screen (2021-07-20),

Title: The Innovative Contributions of Padmanabhan Soundararajan

Introduction: Padmanabhan Soundararajan, based in Tampa, FL, is a prolific inventor with an impressive portfolio of 36 patents to his name. His innovations primarily focus on enhancing audience measurement technologies, showcasing his ability to blend technical expertise with practical applications.

Latest Patents: Among his latest patents, Soundararajan has developed methods and apparatus designed to count individuals in an audience. One notable invention involves a portable device that utilizes location data and proximity data to determine the presence of a person within a specified distance. This technology can infer an individual's presence or absence in a media exposure environment and assess the accuracy of the data collected by people meters. Additionally, he created an audio watermarking method for monitoring individuals, which includes detecting unique watermarks in audio signals from acoustic sensors to identify media exposure accurately. This innovation can classify watermarks based on their origin, thereby gathering information about mobile devices or users exposed to media.

Career Highlights: Soundararajan has made significant contributions during his tenure at reputable companies such as The Nielsen Company and Nielsen Consumer LLC. His expertise in media measurement technology has undoubtedly led to advancements in how audience engagement is quantified.

Collaborations: Throughout his career, Padmanabhan has worked alongside notable colleagues, including Venugopal Srinivasan and Alexander Pavlovich Topchy. This collaboration among skilled professionals has fostered a creative environment that has driven forward-thinking innovations.

Conclusion: Padmanabhan Soundararajan's impressive body of work reflects his commitment to innovation and his substantial impact on the field of audience measurement technologies. His patents pave the way for new methodologies that enhance the understanding of media consumption and the interactions between devices and their users. As the landscape of technology continues to evolve, Soundararajan's contributions will likely be influential in shaping future advancements.

Profile summary based on public USPTO records.