For the Inventor, By the Inventor

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Redwood City, CA, United States of America

Zainar, Inc.

USPTO Granted Patents = 52

EPO Patents = 3

Trademarks = 1

Forward Citations = 117

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25 inventors (with patents filed for the assignee):

Philip A Kratz (43 out of 43 patents)

Mainak M Chowdhury (32 out of 32 patents)

Daniel M Jacker (17 out of 17 patents)

4. Alexander Hooshmand (12 out of 12 patents)

5. Jonathan Lu (12 out of 12 patents)

6. Srdjan Miocinovic (11 out of 13 patents)

7. Siamak Yousefi (8 out of 8 patents)

8. Tommi Ylamurto (7 out of 33 patents)

9. Manu Seth (6 out of 28 patents)

10. Jonathan Shiao-en Lu (4 out of 11 patents)

11. Mark Bilstad (4 out of 4 patents)

12. Alexander Feldman (3 out of 5 patents)

13. Phillip B Hess (3 out of 4 patents)

14. Lingkai Kong (2 out of 52 patents)

15. Vivek Subramanian (2 out of 69 patents)

Core Competencies:

Time Synchronization

Asset Tracking

Radio Frequency Localization

Mesh Network

Time Difference of Arrival

Ranging

Phase-Based Localization

Timestamping

Network Calibration

Differential Channel State

Failure Diagnosis

Communication Paths

52 patents: Sort by Forward Citations

1. 12720479 - Method for multiple antenna joint time of arrival and angle of arrival estimation (2026-08-25),

2. 12587813 - System and methods for asset tracking, asset grouping, and error recovery (2026-03-24),

3. 12585005 - Hybrid method for time-of-arrival-based ranging (2026-03-24),

4. 12554001 - Hybrid method for time-of-arrival-based ranging (2026-02-17),

5. 12513643 - Method for clock synchronization via differential channel state information (2025-12-30),

6. 12513491 - Methods for asset tag grouping and recovery (2025-12-30),

7. 12432526 - Systems and methods for multicarrier phase-based localization (2025-09-30),

8. 12413385 - Methods for time synchronization and localization in a mesh network (2025-09-09),

9. 12375881 - Method and system for radiolocation asset tracking via a mesh network (2025-07-29),

10. 12363506 - Systems and methods for precise radio frequency localization of wireless nodes using time difference of arrival and decoupling in time synchronizing of the wireless nodes from ranging (2025-07-15),

11. 12308950 - Method for identifying and diagnosing failures in pairwise time synchronization and frequency calibration in a mesh network (2025-05-20),

12. 12293244 - Radio-frequency system characterized by flat group delay for radio-frequency time synchronization and ranging (2025-05-06),

13. 12267408 - Frequency and gain calibration for time synchronization in a network (2025-04-01),

14. 12174310 - Systems and methods for precise radio frequency localization of wireless nodes including a wireless arbitrary device using time difference of arrival (2024-12-24),

15. 12174307 - Method and system for radiofrequency localization of transmitting devices via a mesh network (2024-12-24),

Company Overview

Zainar, Inc., based in Redwood City, California, specializes in advanced time synchronization technologies that enhance asset tracking and localization solutions. The company focuses on innovative approaches such as radio frequency localization, mesh networking, and phase-based localization, enabling precise timestamping and ranging capabilities. Zainar's expertise supports a variety of applications across industries, ensuring reliable and efficient synchronization of time-sensitive data and operations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

52 Patents

#44 in Redwood City, CA

#1,588 in California

#6,760 in US

#13,545 in the World

Redwood City, CA, United States of America

Zainar, Inc.

Forward Citations = 117

25 inventors:

Philip A Kratz (43 out of 43 patents)

Mainak M Chowdhury (32 out of 32 patents)

Daniel M Jacker (17 out of 17 patents)

4. Alexander Hooshmand (12 out of 12 patents)

5. Jonathan Lu (12 out of 12 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Zainar, Inc.. Retrieved from https://idiyas.com/company/zainar

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

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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