Keiji Maekawa

This inventor holds 11 USPTO granted patents and 1 published patent application and 8 EPO patents. Top assignees: Google Inc., Hitachi, Ltd., Shionogi Company Limited. Active years: 2007-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Maekawa. Retrieved from https://idiyas.com/inventor/keiji-maekawa

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

USPTO Granted Patents = 11 (Patent Applications = 1)

% Patents Active = 90.9

EPO Patents = 8 (Patent Applications = 15)

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 35(Granted Patents)

Location History:

Hitachinaka, JP (2011)
Mito, JP (2014)
Tokyo, JP (2007 - 2024)

Company Filing History:

Shionogi Company Limited

patents

4. 1 out of 834,513

Other

patents

where one patent can have more than one assignee

Years Active: 2007-2025

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12332957 - Indicating location status (2025-06-17),

2. 12145642 - Running pattern creation device and driving control method that uses running pattern creation device (2024-11-19),

3. 11921803 - Indicating location status (2024-03-05),

4. 11487830 - Indicating location status (2022-11-01),

5. 10268770 - Indicating location status (2019-04-23),

6. 9720933 - Indicating location status (2017-08-01),

7. 9460218 - Indicating location status (2016-10-04),

8. 9223463 - Mobile user interface for a picker application (2015-12-29),

9. 8924050 - Railway signalling system and on-board signalling system (2014-12-30),

10. 7954334 - Inverter system and vehicle (2011-06-07),

11. 7211380 - Physiologically active polypeptide and DNA (2007-05-01),

Title: Keiji Maekawa: Innovator in Location-Based Technologies

Introduction

Keiji Maekawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of technology, particularly in location-based systems. With a total of 11 patents to his name, Maekawa's work has had a substantial impact on how location data is utilized in various applications.

Latest Patents

One of Maekawa's latest patents is focused on indicating location status through methods, systems, and apparatus, including computer programs encoded on a computer storage medium. This innovation allows a computing device to receive a query from a user device, along with the current time and location. The device identifies results responsive to the query, including business results associated with specific locations and operating hours. It can then select a subset of these results as open based on the current time and travel times from the user's location.

Another notable patent is the running pattern creation device and driving control method. This device includes a coordinate system formed of a positional coordinate axis and a vehicle velocity axis. It features a stopping avoidance zone position holding unit, a vehicle condition holding unit, and various pattern creation units that work together to create braking and coasting patterns. This innovation aims to enhance vehicle control and safety by avoiding stopping in designated zones.

Career Highlights

Throughout his career, Keiji Maekawa has worked with leading companies such as Google Inc. and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.

Collaborations

Maekawa has collaborated with notable individuals in the field, including Ryoichi Imaizumi and Kaleigh S. Smith. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Keiji Maekawa's contributions to location-based technologies and vehicle control systems highlight his role as a significant inventor in the tech industry. His innovative patents and collaborations continue to influence advancements in these fields.

Profile summary based on public USPTO records.