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For the Inventor, By the Inventor

Tokyo, Japan

Eiko Yamada

This inventor holds 6 USPTO granted patents and 3 published patent applications. Top assignee: Nec Corporation. Active years: 1998-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiko Yamada. Retrieved from https://idiyas.com/inventor/eiko-yamada

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

Calculating rank
USPTO Granted Patents = 6 

% Patents Active = 83.3

Average Co-Inventor Count = 1.6

ph-index = 2

Forward Citations = 27(Granted Patents)


Company Filing History:

goldMedal6 out of 36,770 
 
Nec Corporation
 patents

Years Active: 1998-2012

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6 patents (USPTO):Explore Patents
1. 8270946 - Mobile terminal and method for controlling lock and unlock functions by means of contact sensor (2012-09-18),
2. 7835728 - Voice processing unit and system, and voice processing method (2010-11-16),
3. 7478046 - Server-client type speech recognition apparatus and method (2009-01-13),
4. 6341263 - Speech recognition apparatus, method and storage medium thereof (2002-01-22),
5. 6006184 - Tree structured cohort selection for speaker recognition system (1999-12-21),
6. 5712956 - Feature extraction and normalization for speech recognition (1998-01-27),

Title: Eiko Yamada: Innovator in Mobile Technology

Introduction

Eiko Yamada is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of mobile technology, holding a total of 6 patents. Her innovative work focuses on enhancing user interaction with mobile devices through advanced sensor technology.

Latest Patents

One of Eiko Yamada's latest patents is a mobile terminal and method for controlling lock and unlock functions by means of a contact sensor. This invention allows a mobile terminal to switch its functions based on whether a sensor is contacted or not. The mobile phone includes a touch sensor positioned where a user typically holds the device. While the user maintains contact with the touch sensor, the phone operates normally. If the phone is not in contact with the sensor for a certain duration, it switches to a lock mode. When the user contacts the sensor again, the phone transitions to an unlock processing state, allowing for password entry and unlocking.

Another notable patent is related to a voice processing unit and system. In this invention, a client transmits a service request signal to a web server, which generates a unique ID for each session. The client then sends input voice information to a voice processing server along with the ID. This system enables the server to understand the relationship between the information downloaded from the web server and the voice information transmitted from the client, ensuring accurate processing and response.

Career Highlights

Eiko Yamada is currently employed at NEC Corporation, where she continues to develop innovative technologies. Her work has significantly impacted the mobile technology landscape, making devices more user-friendly and efficient.

Collaborations

Eiko has collaborated with notable colleagues, including Hiroaki Hattori and Hiroshi Hagane, contributing to various projects that enhance mobile technology.

Conclusion

Eiko Yamada's contributions to mobile technology through her patents and innovative ideas have established her as a key figure in the industry. Her work continues to influence the way users interact with mobile devices, paving the way for future advancements.

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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