Yasuhiro Shirai

This inventor holds 6 USPTO granted patents. Top assignees: Inax Corporation, Lixil Corporation. Active years: 2004-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhiro Shirai. Retrieved from https://idiyas.com/inventor/yasuhiro-shirai-73dz9x93

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 = 33.3

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 83(Granted Patents)

Location History:

Aichi, JP (2004 - 2009)
Tokoname, JP (2004 - 2012)

Company Filing History:

Years Active: 2004-2012

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8142572 - Lavatory pan washing apparatus and washing method (2012-03-27),

2. 7594282 - Western-style toilet facility (2009-09-29),

3. 7069604 - Tankless western-style flush toilet (2006-07-04),

4. 7036159 - Tankless toilet, western-style flush toilet, part washing device and spud for flush toilet (2006-05-02),

5. 6823535 - Tankless western-style flush toilet including control portion (2004-11-30),

6. 6675399 - Tankless toilet, western-style flush toilet, private part washing device and spud for flush toilet (2004-01-13),

Title: Yasuhiro Shirai: Innovator in Lavatory Technology

Introduction

Yasuhiro Shirai is a notable inventor based in Tokoname, Japan. He has made significant contributions to the field of lavatory technology, holding a total of six patents. His innovative designs focus on enhancing hygiene and efficiency in toilet facilities.

Latest Patents

Shirai's latest patents include a lavatory pan washing apparatus and a hygienic western-style toilet facility. The lavatory pan washing apparatus features a water supply unit that creates a whirling flow in the lavatory bowl, along with an air inlet pipe and an air sucking unit. This design ensures effective cleaning by controlling the water supply and air flow during the washing process. The western-style toilet facility incorporates a cleaning control valve and an ejector that prevents odors and filthy water from contaminating the toilet bowl during cleaning operations.

Career Highlights

Throughout his career, Yasuhiro Shirai has worked with prominent companies such as Inax Corporation and Lixil Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in lavatory technology.

Collaborations

Shirai has collaborated with notable coworkers, including Kenichi Ito and Katsunori Tomita. Their combined expertise has contributed to the successful development of his patented technologies.

Conclusion

Yasuhiro Shirai's contributions to lavatory technology demonstrate his commitment to innovation and hygiene. His patents reflect a deep understanding of user needs and technological advancements in the field.

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]