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For the Inventor, By the Inventor

Gosen, Japan

Yoshiaki Hirayama

This inventor holds 10 USPTO granted patents and 10 published patent applications and 12 EPO patents. Top assignees: Denka Seiken Co., Ltd., Niigata University, Denka Company Limited. Active years: 2012-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiaki Hirayama. Retrieved from https://idiyas.com/inventor/yoshiaki-hirayama

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

USPTO Granted Patents = 10 

% Patents Active = 90.0

 

Average Co-Inventor Count = 3.8

ph-index = 1

Forward Citations = 15(Granted Patents)


Location History:

  • Niigata, JP (2012 - 2017)
  • Gosen, JP (2014 - 2019)
  • Tokyo, JP (2020 - 2022)

Company Filing History:

goldMedal7 out of 61 
 
Denka Seiken Co., Ltd.
 patents
silverMedal5 out of 73 
 
Niigata University
 patents
bronzeMedal3 out of 387 
 
Denka Company Limited
 patents
4. 1 out of 1 
 
Juntendo Education Foundation
 patent
5. 1 out of 24 
 
Juntendo Educational Foundation
 patents
6. 3 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 2012-2025

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10 patents (USPTO):Explore Patents
1. 12239621 - Prevention of kidney injury induced by hemolytic reaction (2025-03-04),
2. 11304919 - Utilization of cilastatin in inhibiting renal disorder (2022-04-19),
3. 10809265 - Method for estimating number of podocytes in urine (2020-10-20),
4. 10422728 - Sample extraction kit and sample extraction method (2019-09-24),
5. 9625452 - Method for estimating GFR (glomerular filtration rate) from measured value of megalin in urine (2017-04-18),
6. 9568470 - Method for increasing the sensitivity of immunoassay system through pretreatment of urine with denaturant (2017-02-14),
7. 8673577 - Method for examining acute renal disorder (2014-03-18),
8. 8663931 - Method for detecting renal disease comprising measuring human megalin in urine (2014-03-04),
9. 8628930 - Use of megalin in urine as marker for detecting renal disorder (2014-01-14),
10. 8105840 - Urine pretreatment agent for urinary protein quantitation, urine pretreatment method, and urinary protein quantitation method (2012-01-31),

Title: Yoshiaki Hirayama: Innovator in Renal Injury Prevention

Introduction

Yoshiaki Hirayama is a notable inventor based in Gosen, Japan. He has made significant contributions to the field of medicine, particularly in the prevention of kidney injuries. With a total of 10 patents to his name, Hirayama's work has the potential to impact many lives positively.

Latest Patents

Hirayama's latest patents focus on innovative solutions for renal injuries. One of his inventions addresses the prevention of kidney injury induced by hemolytic reactions. The invention provides an inhibitor for renal injuries using cilastatin or a pharmaceutically acceptable salt thereof. Another significant patent involves the utilization of cilastatin in inhibiting renal injuries induced by iodinated contrast mediums, showcasing his commitment to advancing medical treatments.

Career Highlights

Throughout his career, Yoshiaki Hirayama has worked with reputable organizations, including Denka Seiken Co., Ltd. and Niigata University. His experience in these institutions has allowed him to develop and refine his innovative ideas, contributing to his success as an inventor.

Collaborations

Hirayama has collaborated with esteemed colleagues such as Hiroyuki Kurosawa and Akihiko Saito. These partnerships have likely enriched his research and development efforts, fostering a collaborative environment for innovation.

Conclusion

Yoshiaki Hirayama's contributions to the field of renal injury prevention through his patents demonstrate his dedication to improving medical outcomes. His innovative work continues to pave the way for advancements in healthcare.

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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