Yokkaichi, Japan

Hisaya Sakai

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignee: Sandisk Technologies Inc.. Active years: 2021-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisaya Sakai. Retrieved from https://idiyas.com/inventor/hisaya-sakai-agvr1f8x

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 66.7

Average Co-Inventor Count = 3.4

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2021-2026

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3 patents (USPTO):Explore Patents

Title: Hisaya Sakai: Innovator in Three-Dimensional Memory Devices

Introduction

Hisaya Sakai is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of memory devices, holding a total of 3 patents. His work focuses on advancing the technology behind three-dimensional memory structures, which are crucial for modern computing.

Latest Patents

Hisaya Sakai's latest patents include innovative designs for three-dimensional memory devices. One of his notable patents is a "Three-dimensional memory device containing dummy stack edge seal structure and methods for forming the same." This invention features a memory die that includes first and second memory-region alternating stacks of insulating and conductive layers, which are strategically spaced apart by a retro-stepped dielectric structure. The design enhances the efficiency and performance of memory devices.

Another significant patent is the "Three-dimensional memory device with via structures surrounded by perforated dielectric moat structure and methods of making the same." This invention incorporates an alternating stack of insulating and conductive layers over a substrate, along with a finned dielectric moat structure that improves the overall functionality of the memory device.

Career Highlights

Hisaya Sakai is currently employed at Sandisk Technologies Inc., where he continues to innovate in the field of memory technology. His expertise and dedication have positioned him as a key player in the development of advanced memory solutions.

Collaborations

Throughout his career, Hisaya has collaborated with talented individuals such as Kazuto Ohsawa and Kota Funayama. These collaborations have fostered a creative environment that has led to groundbreaking advancements in memory technology.

Conclusion

Hisaya Sakai's contributions to the field of three-dimensional memory devices demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of memory technology, paving the way for future advancements in the industry.

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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