logo

For the Inventor, By the Inventor

Yokkaichi, Japan

Takumi Moriyama

This inventor holds 8 USPTO granted patents and 7 published patent applications. Top assignee: Sandisk Technologies Inc.. Active years: 2020-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takumi Moriyama. Retrieved from https://idiyas.com/inventor/takumi-moriyama

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

USPTO Granted Patents = 8 

% Patents Active = 75.0

Average Co-Inventor Count = 3.4

ph-index = 3

Forward Citations = 66(Granted Patents)


Company Filing History:

goldMedal8 out of 4,955 
 
Sandisk Technologies Inc.
 patents

Years Active: 2020-2026

Loading Chart...
8 patents (USPTO):Explore Patents
1. 12720748 - Three-dimensional memory device containing silicon oxycarbide liners and methods of forming the same (2026-08-25),
2. 12684777 - Three-dimensional memory device containing phosphorus-doped silicon oxide ion-gettering structures and methods of forming the same (2026-07-14),
3. 12004347 - Three-dimensional memory device including self-aligned drain-select-level isolation structures and method of making thereof (2024-06-04),
4. 11127655 - Memory die containing through-memory-level via structure and methods for making the same (2021-09-21),
5. 11024645 - Three-dimensional memory device containing a silicon nitride ring in an opening in a memory film and method of making the same (2021-06-01),
6. 10916556 - Three-dimensional memory device using a buried source line with a thin semiconductor oxide tunneling layer (2021-02-09),
7. 10854627 - Three-dimensional memory device containing a capped insulating source line core and method of making the same (2020-12-01),
8. 10720445 - Three-dimensional memory device having nitrided direct source strap contacts and method of making thereof (2020-07-21),

Title: Takumi Moriyama: Innovator in Memory Device Technology

Introduction

Takumi Moriyama is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of memory device technology, holding a total of 8 patents. His innovative work has advanced the capabilities of memory devices, making them more efficient and effective.

Latest Patents

One of Moriyama's latest patents is titled "Three-dimensional memory device including self-aligned drain-select-level isolation structures and method of making thereof." This invention involves forming an alternating stack of insulating layers and spacer material layers over a substrate. A plurality of arrays of memory opening fill structures is created through this stack, with dielectric plates surrounding each array. The patent details the formation of self-aligned drain-select-level isolation structures between neighboring arrays, enhancing the device's performance.

Another notable patent is "Memory die containing through-memory-level via structure and methods for making the same." This invention describes the formation of memory stack structures through an alternating stack of insulating layers. It includes a trench and a via cavity formed using a single anisotropic etch process, allowing for deeper integration into the substrate. The patent outlines the replacement of sacrificial material layers with electrically conductive layers, improving the overall functionality of the memory device.

Career Highlights

Moriyama is currently employed at Sandisk Technologies Inc., where he continues to push the boundaries of memory technology. His work has been instrumental in developing advanced memory solutions that cater to the growing demands of the tech industry.

Collaborations

Throughout his career, Moriyama has collaborated with notable colleagues, including Satoshi Shimizu and Kiyohiko Sakakibara. These partnerships have fostered a creative environment that has led to groundbreaking innovations in memory device technology.

Conclusion

Takumi Moriyama's contributions to the field of memory devices are noteworthy and impactful. His innovative patents and collaborations reflect his dedication to advancing technology. As he continues his work at Sandisk Technologies Inc., the future of memory devices looks promising.

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]
Loading…