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For the Inventor, By the Inventor

Tokyo, Japan

Takao Marukame

This inventor holds 69 USPTO granted patents and 18 published patent applications, primarily in Neural Network Technology (CPC class G06F). Top assignees: Kabushiki Kaisha Toshiba, Toshiba Memory Corporation, Toshiba Information Systems (Japan) Corporation. Active years: 2011-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Marukame. Retrieved from https://idiyas.com/inventor/takao-marukame

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

USPTO Granted Patents = 69 

% Patents Active = 65.2

Average Co-Inventor Count = 4.4

ph-index = 6

Forward Citations = 175(Granted Patents)

Forward Citations (Not Self Cited) = 147(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Fuchu, JP (2011 - 2013)
  • Yokohama, JP (2014)
  • Kanagawa, JP (2014 - 2015)
  • Chuo-ku, JP (2015)
  • Chuo Tokyo, JP (2022)
  • Tokyo, JP (2011 - 2023)
  • Chuo, JP (2017 - 2024)

Company Filing History:

goldMedal63 out of 53,262 
 
Kabushiki Kaisha Toshiba
 patents
silverMedal6 out of 2,955 
 
Toshiba Memory Corporation
 patents
bronzeMedal1 out of 10 
 
Toshiba Information Systems (Japan) Corporation
 patents
where one patent can have more than one assignee

Years Active: 2011-2026

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Areas of Expertise:
Neural Network
Synaptic Circuit
Memory Device
Reinforcement Learning
Inference System
Arithmetic Device
Nonvolatile Memory
Error Correction
Authentication System
Imaging Element
Calculation Device
Key-Value Store
69 patents (USPTO):Explore Patents
1. 12755138 - Neural network apparatus (2026-10-06),
2. 12688011 - Multiplication device, multiply-accumulate operation device, matrix operation device, and reservoir device (2026-07-21),
3. 12657441 - Spiking neural network device that updates synaptic weight based on output frequency and learning method of spiking neural network device (2026-06-16),
4. 12333421 - Synaptic circuit and neural networking apparatus (2025-06-17),
5. 12182693 - Memory device and neural network apparatus (2024-12-31),
6. 12093809 - Arithmetic device and neural network device (2024-09-17),
7. 12093807 - Neural network, method of control of neural network, and processor of neural network (2024-09-17),
8. 12073311 - Synaptic circuit and neural network apparatus (2024-08-27),
9. 11893476 - Processing apparatus and inference system (2024-02-06),
10. 11777006 - Nonvolatile memory device (2023-10-03),
11. 11651193 - Operation apparatus (2023-05-16),
12. 11636315 - Synapse circuit and arithmetic device (2023-04-25),
13. 11625579 - Spiking neural net work device and learning method of spiking neural network device (2023-04-11),
14. 11620501 - Neural network apparatus (2023-04-04),
15. 11586897 - Reinforcement learning system (2023-02-21),

Title: Innovative Mind: Takao Marukame and His Pioneering Patents

Introduction

Takao Marukame, based in Tokyo, Japan, is a notable inventor recognized for his significant contributions to the fields of memory devices and neural networks. With a remarkable total of 65 patents to his name, Marukame's innovative approaches have positioned him at the forefront of technological advancement.

Latest Patents

Among his latest inventions is a memory device and neural network apparatus designed for efficiently storing weights in a neural network. This device incorporates an update circuit that modifies the difference between charges in two accumulation circuits, allowing for more precise weight output signals. Furthermore, the arithmetic device he devised includes multiple product-sum-operation circuits, which processes input signals and weight values to determine the most effective output signal based on the calculated product-sum-operation values.

Career Highlights

Takao Marukame has made significant strides in his career, having worked with prestigious organizations such as Kabushiki Kaisha Toshiba and Toshiba Memory Corporation. His experience within these leading companies has undoubtedly influenced his remarkable output of patents and innovative designs.

Collaborations

Throughout his career, Marukame has collaborated with talented individuals, including Yoshifumi Nishi and Tomoaki Inokuchi, whose combined expertise has propelled his initiatives forward and fostered innovative developments within their projects.

Conclusion

Takao Marukame exemplifies the spirit of innovation with his extensive portfolio of patents and his contributions to technology, specifically in the realms of memory devices and neural networks. His work continues to inspire future advancements, showcasing the endless possibilities within the fields of invention and innovation.

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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