Tokyo, Japan

Takashi Kato

This inventor holds 39 USPTO granted patents and 14 published patent applications and 8 EPO patents, primarily in Optical Communication. Top assignees: Kohoku Kogyo Co., Ltd., Sumitomo Chemical Company, Limited, Nippon Sanso Corporation. Active years: 1977-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Kato. Retrieved from https://idiyas.com/inventor/takashi-kato-8oqht2tm

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

Calculating rank
USPTO Granted Patents = 39 

% Patents Active = 79.5

 

Average Co-Inventor Count = 2.6

ph-index = 8

Forward Citations = 161(Granted Patents)


Location History:

  • Amagasaki, JA (1977)
  • Amagasaki, JP (1980)
  • Toyonaka, JP (1981 - 1982)
  • Tokyo, JP (1983 - 2022)
  • Nagahama, JP (2019 - 2023)

Company Filing History:

goldMedal8 out of 16 
 
Kohoku Kogyo Co., Ltd.
 patents
silverMedal6 out of 6,964 
 
Sumitomo Chemical Company, Limited
 patents
bronzeMedal4 out of 182 
 
Nippon Sanso Corporation
 patents
4. 3 out of 16,618 
 
Mitsubishi Electric Corporation
 patents
5. 3 out of 1,358 
 
The University of Tokyo
 patents
6. 2 out of 2,954 
 
Cornell University
 patents
7. 1 out of 824 
 
Celanese Gmbh
 patents
8. 1 out of 1 
 
Idevice, Inc.
 patent
9. 1 out of 1,329 
 
Japan Science and Technology Agency
 patents
10. 1 out of 12 
 
Kabushiki Kaisha Meiji Gomu Kasei
 patents
11. 1 out of 361 
 
Keio University
 patents
12. 1 out of 1 
 
Kohoku Kogyo Cp., Ltd.
 patent
13. 1 out of 19 
 
Mistubishi Electric Corporation
 patents
14. 1 out of 1,766 
 
National Institute of Advanced Industrial Science and Technology
 patents
15. 1 out of 2,467 
 
Nec Electronics Corporation
 patents
16. 1 out of 129 
 
Neturen Co., Ltd.
 patents
17. 1 out of 86 
 
Shonan Gosei-Jushi Seisakusho K.k.
 patents
18. 1 out of 58,147 
 
Sony Corporation
 patents
19. 1 out of 4,260 
 
Sony Group Corporation
 patents
20. 1 out of 8,267 
 
Tdk Corporation
 patents
21. 1 out of 93 
 
The University of Electro-Communications
 patents
where one patent can have more than one assignee

Years Active: 1977-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Optical Communication Module
Heat Exchanger
Particle Analyzer
Optical Measurement Device
Mechanical Ventilator
Variable Optical Attenuator
Interference Filter
Optical Multiplexer
Electrostatic Induction
Liquid Crystalline Compound
Drilling Apparatus
Thermoplastic Resin
39 patents (USPTO):Explore Patents

Title: Innovations by Takashi Kato in Optical Technologies

Introduction

Takashi Kato, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of optical technologies. With an impressive portfolio of 35 patents, he has developed innovative solutions that enhance the performance of optical systems. His work is characterized by a deep understanding of light manipulation and signal processing.

Latest Patents

Among his latest creations is the **Slope Gain Equalizer**, which corrects the slope of a gain characteristic of an optical signal within a predetermined wavelength bandwidth. This invention integrates an interference filter designed to manage insertion losses in opposite directions, offering improved signal clarity during transmission and reflection through dual-core and single-core fiber collimators.

Another notable invention is the **Interference Filter Module**, which features two optical fiber collimators aligned on an optical axis. This module is designed to hold interference filters securely within a specially crafted casing. The unique design includes two filter holding portions that allow for rotational adjustments, optimizing the performance of optical systems by accommodating specific interference patterns.

Career Highlights

Throughout his career, Takashi Kato has worked with reputable companies such as Kohoku Kogyo Co., Ltd. and Sumitomo Chemical Company, Limited. His involvement in these organizations has allowed him to refine his skills and innovate within the optical technologies sector.

Collaborations

Takashi has collaborated with several talented individuals, including Katsuhiro Iwasaki and Ryoichi Ikeda. These partnerships have further enriched his contributions to the industry and have facilitated the development of groundbreaking inventions.

Conclusion

Takashi Kato's impressive array of patents and his collaborations with esteemed colleagues underscore his status as a leading inventor in the field of optical technologies. His innovative work continues to influence the advancement of optical signal processing and communications, solidifying his legacy as a pioneer in this vital 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]
Loading…