Yokohama, Japan

Kohki Takatoh

This inventor holds 21 USPTO granted patents, primarily in Liquid Crystal Displays. Top assignees: Kabushiki Kaisha Toshiba, Mitsui Chemicals, Inc.. Active years: 1990-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kohki Takatoh. Retrieved from https://idiyas.com/inventor/kohki-takatoh

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


% Patents Active = 66.7

Average Co-Inventor Count = 3.6

ph-index = 8

Forward Citations = 193(Granted Patents)


Location History:

  • Ayase, JP (1990)
  • Kanagawa-ken, JP (2000)
  • Yokohama, JP (1992 - 2006)

Company Filing History:


Years Active: 1990-2006

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Areas of Expertise:
Liquid Crystal Display
Driving Method
Optical Axis
Thresholdless Voltage
Active Matrix
Reflective Display
Liquid Crystal Material
Gel Inclusion
Manufacturing Method
Asymmetric Voltage
Optically Active Compound
21 patents (USPTO):Explore Patents

Title: Innovator Kohki Takatoh: Contributions to Liquid Crystal Display Technology

Introduction

Kohki Takatoh, a prominent inventor based in Yokohama, Japan, has made significant strides in the field of display technology. With an impressive portfolio of 21 patents, Takatoh has focused his innovative efforts primarily on liquid crystal displays (LCDs) and their driving methods. His contributions have been instrumental in advancing display technology, particularly in enhancing performance through novel techniques.

Latest Patents

Among his latest inventions is a patent for a liquid crystal display and its driving method. This innovative display features a ferroelectric liquid crystal material that exhibits an asymmetric polarity response property. The design includes a section that applies an image signal to a pixel of the liquid crystal material for every two fields, thus forming one frame. Notably, Takatoh's method allows for the reversal of the polarity of the signal within a single frame period. The controller incorporated in his design selectively reverses the polarity in either of two manners. The first manner initiates a signal amplitude change from a polarity that generates a larger response from the material, while the second manner changes from a polarity yielding a smaller response. The chosen manner is designed to minimize brightness deviation in frames immediately following the transition, optimizing the display's overall performance.

Career Highlights

Kohki Takatoh has built an impressive career, having worked with reputable companies such as Toshiba Corporation and Mitsui Chemicals, Inc. His roles in these organizations have allowed him to enhance his expertise and contribute significantly to the field of electronic displays.

Collaborations

Throughout his career, Takatoh has collaborated with notable colleagues, including Tatsuo Saishu and Rieko Fukushima. These partnerships have fostered a rich exchange of ideas and innovations, further propelling advancements in liquid crystal display technology.

Conclusion

Kohki Takatoh's dedication to innovation and his significant achievements in the development of liquid crystal display technology underscore his status as a leading inventor. With 21 patents to his name, his work continues to impact the field, paving the way for future advancements in display technologies.

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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