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For the Inventor, By the Inventor

Kashihara, Japan

Norikazu Okada

This inventor holds 14 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 2007-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Norikazu Okada. Retrieved from https://idiyas.com/inventor/norikazu-okada-7ylexs6z

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

Calculating rank
USPTO Granted Patents = 14

% Patents Active = 50.0

Average Co-Inventor Count = 1.5

ph-index = 5

Forward Citations = 51(Granted Patents)


Location History:

  • Kashihara, JP (2007 - 2011)
  • Osaka, JP (2011 - 2021)

Company Filing History:

goldMedal14 out of 25,982 
 
Sharp Kabushiki Kaisha Corporation
 patents

Years Active: 2007-2021

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14 patents (USPTO):Explore Patents
1. 11092465 - Optical encoder (2021-08-17),
2. 9640700 - Optical sensor, and electronic apparatus (2017-05-02),
3. 9599506 - Optical sensor and electronic apparatus with a first auxiliary current and current amplifier (2017-03-21),
4. 9176007 - Optical sensor including light-receiving element having two terminals and electronics device including the optical sensor (2015-11-03),
5. 8664580 - Optical sensor and electronic equipment (2014-03-04),
6. 8040267 - Decoder device and movement controller (2011-10-18),
7. 7943897 - Optical encoder and electronic equipment (2011-05-17),
8. 7820957 - Optical encoder for detecting movement of a moving object and electronic equipment including the optical encoder (2010-10-26),
9. 7612327 - Optical encoder and electronic equipment having the same (2009-11-03),
10. 7439489 - Photoelectric encoder and electronic equipment using the same (2008-10-21),
11. 7391010 - Photoelectric encoder and electronic equipment with increased resolution (2008-06-24),
12. 7329858 - Optical encoder and electronic equipment having same (2008-02-12),
13. 7276687 - Optical encoder and electronic equipment using the same (2007-10-02),
14. 7223963 - Optical encoder (2007-05-29),

Title: Norikazu Okada: Innovator in Optical Technology

Introduction

Norikazu Okada is a prominent inventor based in Kashihara, Japan. He has made significant contributions to the field of optical technology, holding a total of 14 patents. His work focuses on developing advanced optical encoders and sensors that enhance the performance of electronic devices.

Latest Patents

One of Okada's latest innovations is an optical encoder that features first, second, and third light receiving elements (A, B, C) arranged sequentially and adjacent to each other. This encoder includes a detection signal generation unit that outputs a detection trigger when the output level of the second light receiving element (B) exceeds that of the first light receiving element (A). Additionally, it outputs a non-detection trigger when the output level of the third light receiving element (C) surpasses that of the second light receiving element (B). Another notable patent is for an optical sensor and electronic apparatus, which includes a photodiode that generates a photocurrent upon receiving light. This sensor utilizes a first current mirror circuit to amplify the photocurrent, allowing for high-speed operation while maintaining the photodiode's bias.

Career Highlights

Norikazu Okada is currently employed at Sharp Kabushiki Kaisha Corporation, where he continues to innovate in the field of optical technology. His work has significantly impacted the development of high-performance electronic devices.

Collaborations

Okada has collaborated with notable coworkers, including Kohei Yasukawa and Yasuyuki Shirasaka, contributing to various projects that enhance optical technology.

Conclusion

Norikazu Okada's contributions to optical technology through his patents and work at Sharp Kabushiki Kaisha Corporation highlight his role as a leading inventor in this field. His innovations continue to shape the future of electronic devices.

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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