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For the Inventor, By the Inventor

Chino, Japan

Katsuji Arakawa

USPTO Granted Patents = 16 

Average Co-Inventor Count = 2.1

ph-index = 6

Forward Citations = 146(Granted Patents)


Location History:

  • Suwa, JP (2002 - 2006)
  • Nagano, JP (2007)
  • Chino, JP (2006 - 2021)

Company Filing History:

goldMedal16 out of 33,404 
 
Seiko Epson Corporation
 patents

Years Active: 2002-2021

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16 patents (USPTO):Explore Patents
1. 11042023 - Wavelength variable interference filter having substrate hydroxyl group concentration, electronic component, manufacturing method of electronic component, and electronic apparatus (2021-06-22),
2. 9372337 - Wavelength variable interference filter, manufacturing method of wavelength variable interference filter, optical filter device, optical module, and electronic apparatus (2016-06-21),
3. 9170418 - Variable wavelength interference filter, optical module, optical analysis device, and method for manufacturing variable wavelength interference filter (2015-10-27),
4. 8746846 - Nozzle plate, discharge head, method for producing the nozzle plate, method for producing the discharge head, and discharge device (2014-06-10),
5. 8485640 - Nozzle plate, droplet discharge head, method for manufacturing the same and droplet discharge device (2013-07-16),
6. 7637601 - Droplet discharging head, droplet discharging apparatus, method for manufacturing droplet discharging head and method for manufacturing droplet discharging apparatus (2009-12-29),
7. 7581824 - Electrostatic actuator, droplet discharge head and method for manufacturing the droplet discharge head, droplet discharge apparatus, and device (2009-09-01),
8. 7536785 - Method for manufacturing a droplet ejection head (2009-05-26),
9. 7306744 - Method of manufacturing a nozzle plate (2007-12-11),
10. 7147795 - Method for surface treatment (2006-12-12),
11. 6989513 - Heat-generating element, heat-generating substrates, heat-generating substrate manufacturing method, microswitch, and flow sensor (2006-01-24),
12. 6677237 - Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them (2004-01-13),
13. 6563079 - Method for machining work by laser beam (2003-05-13),
14. 6447107 - Printing head and ink jet recording apparatus using the same (2002-09-10),
15. 6424048 - Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them (2002-07-23),

Title: Katsuji Arakawa: Innovator in Optical Technology

Introduction

Katsuji Arakawa is a prominent inventor based in Chino, Japan. He has made significant contributions to the field of optical technology, holding a total of 16 patents. His work primarily focuses on wavelength variable interference filters and electronic components.

Latest Patents

Arakawa's latest patents include a wavelength variable interference filter that features a substrate with a specific hydroxyl group concentration. This innovative filter consists of a fixed substrate, a movable substrate, and reflective films that work together to transmit light effectively. Another notable patent involves a manufacturing method for a wavelength variable interference filter, which includes a movable substrate designed with a unique groove structure. These advancements highlight his expertise in creating sophisticated optical devices.

Career Highlights

Katsuji Arakawa is associated with Seiko Epson Corporation, where he has been instrumental in developing cutting-edge electronic components. His work has not only advanced the technology but also contributed to the company's reputation as a leader in the optical industry.

Collaborations

Throughout his career, Arakawa has collaborated with notable colleagues, including Kazushige Umetsu and Jun Amako. These partnerships have fostered innovation and have been crucial in the development of his patented technologies.

Conclusion

Katsuji Arakawa's contributions to optical technology through his patents and collaborations underscore his role as a key innovator in the field. His work continues to influence advancements in electronic components and optical devices.

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