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For the Inventor, By the Inventor

Osaka, Japan

Takashi Watsuji

This inventor holds 13 USPTO granted patents and 2 published patent applications and 4 EPO patents. Top assignees: Toyo Aluminium Kabushiki Kaisha, Toyo Aluminum Kabushiki Kaisha, Sumitomo Electric Industries, Limited. Active years: 1994-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Watsuji. Retrieved from https://idiyas.com/inventor/takashi-watsuji

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

USPTO Granted Patents = 13 

% Patents Active = 69.2

 

Average Co-Inventor Count = 3.0

ph-index = 4

Forward Citations = 58(Granted Patents)


Location History:

  • Omi-Hachiman, JP (1995)
  • Youkaichi, JP (2002)
  • Yokaichi, JP (1999 - 2008)
  • Osaka, JP (1994 - 2014)

Company Filing History:

goldMedal9 out of 119 
 
Toyo Aluminium Kabushiki Kaisha
 patents
silverMedal3 out of 22 
 
Toyo Aluminum Kabushiki Kaisha
 patents
bronzeMedal2 out of 10,641 
 
Sumitomo Electric Industries, Limited
 patents
4. 1 out of 25,954 
 
Sharp Kabushiki Kaisha Corporation
 patents
5. 1 out of 4 
 
Toyo Aluminum K.k.
 patents
6. 1 out of 38,912 
 
Toyota Jidosha Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1994-2014

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13 patents (USPTO):Explore Patents
1. 8877100 - Paste composition and solar cell element using the same (2014-11-04),
2. 8197718 - Paste composition and solar cell element using the same (2012-06-12),
3. 7938988 - Paste composition and solar cell element using the same (2011-05-10),
4. 7879262 - Aluminum paste composition and solar cell element using the same (2011-02-01),
5. 7850789 - Pasty composition for aluminum brazing, aluminum-containing member coated with the same, and method for brazing aluminum-containing members with the same (2010-12-14),
6. 7380700 - Paste composition for brazing and brazing method using the same (2008-06-03),
7. 7368657 - Paste composition and solar cell employing the same (2008-05-06),
8. 6497770 - Flux-containing compositions for brazing aluminum, films and brazing method thereby (2002-12-24),
9. 6409074 - Flux compositions for brazing aluminum, their films and brazing method (2002-06-25),
10. 6203628 - Flux compositions for brazing aluminum, their films and brazing method (2001-03-20),
11. 5989734 - Aluminum product having metal diffusion layer, process for producing the (1999-11-23),
12. 5405576 - Hypereutectic aluminum-silicon alloys produced by powder metallurgy (1995-04-11),
13. 5366691 - Hyper-eutectic aluminum-silicon alloy powder and method of preparing the (1994-11-22),

Title: The Innovative Contributions of Takashi Watsuji

Introduction

Takashi Watsuji is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of paste compositions for solar cell elements. With a total of 13 patents to his name, Watsuji's work has had a considerable impact on the efficiency and reliability of solar energy systems.

Latest Patents

Watsuji's latest patents include a paste composition and solar cell element utilizing the same. The first patent describes a paste composition designed for forming an electrode on a silicon semiconductor substrate. This composition contains aluminum powder, an organic vehicle, and a hydroxide. The innovative paste composition is applicable in solar cell elements, where the electrode is formed by applying the paste on the silicon semiconductor substrate and subsequently firing it. Another patent focuses on improving the adhesive properties of a backside electrode while preventing the aluminum electrode layer from exfoliating. This paste composition also comprises aluminum powder, an organic vehicle, and a tackifier, ensuring a robust electrode formation on the silicon substrate.

Career Highlights

Throughout his career, Takashi Watsuji has worked with notable companies, including Toyo Aluminium Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in materials science and semiconductor technology, leading to his innovative patent developments.

Collaborations

Watsuji has collaborated

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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