Gunma, Japan

Eiichi Asano

This inventor holds 23 USPTO granted patents, primarily in Semiconductor Packaging. Top assignees: Shin-Etsu Chemical Co., Ltd., Mitsubishi Denki Kabushiki Kaisha, Ciba-Geigy Corporation. Active years: 1992-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiichi Asano. Retrieved from https://idiyas.com/inventor/eiichi-asano

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


% Patents Active = 95.7

Average Co-Inventor Count = 4.9

ph-index = 6

Forward Citations = 137(Granted Patents)


Location History:

  • Niigata, JP (1992)
  • Usui-gun, JP (1998 - 2006)
  • Gunma-ken, JP (1999 - 2011)
  • Annaka, JP (2011)

Company Filing History:


Years Active: 1992-2011

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Areas of Expertise:
Semiconductor
Epoxy Resin
Encapsulation
Flip-Chip
Inorganic Filler
Light-Transmissive
High Transparency
Silica-Titania
Device Composition
Crystalline Epoxy
23 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Eiichi Asano

Introduction: Eiichi Asano, hailing from Gunma-ken, Japan, is a prominent inventor known for his contributions to the field of semiconductor technology. With a remarkable portfolio of 23 patents, Asano has made significant advancements in semiconductor encapsulating materials, showcasing his dedication to innovation in this vital sector.

Latest Patents: Among his latest patents, Asano has developed a semiconductor encapsulating epoxy resin composition designed for enhanced performance and reliability. The first patent describes an epoxy resin composition that consists of (A) a naphthalene-type epoxy resin, including specific weights of 1,1-bis(2-glycidyloxy-1-naphthyl)alkane and 1,1-bis(2,7-diglycidyloxy-1-naphthyl)alkane per 100 parts by weight of the resin, (B) a curing agent in the form of a naphthalene type phenolic resin, (C) an inorganic filler, and (D) a phosphazene compound. This composition is noted for its excellent flow properties, low coefficient of linear expansion, high glass transition temperature (Tg), minimal moisture absorption, and crack resistance during lead-free soldering. His second patent also emphasizes the significance of a naphthalene ring-containing epoxy resin and a phenolic resin, ensuring superior characteristics in semiconductor encapsulation.

Career Highlights: Asano has made impactful contributions while working at several prestigious companies. Notable among them are Shin-Etsu Chemical Co., Ltd. and Mitsubishi Denki Kabushiki Kaisha. His tenure at these organizations afforded him valuable experience and opportunities to further his research in semiconductor materials.

Collaborations: Throughout his career, Asano has collaborated with influential professionals in his field, including his coworkers Toshio Shiobara and Kazutoshi Tomiyoshi. These collaborations have facilitated knowledge exchange and fostered innovation in semiconductor technology.

Conclusion: Eiichi Asano stands out as an influential inventor in the semiconductor industry. His dedication to developing advanced encapsulating materials has not only led to numerous patents but also significantly contributed to the reliability and performance of semiconductor devices. His work exemplifies the spirit of innovation that drives progress in technology.

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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