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For the Inventor, By the Inventor

Iwakuni, Japan

Tomoaki Shimoda

This inventor holds 62 USPTO granted patents, primarily in Polycarbonate Production (CPC class 5281). Top assignees: General Electric Company, Ge Plastics Japan Ltd., Mitsui Petrochemical Industries, Ltd.. Active years: 1990-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoaki Shimoda. Retrieved from https://idiyas.com/inventor/tomoaki-shimoda

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

USPTO Granted Patents = 62

% Patents Active = 93.5

Average Co-Inventor Count = 3.3

ph-index = 17

Forward Citations = 650(Granted Patents)

Forward Citations (Not Self Cited) = 618(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Waki, JP (1990 - 1991)
  • Yamaguchi, JP (1991 - 1994)
  • Kuga, JP (1991 - 1995)
  • Iwakuni, JP (1994 - 1997)
  • Kuga-gun, JP (1997)
  • Moka, JP (1997 - 1999)
  • Chiba Prefecture, JP (2000)
  • Ichihara, JP (1999 - 2006)

Company Filing History:

goldMedal41 out of 52,387 
 
General Electric Company
 patents
silverMedal15 out of 35 
 
Ge Plastics Japan Ltd.
 patents
bronzeMedal4 out of 1,008 
 
Mitsui Petrochemical Industries, Ltd.
 patents
4. 1 out of 1 
 
Ge Plastics, Japan, Ltd. (Gep)
 patent
5. 1 out of 1 
 
General Electric Plastics Japan
 patent

Years Active: 1990-2006

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Areas of Expertise:
Polycarbonate
Recycling
Optical Applications
Manufacturing Method
Polycondensation
Copolycarbonate
Thermosetting Resin
Heat Stability
Aromatic Carbonates
Static Charge Reduction
Catalyst Control
Resin Composition
62 patents (USPTO):Explore Patents
1. 7112645 - Polycarbonate composition and method of making thereof (2006-09-26),
2. 7105632 - Recycle method for polycarbonate resin waste (2006-09-12),
3. 6797803 - Recycle process for polycondensation resins (2004-09-28),
4. 6790927 - Optical polycarbonate and applications thereof (2004-09-14),
5. 6720404 - Polycarbonates for optical use, and their applications (2004-04-13),
6. 6635710 - Manufacturing method for polycarbonate (2003-10-21),
7. 6620902 - Process for preparing polycarbonate and apparatus for preparing polycarbonate (2003-09-16),
8. 6562433 - Method for the preparation of polycarbonate with reduced levels of fries (2003-05-13),
9. 6525163 - Process for the production of polycarbonate (2003-02-25),
10. 6458914 - Method for manufacturing dialkyl carbonate (2002-10-01),
11. 6455667 - Method for manufacturing polycarbonate (2002-09-24),
12. 6340738 - Continuous method for manufacturing polycarbonate (2002-01-22),
13. 6339138 - Method of manufacturing polycarbonates (2002-01-15),
14. 6303735 - Polycarbonate production method (2001-10-16),
15. 6294642 - Continuous method for manufacturing polycarbonate (2001-09-25),

Title: Tomoaki Shimoda: A Leading Innovator in Polycarbonate Technologies

Introduction

Tomoaki Shimoda, based in Iwakuni, Japan, is a prominent inventor with a remarkable portfolio of 62 patents. His work predominantly focuses on polycarbonate compositions and recycling methods, contributing significantly to advancements in material sciences.

Latest Patents

Among his latest innovations, two notable patents stand out. The first is a Polycarbonate composition and method of making thereof. This composition includes a careful balance of chloride, sulfate, phosphate, and other organic compounds, achieving specific molecular weight characteristics and melt flow rates critical for various applications. The second patent is a Recycle method for polycarbonate resin waste, which presents a novel approach to recycling polycarbonate using melt polycondensation. This method aims to improve sustainability by transforming polycarbonate waste and oligomers back into usable materials through a transesterification process.

Career Highlights

Tomoaki Shimoda has held positions in notable companies such as General Electric Company and GE Plastics Japan Ltd., where he honed his expertise in polymer technologies. His contributions have not only advanced the field of polycarbonates but also promoted eco-friendly practices in the industry.

Collaborations

Throughout his career, Shimoda has collaborated with esteemed researchers, including Takeshi Sakashita and Takashi Nagai. These partnerships have facilitated the exchange of ideas and further innovation in polycarbonate technologies.

Conclusion

Tomoaki Shimoda's extensive work in polycarbonate compositions and recycling methods underscores his role as a leading innovator in the field. His patents not only reflect his technical expertise but also his commitment to advancing sustainable practices in material science. As innovations continue to evolve, Shimoda's contributions will undoubtedly impact the industry for years to come.

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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