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For the Inventor, By the Inventor

Strongsville, OH, United States of America

Ching-Feng Chang

This inventor holds 16 USPTO granted patents and 3 published patent applications and 7 EPO patents, primarily in Carbon Materials. Top assignees: Graftech International Holdings Inc., Ucar Carbon Company Inc., Union Carbide Corporation and Plastics Company Inc.. Active years: 1989-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ching-Feng Chang. Retrieved from https://idiyas.com/inventor/ching-feng-chang

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

Calculating rank
USPTO Granted Patents = 16 

% Patents Active = 93.8

 

Average Co-Inventor Count = 4.2

ph-index = 3

Forward Citations = 22(Granted Patents)


Location History:

  • Strongville, OH (US) (2013 - 2014)
  • Strongsville, OH (US) (1989 - 2019)

Company Filing History:

goldMedal13 out of 107 
 
Graftech International Holdings Inc.
 patents
silverMedal2 out of 24 
 
Ucar Carbon Company Inc.
 patents
bronzeMedal1 out of 1 
 
Union Carbide Corporation and Plastics Company Inc.
 patent

Years Active: 1989-2019

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Areas of Expertise:
Needle Coke
Carbon Fibers
Lignin
Coal Tar
Thermal Insulation
Pitch-Based Materials
CTE Graphite Electrodes
Carbon Residue
Reduced Puffing
High Coking Value
Decant Oil
Organohalosilanes
16 patents (USPTO):Explore Patents
1. 10253264 - Method of producing needle coke for low CTE graphite electrodes (2019-04-09),
2. 10011492 - Carbon products derived from lignin/carbon residue (2018-07-03),
3. 9777221 - Method of producing needle coke for low CTE graphite electrodes (2017-10-03),
4. 9758905 - Process of making carbon fibers derived from lignin/carbon residue (2017-09-12),
5. 9683313 - Method of making carbon fibers from lignin (2017-06-20),
6. 8828348 - Reduced puffing needle coke from coal tar (2014-09-09),
7. 8747651 - High coking value pitch (2014-06-10),
8. 8658315 - Reduced puffing needle coke from decant oil (2014-02-25),
9. 8530094 - Reduced puffing needle coke from coal tar distillate (2013-09-10),
10. RE42775 - Isotropic pitch-based materials for thermal insulation (2011-10-03),
11. 8007660 - Reduced puffing needle coke from decant oil (2011-08-30),
12. 8007659 - Reduced puffing needle coke from coal tar distillate (2011-08-30),
13. 8007658 - Reduced puffing needle coke from coal tar (2011-08-30),
14. 7150837 - Isotropic pitch-based materials for thermal insulation (2006-12-19),
15. 6800364 - Isotropic pitch-based materials for thermal insulation (2004-10-05),

Title: Innovations by Ching-Feng Chang: Pioneering Graphite Technologies

Introduction

Ching-Feng Chang, an innovative inventor based in Strongsville, OH, has made significant contributions to the field of materials science, particularly in graphite technologies. With a remarkable portfolio, he holds 16 patents that showcase his expertise and dedication to advancing industry standards.

Latest Patents

Chang's recent patents demonstrate his focus on developing efficient methods for producing high-quality graphite electrodes. His latest innovations include:

1. **Method of Producing Needle Coke for Low CTE Graphite Electrodes** - This method involves producing low CTE (coefficient of thermal expansion) graphite electrodes from needle coke derived from a coal tar distillate material with a relatively high initial boiling point.

2. **Carbon Products Derived from Lignin/Carbon Residue** - This invention involves a precursor containing at least five percent of lignin-based coke, having specific d002 spacing characteristics for making graphite. It discusses methods for creating a green/graphite article by mixing coke from various sources and shaping the mixture before carbonization and graphitization.

Career Highlights

Throughout his career, Ching-Feng Chang has been associated with reputable companies known for their advancements in carbon technologies. He has worked with GrafTech International Holdings Inc. and Ucar Carbon Company Inc., where his contributions have been instrumental in research and development.

Collaborations

In addition to his industrial achievements, Chang has collaborated with esteemed colleagues Irwin Charles Lewis and Douglas J. Miller. Their collective efforts have contributed to breakthroughs in the methods of producing specialized carbon materials, complementing Chang's innovative approach.

Conclusion

Ching-Feng Chang continues to impact the field of graphite technology through his innovative methods and collaborations. His extensive patent portfolio underscores his commitment to improvements and advancements in materials science, making him a leading figure in the industry.

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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