Growing community of inventors

West Windsor, NJ, United States of America

Yu-Hwa Chang

Average Co-Inventor Count = 1.67

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 46

Yu-Hwa ChangRoger Kai Lott (3 patents)Yu-Hwa ChangTrushit Oza (1 patent)Yu-Hwa ChangYu-Hwa Chang (5 patents)Roger Kai LottRoger Kai Lott (20 patents)Trushit OzaTrushit Oza (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Headwaters Technology Innovation, LLC (2 from 50 patents)

2. Axens (1 from 72 patents)

3. Headwaters Heavy Oil, LLC (1 from 14 patents)

4. Headwaters Technology Innovation Group, Inc. (1 from 1 patent)

5. Hydrocarbon Technology & Innovation, LLC (11 patents)


5 patents:

1. 11549072 - Overpressure protection in hot high pressure processing systems in multi-stage up-flow reactor systems

2. 9790440 - Methods for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker

3. 8557105 - Methods for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker

4. 8309041 - Systems for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker

5. 8034232 - Methods for increasing catalyst concentration in heavy oil and/or coal resid hydrocracker

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1/4/2026
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