Growing community of inventors

Los Altos, CA, United States of America

Hsuan Chang

Average Co-Inventor Count = 1.20

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 = 163

Hsuan ChangDennis A Grahn (2 patents)Hsuan ChangH Craig Heller (1 patent)Hsuan ChangHorace Craig Heller (1 patent)Hsuan ChangHsuan Chang (8 patents)Dennis A GrahnDennis A Grahn (18 patents)H Craig HellerH Craig Heller (18 patents)Horace Craig HellerHorace Craig Heller (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Honda Motor Co., Ltd. (8 from 21,893 patents)

2. Leland Stanford Junior University (2 from 5,309 patents)


8 patents:

1. 9186991 - Thermal grill for body cooling and driver alertness

2. 9174652 - System and method for reducing driving skill atrophy

3. 9041542 - System and method for detecting and preventing drowsiness

4. 9024764 - Method and apparatus for manipulating driver core temperature to enhance driver alertness

5. 8963724 - System and method for arousing a drowsy driver without drowsiness detection

6. 8917182 - System and method for detecting and preventing drowsiness

7. 8831836 - Thermal grill for body cooling and driver alertness

8. 8731736 - System and method for reducing driving skill atrophy

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as of
12/29/2025
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