Growing community of inventors

Evanston, IL, United States of America

Penelope C Yao

Average Co-Inventor Count = 3.00

ph-index = 18

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 = 570

Penelope C YaoHenry Young Chin (16 patents)Penelope C YaoDavid L Brown (16 patents)Penelope C YaoJames A Ellers (2 patents)Penelope C YaoLoren E Doppelt (1 patent)Penelope C YaoJoseph J Ergun (1 patent)Penelope C YaoKuoyong Huang (1 patent)Penelope C YaoFred T Mattern (1 patent)Penelope C YaoMarvin Wayne Olds (1 patent)Penelope C YaoPenelope C Yao (19 patents)Henry Young ChinHenry Young Chin (59 patents)David L BrownDavid L Brown (16 patents)James A EllersJames A Ellers (3 patents)Loren E DoppeltLoren E Doppelt (9 patents)Joseph J ErgunJoseph J Ergun (9 patents)Kuoyong HuangKuoyong Huang (7 patents)Fred T MatternFred T Mattern (3 patents)Marvin Wayne OldsMarvin Wayne Olds (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tektronix, Inc. (17 from 2,727 patents)

2. Textronix, Inc. (1 from 7 patents)


19 patents:

1. D416936 - Solid ink stick for a color printer

2. D413625 - Solid ink stick for a color printer

3. D412527 - Solid ink stick for a color printer

4. D412528 - Solid ink stick for a color printer

5. D410026 - Solid ink stick for a color printer

6. D409235 - Solid ink stick for a color printer

7. D408849 - Solid ink stick for a color printer

8. D407745 - Solid ink stick for a color printer

9. D407742 - Solid ink stick for a color printer

10. D407743 - Solid ink stick for a color printer

11. D407112 - Solid ink stick for a color printer

12. D407109 - Solid ink stick for a color printer

13. D407111 - Solid ink stick for a color printer

14. D407110 - Solid ink stick for a color printer

15. D403699 - Solid ink stick for a color printer

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as of
12/12/2025
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