Growing community of inventors

Lake Balboa, CA, United States of America

Peter Spiegel

Average Co-Inventor Count = 1.02

ph-index = 12

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 = 412

Peter SpiegelMarsha Kent (1 patent)Peter SpiegelPeter Spiegel (25 patents)Marsha KentMarsha Kent (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sylmark Holdings Limited (24 from 66 patents)

2. Slymark Holdings Limited (1 from 1 patent)


25 patents:

1. D643261 - Knife

2. D643259 - Knife

3. D643263 - Knife

4. D643260 - Knife

5. D643258 - Knife

6. D643264 - Knife

7. D642873 - Knife

8. D642872 - Knife

9. D588686 - Air purifier

10. D588759 - Vacuum cleaner

11. D588251 - Air purifier

12. D584922 - Coffee maker

13. 7479175 - Safety lid for air conditioning device and method of use

14. D578197 - Air purifier

15. D577944 - Coffee maker

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as of
1/13/2026
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