Growing community of inventors

El Segundo, CA, United States of America

Charles E Grafton

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 = 121

Charles E GraftonGlenn Yu (1 patent)Charles E GraftonPaul R Wilson (1 patent)Charles E GraftonCharles E Grafton (6 patents)Glenn YuGlenn Yu (12 patents)Paul R WilsonPaul R Wilson (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,812 patents)

2. Mattel, Inc. (2 from 1,702 patents)

3. Lanard Toys Limited (2 from 28 patents)


6 patents:

1. 8845387 - Expandable play set

2. D539356 - Bubble weed trimmer toy

3. D457925 - Toy weed trimmer

4. 5924906 - Pin connector for construction toy set

5. 5813932 - Game footbag having improved skin and filler

6. 5807197 - Footbag having photoluminescent filler and both opaque and light

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as of
12/17/2025
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