Average Co-Inventor Count = 1.55
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.
Company Filing History:
1. Other (3 from 832,812 patents)
2. Alfred E. Hall (1 from 1 patent)
4 patents:
1. 4915393 - Card game method
2. 4846480 - Card deck
3. 4703573 - Visual and audible activated work and method of forming same
4. 4656469 - Activated work and method of forming same