Average Co-Inventor Count = 1.41
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 832,891 patents)
2. Jernstrom Design Workshop, Inc. (1 from 1 patent)
4 patents:
1. 6508243 - Apparatus and method for practicing hitting a baseball
2. 6050907 - Apparatus and method for practicing hitting a baseball
3. 4323238 - Action toy requiring space perception and eye/hand coordination
4. 4085540 - Mechanical toy athlete