Average Co-Inventor Count = 4.09
ph-index = 3
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 (2 from 832,891 patents)
2. Maeda Corporation Limited (2 from 14 patents)
3. Mamoru Kawaguchi and Maeda Corporation (1 from 1 patent)
3 patents:
1. 5394659 - Openable and closeable roof construction
2. 5371983 - Dome shaped roof structure
3. 5257485 - Openable and closeable roof construction