Average Co-Inventor Count = 1.33
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. Parma Corporation (4 from 34 patents)
4 patents:
1. 5653505 - Chair and mechanism with restrained free rocking and gliding movement
2. 5427433 - Rocking, gliding chair and mechanism
3. 5346277 - Foldable headrest mechanism
4. 4691961 - Recliner with headrest