Average Co-Inventor Count = 1.00
ph-index = 1
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. Witteman + Co. (2 from 52 patents)
2 patents:
1. PP18234 - Helenium plant named 'Ruby Tuesday'
2. PP18206 - Helenium plant named 'Double Trouble'