Average Co-Inventor Count = 3.00
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. Southern California Gas Company (2 from 20 patents)
2. Little Factories, Inc. (1 from 1 patent)
3 patents:
1. 5131320 - Image-forming griddle
2. 4333524 - High efficiency furnace
3. 4249594 - High efficiency furnace