Average Co-Inventor Count = 3.75
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. Great Lakes Chemical (Europe) Gmbh (3 from 17 patents)
2. Enichem Synthesis S.p.a (1 from 104 patents)
3. Ministero Dell'universita E Della Ricerca Scientifica E Tecnologica (1 from 43 patents)
4. Ministero Dell 'Universita'e Della Ricerca Scientifica E Technologica (1 from 22 patents)
5. Great Lakes Chemical Italia S.r.l. (1 from 10 patents)
7 patents:
1. 7262294 - Photochromatic pyrano-1,3-oxazinonaphthalene derivatives
2. 6605658 - Stabilizing mixtures for organic polymers comprising a pyrazolone, an organic phosphite or phosphonite and a hindered phenol
3. 6414057 - Photochromatic compounds, process for their preparation and their use in polymeric materials
4. 5688846 - Spiro-pyranic compounds endowed with photochromic characteristics
5. 5543533 - Photochromic products and method for their preparation
6. 5532361 - Spiro-pyranic compounds endowed with photochromic characteristics
7. 5242624 - Stabilizing mixture for compounds having a photochromatic activity