Average Co-Inventor Count = 3.67
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. Unilever Home and Personal Care USA, Division of Conopco, Inc. (4 from 755 patents)
2. Helene Curtis, Inc. (1 from 140 patents)
3. Unilever Home & Personal Care USA (1 from 37 patents)
6 patents:
1. 6770103 - Method and composition for the gradual permanent coloring of hair
2. 6758867 - Gradual permanent coloring of hair using dye intermediates in a shampoo base
3. 6736860 - Gradual permanent coloring of hair using dye intermediates dissolved in alkaline water with fatty alcohol
4. 6726729 - Gradual permanent coloring of hair using dye intermediates in a shampoo base
5. 6709468 - Gradual permanent coloring of hair using dye intermediates in alkaline water which contains quaternary ammonium compounds
6. 5968486 - Composition for lightening and highlighting hair