Average Co-Inventor Count = 1.69
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. Ilford Imaging Switzerland Gmbh (14 from 37 patents)
2. Ilford Ag (2 from 8 patents)
3. Ilford Limited (1 from 30 patents)
4. Dfi Chem Gmbh (1 from 1 patent)
5. Lanxess Deutschland Gmbh (383 patents)
6. Rex-tone Industries Ltd (1 patent)
18 patents:
1. 10259942 - Black trisazo dyes, their preparation and their use
2. 8834620 - Black disazo dyes, their preparation and use
3. 8361168 - Black trisazo dyes, their preparation and their use
4. 7842801 - Phthalocyanine dyes and their preparation and use
5. 7828886 - Anthrapyridone dyes and their preparation and use
6. 7632345 - Phthalocyanine dyes and their preparation and use
7. 7060105 - Copper complex monazo dyes and their preparation and use
8. 6929688 - Monoazo dyes and their preparation and use
9. 6709502 - Monoazo dyes and their preparation and use
10. 6589637 - Recording sheets for ink jet printing
11. 6562115 - Azo dyes and their preparation and use
12. 6320031 - Monoazo dyes and their preparation and use
13. 6068687 - Azo dyes and their preparation and use
14. 5844100 - Ink compositions containing azo dyes for ink jet printing
15. 5824785 - Dyes for ink jet printing