Average Co-Inventor Count = 2.40
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. Hoffmann & Co. Elektrokohle Gesellschaft Mbh (3 from 4 patents)
2. Hoffmann & Co. Elektrokohle Kg (2 from 2 patents)
3. Hoffman & Co. Elektrokohle Gesellschaft M.b.h (1 from 1 patent)
6 patents:
1. 5285126 - Collector shoe and method for producing it
2. 5263562 - Carbon brush for collector
3. 5193656 - Collector shoe for collector and process for producing it
4. 5189903 - Sliding strip for collector with rupture detection device
5. 5152380 - Collector shoe for collector and process for producing it
6. 5114351 - Sliding contact arrangement for carbon brushes