Average Co-Inventor Count = 2.11
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. Carl-zeiss-stiftung (1 from 702 patents)
2. Carl-zeiss-stiftung, Heidenheim/brenz (1 from 57 patents)
3. Marwitz & Hauser (1 from 7 patents)
4. Rohm-optik Gmbh (1 from 1 patent)
4 patents:
1. D330571 - Laser-protection spectacles
2. 5146623 - Safety spectacles against laser radiation
3. 5133595 - Length-adjustable spectable temple
4. 4529279 - Eyeglass frame