Growing community of inventors

Munich, Germany

Erwin Grassl

Average Co-Inventor Count = 1.91

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.

Forward Citations = 77

Erwin GrasslErwin Awakowicz (3 patents)Erwin GrasslHermann Hansbauer (2 patents)Erwin GrasslPeter Kleine (1 patent)Erwin GrasslKurt Schiller (1 patent)Erwin GrasslRudolf Waechtler (1 patent)Erwin GrasslErwin Grassl (7 patents)Erwin AwakowiczErwin Awakowicz (9 patents)Hermann HansbauerHermann Hansbauer (3 patents)Peter KleinePeter Kleine (7 patents)Kurt SchillerKurt Schiller (3 patents)Rudolf WaechtlerRudolf Waechtler (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Siemens Aktiengesellschaft (7 from 30,040 patents)


7 patents:

1. 4839921 - Telephone station comprising an optical display device

2. 4810066 - Cover for telecommunications equipment

3. 4794242 - Chip card reader

4. 4731836 - Telephone set for table-top and wall operation

5. 4717817 - Chip card reader

6. 4634810 - Station for the accommodation of a chargeable cordless telephone

7. 4318587 - Electrically actuated switch for light waveguides

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as of
12/21/2025
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