Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KK

Kay Koester — 5 Patents

Siemens Aktiengesellschaft: 3 patents #4,667 of 22,248Top 25%
SGSiemens Mobility Gmbh: 2 patents #92 of 502Top 20%
Fredersdorf, DE: #4 of 12 inventorsTop 35%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Kay Koester has been granted 5 US patents while listed as an inventor at Siemens Aktiengesellschaft. The first was granted in 2014 and the most recent in January 2020. Kay Koester ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Kay Koester in Fredersdorf, DE.

Patents per Year

Patents granted per year, 2014 to 2020Bar chart with a peak of 2 patents in 2017.peak 22014: 1 patents20142017: 2 patents20172019: 1 patents20192020: 1 patents2020

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10525992 Light signal Rolf Eckl, Zeljko Marincic 2020-01-07
10328958 Light Signal Rolf Eckl, Zeljko Marincic 2019-06-25
9656681 Circuit arrangement for revealing light signal errors Rolf Eckl 2017-05-23
9562952 Method and apparatus for revealing errors in the case of a light signal Rolf Eckl 2017-02-07
8702282 Light signal Joerg Birkholz, Rolf Eckl, Uwe Frost, Zeljko Marincic, Norbert Poepplow 2014-04-22 $743,000