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Douglas N. Datema — 2 Patents

OEOtis Elevator: 1 patents #966 of 1,840Top 55%

Bettendorf, IA: #150 of 329 inventorsTop 50%

Iowa: #6,154 of 15,303 inventorsTop 45%

Overall (All Time): #1,709,992 of 4,157,543Top 45%

2 Patents All Time

Douglas N. Datema has been granted 2 US patents while listed as an inventor at Otis Elevator. The first was granted in 1992 and the most recent in February 2024. Douglas N. Datema ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Douglas N. Datema in Bettendorf, IA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
11905721	Protective platform assembly for use during elevator installation	Kurt J. Frei	2024-02-20
5161668	Guide mechanism for passenger conveyors	Thomas Nurnberg, Richard Dean Rohret	1992-11-10

Douglas N. Datema — 2 Patents

Issued Patents All Time

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