Roger Sieg — 4 Patents at Basf Se

Roger Sieg has been granted 4 US patents while listed as an inventor at Basf Se. The first was granted in 2022 and the most recent in May 2025. Roger Sieg ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Roger Sieg in Ludwigshafen, DE.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
12305110	Antifreeze agents and coolants for fuel cells, storage batteries and batteries	Harald Dietl, Bayram Aydin	2025-05-20
12077708	Heat transfer liquid for cooling lithium storage batteries	Harald Dietl	2024-09-03
11702580	Coolant for cooling systems in electric vehicles having fuel cells and/or batteries containing azole derivatives and additional corrosion protectants	Harald Dietl	2023-07-18
11248155	Coolant for cooling systems in electric vehicles having fuel cells and/or batteries containing azole derivatives and additional corrosion protectants	Harald Dietl	2022-02-15

Roger Sieg — 4 Patents

Issued Patents All Time

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