Obviousness

The user has asked for an obviousness analysis of US patent 11961422 under 35 U.S.C. § 103, using prior art references identified in the "PTAB challenges" section of the provided patent text. These references are US Patent Publication No. 2003/0118804 to Furuya, US Patent No. 6,696,150 to Schramm, and US Patent No. 6,211,093 to Takasu.

To perform this analysis, I first need to understand the teachings of each identified prior art reference. Since the content of these specific references is not detailed in the provided text, I will perform a search for each patent to gather the necessary information.