Whose name is Minkowski 92 bearing?
Rudolf Minkowski.

Its not likely to be the mathematician, Hermann. Nor the physiologist Oskar.  There's only one Minkowski who was an observational astronomer.

The paper describing M1-92 was https://iopscience.iop.org/article/10.1086/125855

The 2006 paper on Minkowski's object (Croft et al) cites Minkowski, R. 1958, PASP, 70, 143