A great deal of how Jan Hammer comes across on synth leads is not as much in the patch as how he bends his notes.
Jan Hammer uses pitch inflections that are common to the guitar.
Although he's said that he doesn't make a conscious effort to "imitate" the guitar, his inflections and phrasing invokes the instrument.
One must also keep in mind that he didn't always use the Mini by itself, but
effects and modules were appended to it. Among them were flanger and
His solo on "Led Boots" from Jeff Beck's Wired brings this to mind.
There were many "plucky" lead sounds, commonly played on the Minimoog during the seventies, with that guitar-like flavor.
One generic setting you could use for this type of patch is:
Osc 1: 10% pulse, Oct: 8' or 4' , mixer vol: 9
Osc 2: Saw, Oct: 8' or 4", mixer vol: 2.5, freq: min or no beating.
Filter res: 0, freq:about 150Hz, FEG amt: +3.3, mode: 4-pole LP, kb amt: 0
FEG A: min, D: 6, S: 5 (or 0), R:=D
AEG A: min D: 5, S: 9, R:=D, Trigger: Single, Glide: Off
LFO rate: 5.9Hz, Wheel amt: 1.9, Dest: pitch, Source: vibrato-trill or trill.
You can find your own variations from there. Hope that helps.