Looking for a family member

Looking for a brother of my dad who left Poland and arrived to USA,but i don't know which year

My father was Lipinski Alojzy,Born 18 October 1910 in Najmusy,Pomeranian voivodeship. To his death he was living in Starogard Gdanski,Najmusy,Pomeranian voivodeship

The only thing i remember about my dad's brother is his name probably was Jan (John)

Lastly he visited me and my father was in 1979-1980.

Thanks in advance for all the help