This mod adds infinite research for the characters logistic request slots.

Each tier adds another 6 slots.

The pricing model follows vanilla Factorio's exponential pricing model for infinite tiered techs. Each tier costs double the amount of science (1000, 2000, 4000, 8000, ... ) and space science packs are required.

If you think this is too expensive and you want a more reasonable pricing model, look here: https://mods.factorio.com/mod/ImpatientsCharacterLogisticSlotsInfiniteResearchCheapVersion