As written, it works kind of like a pokeball - you open the vial and the creature appears at a distance within the usual range for a summon spell (25+5ft/2CL).
If by craft you mean make potions of, the answer is no. You can hand out infusions if you've got that discovery.
The extract created now persists even after the alchemist sets it down. As long as the extract exists, it continues to occupy one of the alchemist's daily extract slots.
Neither the rules for Summon spells nor the ones for Infusion should be modified, so just do it as normal. Well, Extract drinking should always be a standard, so that might change ? Not a 100% sure.
Still, an interesting idea, to be sure.First round of a major fight, everyone in the party summons tbeir own beastie ? Powerful.
Potions, yes. Which sucks that I can't.
How long do infusions last?
Infusions last as long as any of your other prepared extracts - 1 day. You can use Preserving Flasks if you want to hand out pseudo-potions, those will give the infusion an unlimited duration. Preserving Flasks can get expensive, so I'd probably ask your party members to pay for them if they want them filled regularly.