Beverage filtration device

A beverage filtration device, comprising:

• a lid body having an internal housing configured to hold an ion exchange resin-filed cartridge therein, the lid body having a connection end and a top end having an opening therein;
• and
• a stem body, the stem body including:
• a cap region configured to couple to the connection end of the lid body to form a liquid-tight seal coupling there-between,
• a collar, wherein a first portion of a wall of the collar is sized to fit inside a mouth of a beverage container and a second portion of the wall sized to be located outside of the mouth,
• a beverage conduit spanning the collar, wherein a first opening of the conduit opens to the coupling between the cap region, the conduit extends from the coupling between the cap region and the connection end, and a second opening of the conduit opens to and is located in an interior of the beverage container and
• a stem body air tube extending through the collar, wherein:
• a proximal opening of the stem body air tube opens to an air vent hole located in the second portion of the wall of the collar, and
• a distal opening of the stem body air tube opens to the interior of the beverage container,
• wherein the second portion of the wall of the collar includes a housing that defines an air reservoir ending at the air vent hole, wherein the air vent hole is shaped as circular opening with a minor segment removed.

A beverage filtration device, comprising:

• a lid body having an internal housing configured to hold an ion exchange resin-filed cartridge therein, the lid body having a connection end and a top end having an opening therein;
• and
• a stem body, the stem body including:
• a cap region configured to couple to the connection end of the lid body to form a liquid-tight seal coupling there-between,
• a collar, wherein a first portion of a wall of the collar is sized to fit inside a mouth of a beverage container and a second portion of the wall sized to be located outside of the mouth,
• a beverage conduit spanning the collar, wherein a first opening of the conduit opens to the coupling between the cap region, the conduit extends from the coupling between the cap region, and the connection end, and a second opening of the conduit opens to and is located in an interior of the beverage container and
• a stem body air tube extending through the collar, wherein:
• a proximal opening of the stem body air tube opens to an air vent hole located in the second portion of the wall of the collar, and
• a distal opening of the stem body air tube opens to the interior of the beverage container, wherein the second portion of the wall of the collar includes a housing that defines an air reservoir ending at the air vent hole, the housing has an interior surface that negatively slopes from the air vent hole towards a proximal opening of the stem body air tube to thereby drain portions of a beverage into the stem body air tube after pouring the beverage from the opening in the lid body and returning the device to an upright position.