A pair of chemical engineers demonstrate a capsule that can keep liquids hot for a longer period of time; a mom has an idea for cleaning stuffed toys; two Oakland men try to drum up interest in their garden-wall system; and a married couple dish out ice cream made with liquid nitrogen. Also: an update on a jewelry business from Season 3.

Episode Viewers and Ratings

Season 4 Episode 13 of Shark Tank resulted in a 2.00 rating in the 18-49 demographic.

Shark Tank Season 4 Episodes...

• s04e01 - Season 4, Episode 1
• s04e02 - Season 4, Episode 2
• s04e03 - Season 4, Episode 3
• s04e04 - Season 4, Episode 4
• s04e05 - Season 4, Episode 5
• s04e06 - Season 4, Episode 6
• s04e07 - Season 4, Episode 7
• s04e08 - Season 4, Episode 8
• s04e09 - Season 4, Episode 9
• s04e10 - Season 4, Episode 10
• s04e11 - Season 4, Episode 11
• s04e12 - Season 4, Episode 12
• s04e13 - Season 4, Episode 13
• s04e14 - Season 4, Episode 14
• s04e15 - Season 4, Episode 15
• s04e16 - Season 4, Episode 16
• s04e17 - Season 4, Episode 17
• s04e18 - Season 4, Episode 18
• s04e19 - Season 4, Episode 19
• s04e20 - Season 4, Episode 20
• s04e21 - Season 4, Episode 21
• s04e22 - Season 4, Episode 22
• s04e23 - Season 4, Episode 23
• s04e24 - Season 4, Episode 24
• s04e25 - Season 4, Episode 25
• s04e26 - Season 4, Episode 26

Shark Tank Show Summary

Shark Tank follows aspiring entrepreneurs as they present various business ideas to moguls (known as "the sharks") in hopes of landing an investment in their ideas. Each week, ambitious entrepreneurs present their breakthrough business concepts to ruthless investors to convince them to invest in the concept.