US Patent 9901151 Card holder embedded into a mobile device case

An improved mobile device case with an embedded card holder is provided. The mobile device case may include a card slot recessed into the back of the case and fitted for insertion of a card, such as a credit card. A flexural binder formed from opposite-facing surfaces molded as part of the case flexes the card widthwise and lengthwise such that the forces resisting flexure exerted by the flexed card hold the card in place. One opposite-facing surface, a retainer, may be connected to non-recessed areas of the back of the case that extends over the recessed slot. Another opposite-facing surface is a raised edge on the recessed surface of the interior back of the case bordering both sides and the rear of the recessed slot.