The Institution of Structural Engineers called Apple’s “Glass Lantern” Store in Istanbul, Turkey an application of structural glass in “the purest form possible” when giving it the 2014 Supreme Award for Structural Engineering Excellence. Now, for at least a dozen-plus years, the fully transparent structure will remain purely unique—much like the rest of Apple’s glass-happy buildings.

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The Apple store in Istanbul features four 10-by-3-meter glass walls.

Today, the U.S. Patent and Trademark Office granted Apple a patent for the structure, which was designed by lauded engineering firm Eckersley O’Callaghan. The patent, filed in February 2014, is good for 14 years.

The minimalistic building is made up of four 10-by-3-meter glass walls, seamlessly joined together with a fifth panel—a lightweight ultra-thin roof made of carbon fiber reinforced plastic (CFRP).

Eckersley O’Callaghan director James O’Callaghan is listed as an inventor of the design, along with Graham Coult, Vladimir Marinov, Stefan Behling, David Summerfield, David Nelson, Rafe Bertram, Michaela Fuchs, Thomas Oberniedermayr, Lorenzo Poli, Robert Bridger and Johnathan Siegel. Foster + Partners was the architect of the project, and seele and Premier Composite Technologies were the principal contractors.

“The judges found this to be a supreme example of collaboration between engineer and fabricator to achieve an outstanding, architecturally minimalist structure,” the 2014 Structural Awards judge’s comment reads. “The use of single panes of [tempered] laminated glass to support a lightweight ultra-thin CFRP roof without connections other than structural silicone, takes structural glass technology into a new dimension. A project where only engineering excellence and attention to detail can produce a result of such simplicity and purity of expression.”

Last month, Apple was also awarded patents for its glassy store designs in Zhongjie Joy City, China and West Lake, China. The company earned a patent last year for its well-known “Glass Cube” flagship store in Manhattan and has racked up many other architectural glass patents in the past, including its various glass staircase designs, as well as its circular Shanghai store design.

“Apple is an incredible client that is fundamentally focused on innovation throughout its entire organization,” O’Callaghan told™ last month. “So being in that environment where they are supporting the development in the glass industry worldwide, we’re lucky, as that is the fuel that you need to be able to innovate. You’ve got to have the attitude of the client, but you’ve also got to have the money to be able to do it… and the willingness to do it.”

 [Check out our full interview with O’Callaghan here.]

Apple continues to push the envelope with its utilization of architectural glass. sedak, a subsidiary of seele, recently finished producing more than 800 oversized facade lites with dimensions of nearly 46 by 10½ feet for the new Apple Campus 2.

“The quality and size of the panes are beyond anything ever realized in the world,” Apple CEO Tim Cook said at the time.