The Fortified Opaque Infill™ — An Improved Insulated Panel
At its core, Fortified Opaque Infill™ is defined by rapid build efficiency (see Figure 11 of the granted patent) and its concealed fastening system—the patented breakthrough that locks panels in place without exposing weak points. The airflow and interstitial-cavity logic disclosed first in Figure 9B of U.S. Patent No. 10,329,758 B2 (first published April 24, 2018) and is further disclosed in Figures 12–15 of Continuation Application No. 16/452,226. Conceived in mid-2016 and built soon after—in January 2017 on Long Island—the system reached completeness in its essential form. Only minor refinements followed, confirming that the disclosures carried the enclosure from conception to a fully realized, field-ready system with a viable interstitial cavity capable of promoting airflow with little resistance or pressure drop.
PortalWall® and Industry Response
The foundation was secured with U.S. Patent No. 10,329,758 B2 (filed April 24, 2017; issued June 25, 2019). That patent set the stage—disclosing water-draining spandrel assemblies, air passages, and moisture/thermal separation that redefined how façades could function. After the grant, multiple continuations based on the Figure 9B disclosures advanced the design—integrating the enclosure logic with mechanical interface details—during the summer of 2019, all filed with the USPTO and published soon thereafter.
Safety First
PortalWall® is the only truly buildable system because it integrates fire safety at its core. The Water Draining Spandrel Assembly (WDSA™) functions as a natural fire break—a HARD STOP at every floor line. Without that, continuous pipes or shafts become chimneys, carrying not only air but also fire and smoke from floor to floor.
Unified Performance
PortalWall® alone unites energy, airflow, thermal sinks, and life-safety in one enclosure system—protected, proven in concept, and ready for real-world construction.
© 2025 Yonatan Zvi Margalit. All rights reserved.
