ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,567, issued on Dec. 16, was assigned to Microsoft Technology Licensing LLC (Redmond, Wash.).
"Plastic reflective waveguide manufacturing" was invented by Long Yang (Espoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plastic reflective waveguide is manufactured using a soft transfer stamp formed in a first mold using a liquid injection molding process to provide the stamp with parallel wall surfaces having a zero degree draft angle. The soft transfer stamp is placed as an insert in a second mold utilized in a multi-stage thermoplastic injection molding process. A first thermoplastic injection molding stage molds a base part of the plasti...