This inventor holds 2 USPTO granted patents and 1 published patent application, plus 4 CIPO patents and 3 EPO patents. Top assignee: Koenig & Bauer-Aktiengesellschaft. Active years: 2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2025
Title: Innovations by Inventor Robert Stewart
Introduction
Robert Stewart is a notable inventor based in La Tour-de-Peilz, Switzerland. He has made significant contributions to the field of security documents, holding a total of 2 patents. His work focuses on enhancing the security features of documents through innovative designs.
Latest Patents
One of Robert Stewart's latest patents is a security document that includes a transparent window formed in the substrate. This security document features a substrate with a transparent window, where a micro-optical structure containing microlenses is arranged on one side. A first print image is placed on the opposite side of the substrate, featuring image elements with a dot size or line thickness smaller than the lens width of the microlenses. Additionally, a layer is positioned on part of the first print image, allowing for a second print image to be aligned with the micro-optical structure after folding the substrate. This innovative design ensures that the second print image becomes visible when viewed from the direction of the micro-optical structure.
Another patent by Stewart also focuses on a security document with a transparent window. In this design, a micro-optical structure with microlenses is arranged on one side of the substrate, while a first print image is located on the opposite side. A layer covers part of the first print image, allowing electromagnetic radiation within a specific wavelength range to pass through. The second print image is arranged on this layer, ensuring that it can be aligned with the micro-optical structure after a folding process, making it visible and recognizable.
Career Highlights
Robert Stewart is currently associated with Koenig & Bauer Aktiengesellschaft, a company known for its innovative printing solutions. His work at the company has allowed him to develop cutting-edge technologies in the field of security documents.
Collaborations
Stewart has collaborated with notable coworkers, including Arnaud Crassous and Robert Stierman. Their combined expertise has contributed to the advancement of security document technologies.
Conclusion
Robert Stewart's innovative patents and contributions to security document technology highlight his role as a significant inventor in the field. His work continues to influence the development of secure and reliable document solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile