Per O Risman

Title: Per O Risman: Innovator in Microwave Technology

Introduction

Per O Risman is a notable inventor based in Herryda, Sweden. He has made significant contributions to the field of microwave technology, holding a total of 4 patents. His innovative designs have improved the functionality and efficiency of microwave ovens.

Latest Patents

Risman’s latest patents include an "Arrangement in a microwave oven" and a "Feeding arrangement for a microwave oven." The first patent addresses the issue of groove-shaped recesses in microwave oven cavities. It introduces a reflecting element in the shape of an elongated strip of conductive material, which is strategically positioned to enhance the microwave field pattern. This conductive strip is covered by dielectric material, ensuring that it effectively reflects microwave radiation at the operational frequency of the oven.

The second patent focuses on a feeding arrangement that allows microwave energy to be efficiently transferred from a source to the oven cavity. This design features a groove-shaped recess in one of the conductive cavity walls, which is covered by a rotatable conductive plate. This innovative setup creates time-varying feeding passages that facilitate the transfer of microwave energy, resulting in a compact and effective dual feed arrangement.

Career Highlights

Per O Risman is associated with U.S. Philips Corporation, where he has been instrumental in advancing microwave technology. His work has not only contributed to the company's reputation but has also set new standards in the industry.

Collaborations

Risman has collaborated with notable colleagues such as Jan S Claesson and Franciscus Kokkeler. Their combined expertise has fostered innovation and development in microwave technology.

Conclusion

Per O Risman is a distinguished inventor whose work in microwave technology has led to significant advancements. His patents reflect a commitment to innovation and efficiency in the design of microwave ovens.