Espoo, Finland

Viljo Petäjä

This inventor holds 6 USPTO granted patents. Top assignees: Varian Medical Systems International Ag, Siemens Healthineers International Ag. Active years: 2019-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Viljo Petäjä. Retrieved from https://idiyas.com/inventor/viljo-petäjä

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 5.1

ph-index = 3

Forward Citations = 68(Granted Patents)


Company Filing History:


Years Active: 2019-2025

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6 patents (USPTO):Explore Patents

Title: The Innovations of Inventor Viljo Petäjä in Radiation Treatment Technologies

Introduction: Viljo Petäjä is a noteworthy inventor based in Espoo, Finland, recognized for his significant contributions to radiation treatment technologies. With five patents to his name, he has shown remarkable ingenuity in optimizing radiation therapy, benefiting countless patients through improved treatment methods.

Latest Patents: Petäjä's latest innovations focus on enhancing the efficiency of external-beam radiation treatments. His first patent involves generating time-efficient treatment field trajectories for radiation treatment plans that utilize multiple treatment modalities. This method ensures an optimized spatial point sequence, effectively minimizing total treatment time by intermixing different treatment fields for both beam-on and beam-off durations.

Another notable patent addresses optimizing radiation-treatment plans by allowing non-coincidental isocenters. This innovative approach uses patient data and treatment-platform information to permit the isocenters of various radiation-treatment fields within the same plan to be non-coincidental. This results in a more efficient treatment, helping to scatter isocenters effectively around critical points to enhance overall energy flux distribution.

Career Highlights: Viljo Petäjä is currently employed at Varian Medical Systems, an esteemed company specializing in radiation oncology solutions. His role involves developing cutting-edge technologies that push the boundaries of conventional cancer treatment methods.

Collaborations: Throughout his career, Petäjä has collaborated with esteemed colleagues, including Esa Kuusela and Santtu Ollila. These partnerships have fostered a conducive environment for innovation and have led to significant advancements in the field of radiation therapy.

Conclusion: Viljo Petäjä exemplifies the pivotal role of inventors in transforming health care through innovative solutions. His contributions not only enhance the effectiveness of radiation treatments but also reflect a commitment to improving patient care. With a promising portfolio of patents, Petäjä continues to be a vital figure in the field of medical technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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