Seattle, WA, United States of America

Paul Donald Freiburger

This inventor holds 29 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Medical Ultrasound Imaging. Top assignees: Siemens Medical Solutions USA, Inc., Siemens Medical Systems, Inc.. Active years: 2001-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Paul Donald Freiburger. Retrieved from https://idiyas.com/inventor/paul-donald-freiburger

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

USPTO Granted Patents = 29 

% Patents Active = 93.1


Average Co-Inventor Count = 2.1

ph-index = 10

Forward Citations = 266(Granted Patents)


Location History:

  • Bellevue, WA (US) (2001 - 2002)
  • Issaquah, WA (US) (2009 - 2012)
  • Seattle, WA (US) (2004 - 2020)

Company Filing History:


Years Active: 2001-2025

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Areas of Expertise:
Spectral Doppler
Ultrasound Imaging
Shear Wave Analysis
Tissue Quantification
Acoustic Absorption
Image Optimization
Transducer Movement
Multi-Dimensional Imaging
Medical Diagnostics
Wave Imaging
Tissue Density
Beam Pattern Variation
29 patents (USPTO):Explore Patents

Title: Paul Donald Freiburger: A Pioneer in Spectral Doppler Imaging Innovations

Introduction: Paul Donald Freiburger is a noteworthy inventor based in Seattle, WA, known for his significant contributions to spectral Doppler imaging technology. With a remarkable portfolio of 28 patents, Freiburger has made a substantial impact in the field of medical imaging, enhancing the accuracy and effectiveness of diagnostic tools.

Latest Patents: Freiburger's latest patents delve into innovative methods for improving spectral Doppler imaging. One such patent addresses spectral Doppler detection, proposing a technique to reduce spatial variance in signal and noise by combining multiple spectra with partially decorrelated noise. This approach allows for the creation of different spectra from distinct spatial signals rather than relying solely on oversampling in time. Through a method of dividing the Doppler gate into sub-gates and utilizing varied beamformed sample locations, Freiburger enhances the quality of Doppler imaging.

Another noteworthy patent focuses on reducing speckle in spectral Doppler imaging by using oversampling relative to the velocity scale to create different, independent data sets. The resulting spectra are combined to produce a spectrum with significantly less speckle, thus improving the signal-to-noise ratio. Moreover, the invention offers flexibility for users to input specific narrow bands concerning the velocity scale, enabling enhanced precision in imaging.

Career Highlights: Paul Donald Freiburger's career is marked by his tenure at prominent companies such as Siemens Medical Solutions USA, Inc. and Siemens Medical Systems, Inc. His work at these organizations has propelled advancements in medical imaging technologies and has made a considerable difference in how clinicians can interpret diagnostic data.

Collaborations: Throughout his career, Freiburger has collaborated with talented individuals in the field, including Liexiang Fan and Paul H. Jones. These partnerships have fostered an environment of innovation, leading to the advancement of imaging techniques and technology.

Conclusion: Paul Donald Freiburger's contributions to the field of spectral Doppler imaging are commendable and influential. With 28 patents to his name, his innovative approaches to reducing noise and improving signal clarity have set new standards in medical imaging technology. As he continues to innovate, Freiburger's work holds the promise of enhancing diagnostic capabilities and improving patient outcomes in medical settings.

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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