Midland, MI, United States of America

Walter J Schrenk

This inventor holds 36 USPTO granted patents, plus 1 CIPO patent, primarily in Multilayer Polymer Technology. Top assignees: The Dow Chemical Company, 3M Innovative Properties Company. Active years: 1976-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Walter J Schrenk. Retrieved from https://idiyas.com/inventor/walter-j-schrenk

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 = 2.5

ph-index = 30

Forward Citations = 3,923(Granted Patents)


Location History:

  • Bay City, MI (US) (1976 - 1978)
  • Midland, MI (US) (1989 - 2003)

Company Filing History:


Years Active: 1976-2003

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Areas of Expertise:
Birefringent Polarizer
Multilayer Film
Polymeric Reflective Bodies
Optical Interference
Thermoplastic Articles
Coextrusion Process
Infrared Reflecting Film
Layer Thickness Control
Scrapless Forming
Blow Molding
Injection Molding
Ultraviolet Light Reflecting
36 patents (USPTO):Explore Patents

Title: **Innovations of Walter J Schrenk in Birefringent Interference Polarization**

Introduction

Walter J Schrenk, based in Midland, MI, has made significant contributions to the field of optics, holding an impressive total of 36 patents throughout his career. His pioneering work demonstrates a deep understanding of materials and their interactions with light, particularly through innovations in birefringent interference polarizers.

Latest Patents

One of Schrenk's latest patents describes a birefringent interference polarizer that can be produced using readily available materials and established coextrusion techniques. This polarizer is notable for its minimal light absorption, allowing for the polarization and reflection of specific wavelengths while transmitting others. The design incorporates multiple alternating layers of two polymeric materials, which possess different stress optical coefficients. This difference creates a refractive index mismatch in multiple planes, with a recommended mismatch of at least 0.03 in the primary plane, boosting the effectiveness of light manipulation.

Career Highlights

Throughout his professional journey, Walter J Schrenk has worked for prominent organizations such as The Dow Chemical Company and 3M Innovative Properties. His tenure at these companies provided him with invaluable experience and resources to further his innovative endeavors. Schrenk's contributions have played a crucial role in advancing optical technologies.

Collaborations

Walter has collaborated with esteemed colleagues, including John Allen Wheatley and Ralph E Ayres. These collaborations have enriched his work, bringing together diverse expertise and insights that have further propelled advancements in the field of optical engineering.

Conclusion

Walter J Schrenk continues to be a beacon of innovation in optical technologies. His extensive array of patents showcases not only his creativity and expertise but also his commitment to advancing the science of light manipulation. As industries and research institutions seek to improve their optical systems, Schrenk's inventions will undoubtedly remain influential in shaping the future of 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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