This inventor holds 4 USPTO granted patents. Top assignees: Donaldson Comapny, Inc., Other. Active years: 1977-1987.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Minneapolis, MN (US) (1985)
- Bloomington, MN (US) (1977 - 1987)
Company Filing History:
3 out of 1,449 
1 out of 834,513 Years Active: 1977-1987
Title: The Innovative Contributions of Donald D Gronholz
Introduction
Donald D Gronholz is a notable inventor based in Bloomington, MN (US). He has made significant contributions to the field of air filtration technology, holding a total of 4 patents. His inventions reflect a commitment to improving air quality through innovative design and engineering.
Latest Patents
One of his latest patents is an air filter device designed to provide efficient filtration of air. This device features a body and a cover with endless mating structures that can be welded together, effectively pinching a flat sheet filter media and holding it securely in place. The design encapsulates the cut edge of the filter media, ensuring durability and effectiveness. Additionally, the filter media is held outwardly from the bottom of the body by gussets, allowing ample area for air to pass through. Inlet openings are strategically placed to facilitate attachment to a sealed housing, commonly used in disk drive systems.
Another significant patent is the crimp seal pleated filter assembly. This assembly includes a base, a frame, and a filter media with multiple pleats. The pleats are uniformly aligned and secured within the assembly by crimp sealing the filter media ends between interlocking projections on the sides of the base and frame. This design minimizes flaking or chafing of fibers from the filter, enhancing its longevity and performance.
Career Highlights
Throughout his career, Donald D Gronholz has worked with Donaldson Company, Inc., where he has contributed to the development of advanced filtration solutions. His work has been instrumental in enhancing the efficiency and effectiveness of air filtration systems.
Collaborations
Donald has collaborated with notable coworkers such as Barbara L Kruse and Darrell D Gronli, contributing to a dynamic work environment that fosters innovation and creativity.
Conclusion
Donald D Gronholz's contributions to air filtration technology through his patents and collaborations highlight his role as a significant inventor in this field. His innovative designs continue to impact the industry positively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile