Location History:
- Minneapolis, MN (US) (1976 - 1990)
- New Hope, MN (US) (1984 - 1996)
Company Filing History:
7 out of 175 
6 out of 210 
1 out of 1 Years Active: 1976-1996
Title: Douglas J Hennenfent: Innovator in Crushing and Magnetic Technologies
Introduction
Douglas J Hennenfent is a notable inventor based in Minneapolis, MN, with a remarkable portfolio that includes 15 patents. His work primarily focuses on advancements in crushing technologies and magnetic transducer cores. Hennenfent’s innovative approach and engineering finesse have contributed significantly to the fields in which he specializes.
Latest Patents
One of Hennenfent's most recent patents is the "Sprocket Crusher." This innovative device is designed to process feedstock efficiently. The crusher features a pair of rolls disposed in a spaced-apart relationship, with each roll aligned parallel to the other. The unique configuration involves a series of toothed sprockets aligned along the axis of the rolls. These sprockets work in conjunction with spacers, allowing for interleaving between the rolls, enhancing the processing efficiency of the crusher. Additionally, Hennenfent has developed a method for manufacturing a magnetic head core with a flux gap. This process involves the sputtering of gap material on core elements and the diffusion bonding of ferrite elements under specific conditions, ensuring high performance of the magnetic transducers.
Career Highlights
Throughout his career, Hennenfent has been associated with notable companies, including Magnetic Peripherals Inc. and Control Data Corporation. His involvement in these organizations has played a crucial role in his development as an inventor, providing him the platform to explore and refine his innovative ideas.
Collaborations
Hennenfent’s journey in invention is also marked by significant collaborations with colleagues such as Allan L Holmstrand and Robert A Johnson. These partnerships have been instrumental in enhancing his research and development endeavors, allowing for the exchange of ideas and technologies.
Conclusion
Douglas J Hennenfent stands out as a progressive inventor whose contributions have made a lasting impact in the fields of crushing technologies and magnetic systems. With an extensive patent portfolio and valuable collaborations, he continues to push the boundaries of innovation, laying the groundwork for future advancements in these domains.