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For the Inventor, By the Inventor

Chatsworth, CA, United States of America

Donald R Juilfs

This inventor holds 5 USPTO granted patents. Top assignees: Geophysical Systems Corporation, Other. Active years: 1976-1977.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald R Juilfs. Retrieved from https://idiyas.com/inventor/donald-r-juilfs

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 49(Granted Patents)


Company Filing History:

goldMedal4 out of 15 
 
Geophysical Systems Corporation
 patents
silverMedal1 out of 834,570 
Other
 patents

Years Active: 1976-1977

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5 patents (USPTO):Explore Patents
1. 4048695 - Door check and closure device (1977-09-20),
2. 4021649 - Data compositing and array control system (1977-05-03),
3. 4001769 - Data array network system (1977-01-04),
4. 3986008 - Data compositing and array control system (1976-10-12),
5. 3938073 - Data array network system (1976-02-10),

Title: The Innovative Contributions of Donald R. Juilfs

Introduction

Donald R. Juilfs is a notable inventor based in Chatsworth, CA (US). He has made significant contributions to the field of technology, holding a total of 5 patents. His inventions reflect a blend of practicality and advanced engineering, showcasing his expertise and innovative spirit.

Latest Patents

One of Juilfs' latest patents is a door check and closure device. This invention relates to a door closer and holder that features a longitudinally movable rod containing a niche. This niche rests against a stop plate to hold the door in an open position. A rotating cam is positioned adjacent to the niche in the rod, allowing the rod to bypass the stop plate and close the door when needed. Another significant patent is the data compositing and array control system. This system is designed for the acquisition of analog signals from multiple sensors. It processes these signals by amplifying, digitizing, and storing them in a structured manner, enabling efficient data management and retrieval.

Career Highlights

Throughout his career, Donald R. Juilfs has worked with various companies, including Geophysical Systems Corporation. His work has contributed to advancements in technology and engineering, demonstrating his commitment to innovation.

Collaborations

Juilfs has collaborated with notable individuals such as J. Robert Fort and James A. Westphal. These partnerships have likely enriched his work and expanded the impact of his inventions.

Conclusion

Donald R. Juilfs is a distinguished inventor whose contributions have significantly influenced technology. His innovative patents and collaborations reflect his dedication to advancing engineering solutions.

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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