Longmont, CO, United States of America

Donald L Greenwood

This inventor holds 5 USPTO granted patents. Top assignees: Dart Industries Inc., Other. Active years: 1977-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald L Greenwood. Retrieved from https://idiyas.com/inventor/donald-l-greenwood

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 50(Granted Patents)


Location History:

  • Akron, IA (US) (1977)
  • Longmowt, CO (US) (1986)
  • Longmont, CO (US) (1980 - 1991)

Company Filing History:

goldMedal1 out of 1,642 
 
Dart Industries Inc.
 patents
silverMedal3 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1977-1991

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5 patents (USPTO):Explore Patents

Title: The Innovative Mind of Donald L Greenwood

Introduction

Donald L Greenwood is a notable inventor based in Longmont, Colorado. He has made significant contributions to the field of toy design and functionality, holding a total of five patents. His inventive spirit and creativity have led to the development of unique products that enhance play experiences for children.

Latest Patents

Among his latest patents is a "Shoulder rest for telephone handset or the like," which showcases his ability to improve everyday items. Another remarkable invention is the "Upright rolling toy assembly." This self-righting upright rolling toy figure is designed to be molded in half sections and assembled into a body forming the figure. The toy features weights mounted in the lowermost portion of the halves to create necessary righting and stabilizing forces. A wheel with a wide rim is pivotally mounted within the halves, allowing for rolling contact on a support surface. The design includes various assembly options, enabling interconnection between figures and the addition of carts or wagons.

Career Highlights

Throughout his career, Donald has worked with various companies, including Dart Industries Inc. His innovative designs have not only contributed to the toy industry but have also showcased his versatility as an inventor.

Collaborations

Donald has collaborated with notable individuals in the field, including Reuben B Klamer. Their partnership has likely fostered creativity and innovation in their respective projects.

Conclusion

Donald L Greenwood's inventive contributions have left a lasting impact on the toy industry. His patents reflect a blend of creativity and functionality, making playtime more enjoyable for children. His work continues to inspire future innovations in design and engineering.

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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