Perry Hall, MD, United States of America

Robert Louis Stone

This inventor holds 7 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignees: Postis LLC, Sick Inc., Northrop Grumman Systems Corporation. Active years: 1992-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert Louis Stone. Retrieved from https://idiyas.com/inventor/robert-louis-stone

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

USPTO Granted Patents = 7 

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.4

ph-index = 3

Forward Citations = 145(Granted Patents)


Location History:

  • Newfield, ME (US) (1992)
  • Perry Hall, MD (US) (2009 - 2016)

Company Filing History:


Years Active: 1992-2016

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7 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Robert Louis Stone

Introduction

Robert Louis Stone is a notable inventor based in Perry Hall, Maryland, with a remarkable portfolio of seven patents. His work primarily focuses on enhancing electrical safety and improving mail sortation systems. Stone's inventions reflect his commitment to innovation and practicality in everyday applications.

Latest Patents

One of Stone's latest patents is the Electrical Enclosure Voltage Protection System. This invention is an electrical isolation apparatus designed to automatically interrupt main power before it connects to the main electrical panel whenever the main disconnect switch is turned off. The system includes a method for retrofitting existing electrical panel enclosures with an electrical isolation box (EIB). The EIB is equipped with a power contactor and an auxiliary relay that enhances safety by preventing high voltage conditions in the main power receptacle after the disconnect is actuated.

Another significant invention is the Mail Carrier Sequencer, a mail sortation system capable of processing mail from random order to delivery point sequence (DPS) in a single sortation pass. This system features multiple sortation assemblies, including open-topped receptacles and linearly-translating conveyors, which work together to efficiently sort mail into the desired sequence.

Career Highlights

Throughout his career, Robert Louis Stone has worked with various companies, including Sick Inc. His innovative contributions have made a significant impact in the fields of electrical engineering and mail processing.

Collaborations

Stone has collaborated with notable individuals such as Mohammed Islam and Young K Yoo, further enhancing the development of his inventions.

Conclusion

Robert Louis Stone's inventive spirit and dedication to improving safety and efficiency in electrical systems and mail sortation processes exemplify the essence of innovation. His contributions continue to influence these industries positively.

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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