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For the Inventor, By the Inventor

West Caldwell, NJ, United States of America

Robert C MacDonald

This inventor holds 11 USPTO granted patents. Top assignees: Westinghouse Electric Corporation, Inventio Ag. Active years: 1978-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert C MacDonald. Retrieved from https://idiyas.com/inventor/robert-c-macdonald-d2u5aq6a

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 6

Forward Citations = 75(Granted Patents)


Location History:

  • W. Caldwell, NJ (US) (1988 - 1989)
  • West Caldwell, NJ (US) (1978 - 1999)

Company Filing History:

goldMedal8 out of 8,033 
 
Westinghouse Electric Corporation
 patents
silverMedal3 out of 1,409 
 
Inventio Ag
 patents

Years Active: 1978-1999

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11 patents (USPTO):Explore Patents
1. 5883343 - Downpeak group optimization (1999-03-16),
2. 5305194 - Method and apparatus for preventing local bunching of cars in an (1994-04-19),
3. 4875554 - Dynamic selection of elevator call assignment scan direction (1989-10-24),
4. 4793443 - Dynamic assignment switching in the dispatching of elevator cars (1988-12-27),
5. 4790412 - Anti-bunching method for dispatching elevator cars (1988-12-13),
6. 4784240 - Method for using door cycle time in dispatching elevator cars (1988-11-15),
7. 4782921 - Coincident call optimization in an elevator dispatching system (1988-11-08),
8. 4511017 - Elevator system (1985-04-16),
9. 4482032 - Elevator emergency control system (1984-11-13),
10. 4431085 - Method of operating an elevator system (1984-02-14),
11. 4129199 - Elevator system (1978-12-12),

Title: The Innovative Mind of Robert C MacDonald

Introduction

Robert C MacDonald is a notable inventor based in West Caldwell, NJ (US). He has made significant contributions to the field of elevator technology, holding a total of 11 patents. His work focuses on optimizing elevator systems to improve efficiency and reduce wait times for passengers.

Latest Patents

One of MacDonald's latest patents is titled "Downpeak Group Optimization." This system and method optimally allocate elevator cars to serve downpeak traffic by monitoring a snapshot of pending down hall calls. It forms groups based on an initialized floor separation value and adjusts this value until the number of groups is equal to or less than the available elevator cars. Another significant patent is the "Method and Apparatus for Preventing Local Bunching of Cars." This method minimizes car bunching at any traffic flow level by allocating closely adjacent stops to a favored car, using a variable, readjustable distributor bonus. The system computes the estimated lost time costs for passengers and adjusts the distributor bonus based on traffic flow, ensuring optimal performance across varying traffic levels.

Career Highlights

Throughout his career, MacDonald has worked with prominent companies such as Westinghouse Electric Corporation and Inventio AG. His experience in these organizations has allowed him to develop and refine his innovative ideas in elevator technology.

Collaborations

MacDonald has collaborated with talented individuals in his field, including coworkers Elsa Abrego and Emanuel E Enriquez. Their combined expertise has contributed to the advancement of elevator systems and technologies.

Conclusion

Robert C MacDonald is a distinguished inventor whose work in elevator optimization has made a lasting impact on the industry. His innovative patents and collaborations reflect his commitment to enhancing passenger experience and efficiency in elevator systems.

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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