For the Inventor, By the Inventor

Enter assignee name

Easton, PA, United States of America

Si Handling Systems, Inc.

USPTO Granted Patents = 65

Trademarks = 4

Forward Citations = 1,534

Loading Chart...

Loading Chart...

49 inventors (with patents filed for the assignee):

Peter H Rohrbach (6 out of 7 patents)

Charles E Jacoby (6 out of 8 patents)

Barry L Ziegenfus (5 out of 9 patents)

4. Craig F Sleep (5 out of 5 patents)

5. William L Brown (5 out of 5 patents)

6. Per E Lindquist (5 out of 5 patents)

7. Russell H Scheel (4 out of 9 patents)

8. Vercoe C Jones (3 out of 3 patents)

9. Robert A Hale (3 out of 3 patents)

10. Katsuhiro Nagahori (3 out of 3 patents)

11. James L Thatcher (3 out of 3 patents)

12. David A Clark (2 out of 2 patents)

13. James Werkheiser (2 out of 2 patents)

14. Phillip N Ross (2 out of 2 patents)

15. Larry L Reagan (2 out of 2 patents)

Core Competencies:

Automated Order Filling

Order Selection

Sortation System

Driverless Vehicle

Precision Location

Traffic Control

Conveyor Systems

Material Handling

Speed Control

Tugger Vehicle

Accumulation Systems

Shuttle Vehicle

65 patents: Sort by Forward Citations

1. 6505093 - Automated order filling method and system (2003-01-07),

2. 6208908 - Integrated order selection and distribution system (2001-03-27),

3. 5977501 - Sortation and sequencing system (1999-11-02),

4. 5720157 - Automatic order selection system and method of operating (1998-02-24),

5. 5271703 - Automatic order selection system capable of responding to simultaneous (1993-12-21),

6. 4817000 - Automatic guided vehicle system (1989-03-28),

7. 4798147 - Drive wheel adjuster for driverless vehicle (1989-01-17),

8. 4782760 - Vehicle precision location assembly (1988-11-08),

9. 4718350 - Small lightweight driverless vehicle (1988-01-12),

10. 4691641 - Vehicle accumulation system (1987-09-08),

11. 4664036 - Conveyor having curved track section (1987-05-12),

12. 4646649 - Driverless vehicle with floating mounted substrate, and precision (1987-03-03),

13. 4628823 - Vehicle speed control transition module and method (1986-12-16),

14. 4620280 - Intelligent driverless vehicle (1986-10-28),

15. 4619204 - Driverless tugger vehicle and system (1986-10-28),

Company Overview

Si Handling Systems, Inc. is a prominent player in the field of driverless vehicle technology, specializing in innovative solutions for automated order filling, order selection, and sortation systems. Based in Easton, PA, the company focuses on enhancing material handling processes through advanced technologies such as precision location and traffic control systems. Their expertise extends to conveyor systems, enabling efficient and streamlined operations in various industrial settings, thereby improving productivity and operational efficiency.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

65 Patents

#8 in Easton, PA

#211 in Pennsylvania

#5,614 in US

#11,344 in the World

Easton, PA, United States of America

Si Handling Systems, Inc.

Forward Citations = 1,534

49 inventors:

Peter H Rohrbach (6 out of 7 patents)

Charles E Jacoby (6 out of 8 patents)

Barry L Ziegenfus (5 out of 9 patents)

4. Craig F Sleep (5 out of 5 patents)

5. William L Brown (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Si Handling Systems, Inc.. Retrieved from https://idiyas.com/company/si-handling-systems

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

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]

Loading…