% Expired Patents = 20.0

EPO Patents = 2

Forward Citations = 120

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8 inventors (with patents filed for the assignee):

Robert J Koffron (8 out of 11 patents)

Ross A Jacobs (3 out of 4 patents)

Jeffrey Jacobs (2 out of 4 patents)

4. Charles L Ramiller (2 out of 2 patents)

5. John W Dresh (1 out of 2 patents)

6. Martin L Hammond (1 out of 5 patents)

7. Rudolfo S Cardema (1 out of 1 patent)

8. Michael J Wooding (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 8591802 - Vortex inhibitor (2013-11-26),

2. 7169349 - Method and apparatus for delivering metallurgically improved molten metal (2007-01-30),

3. 6723275 - Vortex inhibitor with sacrificial rod (2004-04-20),

4. 6576039 - Method and apparatus for metal pouring (2003-06-10),

5. RE37417 - Vortex inhibitor for molten metal discharge (2001-10-23),

6. 6074598 - Method and apparatus for slag separation sensing (2000-06-13),

7. 5044610 - Vortex inhibitor for molten metal discharge (1991-09-03),

8. 4886412 - Method and system for loading wafers (1989-12-12),

9. 4871148 - Vortex inhibitor for molten metal discharge (1989-10-03),

10. 4694779 - Reactor apparatus for semiconductor wafer processing (1987-09-22),

Company Overview

Tetron, Inc. is a technology-driven company based in Farmington Hills, Michigan, specializing in advanced engineering solutions and innovative product development. The organization focuses on various sectors, including automotive engineering and manufacturing, where it leverages cutting-edge technologies to enhance performance and efficiency. With a commitment to research and development, Tetron aims to deliver high-quality products that meet the evolving needs of its clients in a competitive market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

10 Patents

#22 in Farmington Hills, MI

#1,037 in Michigan

#29,839 in US

#55,986 in the World

Farmington Hills, MI, United States of America

Tetron, Inc.

Forward Citations = 120

8 inventors:

Robert J Koffron (8 out of 11 patents)

Ross A Jacobs (3 out of 4 patents)

Jeffrey Jacobs (2 out of 4 patents)

4. Charles L Ramiller (2 out of 2 patents)

5. John W Dresh (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tetron, Inc.. Retrieved from https://idiyas.com/company/tetron

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]

2 patents (EPO):

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]