% Expired Patents = 14.3

EPO Patents = 1

Trademarks = 2

Forward Citations = 65

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10 inventors (with patents filed for the assignee):

Mark L Mathis (3 out of 114 patents)

Thomas A Silvestrini (2 out of 78 patents)

James M Davenport (2 out of 21 patents)

4. Bryan E Loomas (2 out of 74 patents)

5. L Lawrence Chapoy (1 out of 5 patents)

6. William M Flynn (1 out of 1 patent)

7. Thomas A Silverstrini (1 out of 4 patents)

8. Robert A Proudfoot (1 out of 7 patents)

9. Joseph A Paraschac (1 out of 1 patent)

10. John Anthony Scholl (1 out of 42 patents)

11. Lawrence L Chapoy (0 patent)

7 patents: Sort by Forward Citations

1. 8394140 - Pre-formed intrastromal corneal insert for corneal abnormalities or dystrophies (2013-03-12),

2. 6966927 - Hybrid intrastromal corneal ring (2005-11-22),

3. 6632232 - Corneal vacuum centering guide and dissector (2003-10-14),

4. 6602266 - Corneal vacuum centering guide and dissector (2003-08-05),

5. 6565584 - Device and method for inserting a biocompatible material into the corneal stroma (2003-05-20),

6. 6508837 - Segmented pre-formed intrastromal corneal insert (2003-01-21),

7. 6447528 - Multiple headed instrument for corneal surgery (2002-09-10),

Company Overview

Addition Technology, Inc. is a leading provider of innovative technology solutions for businesses. They specialize in developing cutting-edge software and hardware products that streamline processes and increase efficiency. With a dedicated team of experts, Addition Technology is committed to delivering high-quality solutions that meet the unique needs of their clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#28 in Des Plaines, IL

#1,885 in Illinois

#39,929 in US

Des Plaines, IL, United States of America

Addition Technology, Inc.

Forward Citations = 65

10 inventors:

Mark L Mathis (3 out of 114 patents)

Thomas A Silvestrini (2 out of 78 patents)

James M Davenport (2 out of 21 patents)

4. Bryan E Loomas (2 out of 74 patents)

5. L Lawrence Chapoy (1 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Addition Technology, Inc.. Retrieved from https://idiyas.com/company/addition-technology

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]

1 patent (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]