For the Inventor, By the Inventor

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San Diego, CA, United States of America

T-Systems International, Inc.

USPTO Granted Patents = 19

% Expired Patents = 5.3

Trademarks = 1

Forward Citations = 575

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14 inventors (with patents filed for the assignee):

Michael DeFrank (11 out of 11 patents)

David L Teegardin (6 out of 6 patents)

David Marchetti (5 out of 5 patents)

4. Scott K Avenell (3 out of 3 patents)

5. Harold Daigle (3 out of 3 patents)

6. Mark Huntley (2 out of 2 patents)

7. Que Tran (2 out of 2 patents)

8. Michael P De Frank (2 out of 2 patents)

9. Shawn Shirvan (2 out of 2 patents)

10. Wayne Hackman (2 out of 2 patents)

11. David Giuntoli (1 out of 8 patents)

12. Jaime Cabahug (1 out of 1 patent)

13. Davies Allport (1 out of 3 patents)

14. William F Holzer (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. 6936126 - Method of manufacture of a drip irrigation hose (2005-08-30),

2. 6464816 - Method and apparatus for making a drip irrigation hose (2002-10-15),

3. 6308902 - Drip irrigation hose with emitters having different discharge rates (2001-10-30),

4. RE37097 - Method for splicing drip irrigation hoses using splicing means internal to the hoses (2001-03-20),

5. 6183584 - Method for splicing drip irrigation hoses using two member splicing coupling (2001-02-06),

6. 6116523 - Pressure-compensating drip irrigation hose and method for its manufacture (2000-09-12),

7. 6015102 - External emitter for drip irrigation hose (2000-01-18),

8. 5957391 - Drip irrigation hose with self-cleaning inlet and method for its (1999-09-28),

9. 5865377 - Drip irrigation hose and method for its manufacture (1999-02-02),

10. 5855324 - Drip irrigation hose and method of its manufacture (1999-01-05),

11. 5722601 - Drip irrigation hose and method of its manufacture (1998-03-03),

12. 5690769 - Method for splicing drip irrigation hoses using splicing means internal (1997-11-25),

13. 5634595 - Drip irrigation hose and method for its manufacture (1997-06-03),

14. 5522551 - Drip irrigation hose and method for its manufacture (1996-06-04),

15. 5458712 - Process for forming drip irrigation hose with pressure compensation (1995-10-17),

Company Overview

T-Systems International, Inc. is a prominent player in the field of digital services and solutions, specializing in cloud computing, cybersecurity, and IT infrastructure. Headquartered in San Diego, California, the company focuses on delivering innovative technology solutions that empower businesses to enhance their operational efficiency and digital transformation. With a strong emphasis on research and development, T-Systems is committed to advancing technologies that support various industries, including telecommunications, automotive, and healthcare.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

19 Patents

#313 in San Diego, CA

#4,095 in California

#17,123 in US

#32,623 in the World

San Diego, CA, United States of America

T-Systems International, Inc.

Forward Citations = 575

14 inventors:

Michael DeFrank (11 out of 11 patents)

David L Teegardin (6 out of 6 patents)

David Marchetti (5 out of 5 patents)

4. Scott K Avenell (3 out of 3 patents)

5. Harold Daigle (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: T-Systems International, Inc.. Retrieved from https://idiyas.com/company/t-systems-international

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]

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