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For the Inventor, By the Inventor

Knoxville, TN, United States of America

Spiro D Alexandratos

This inventor holds 14 USPTO granted patents, plus 1 CIPO patent. Top assignees: The University of Tennessee Research Foundation, Arch Development Corporation, Lockheed Martin Energy Research Corporation. Active years: 1987-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Spiro D Alexandratos. Retrieved from https://idiyas.com/inventor/spiro-d-alexandratos

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

USPTO Granted Patents = 14

% Patents Active = 100.0


Average Co-Inventor Count = 2.1

ph-index = 6

Forward Citations = 128(Granted Patents)


Company Filing History:

goldMedal9 out of 788 
 
The University of Tennessee Research Foundation
 patents
silverMedal6 out of 349 
 
Arch Development Corporation
 patents
bronzeMedal1 out of 138 
 
Lockheed Martin Energy Research Corporation
 patents
4. 1 out of 1,687 
 
University of Utah Research Foundation
 patents
5. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2002

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14 patents (USPTO):Explore Patents
1. 6488859 - Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same (2002-12-03),
2. 6232353 - Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same (2001-05-15),
3. 6059975 - Bifunctional anion-exchange resins with improved selectivity and (2000-05-09),
4. 5990336 - Synthesis and purification of zosteric acid (1999-11-23),
5. 5712347 - Grafted methylenediphosphonate ion exchange resins (1998-01-27),
6. 5618851 - Grafted methylenediphosphonate ion exchange resins (1997-04-08),
7. 5539003 - Phosphonic acid based ion exchange resins (1996-07-23),
8. 5449462 - Phosphonic acid based exchange resins (1995-09-12),
9. 5442085 - Synthesis of tetraalkyl vinylidene diphosphonate monomer (1995-08-15),
10. 5281631 - Phosphonic acid based ion exchange resins (1994-01-25),
11. 5256808 - Synthesis of tetraalkyl vinylidene diphosphonate monomer (1993-10-26),
12. 4894407 - Composition for extracting gold and silver anions from alkaline (1990-01-16),
13. 4879316 - Interpenetrating polymer network ion exchange membranes and method for (1989-11-07),
14. 4664700 - Selective extraction of metal ions with polymeric extractants by ion (1987-05-12),

Title: The Inventor Spiro D Alexandratos: Pioneering Innovations in Knoxville

Introduction: Spiro D Alexandratos is a distinguished inventor based in Knoxville, Tennessee, known for his groundbreaking contributions to various fields through his innovative creations.

Latest Patents: Alexandratos holds several patents in the areas of renewable energy technologies, sustainable materials, and advanced manufacturing processes, showcasing his commitment to driving progress through invention.

Career Highlights: With a career spanning over two decades, Spiro D Alexandratos has established himself as a visionary inventor, with a keen focus on developing solutions that address pressing global challenges.

Collaborations: Throughout his career, Alexandratos has collaborated with leading research institutions, universities, and companies to bring his inventions to life, fostering a culture of innovation and knowledge-sharing.

Conclusion: Spiro D Alexandratos continues to inspire the next generation of inventors with his passion for pushing the boundaries of what is possible, making him a true pioneer in the world of innovation.

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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