Forward Citations = 410

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6 inventors (with patents filed for the assignee):

Mark W Dassel (15 out of 42 patents)

Eustathios Vassiliou (15 out of 142 patents)

Ader M Rostami (8 out of 29 patents)

4. David C DeCoster (8 out of 30 patents)

5. Sharon M Aldrich (3 out of 10 patents)

6. Douglas J Dudgeon (1 out of 8 patents)

15 patents: Sort by Forward Citations

1. 5980801 - Methods of preparing an intermediate oxidation product from a (1999-11-09),

2. 5939582 - Reaction control by regulating internal condensation inside a reactor (1999-08-17),

3. 5929277 - Methods of removing acetic acid from cyclohexane in the production of (1999-07-27),

4. 5922908 - Methods for preparing dibasic acids (1999-07-13),

5. 5908589 - Methods for separating catalyst from oxidation mixtures containing (1999-06-01),

6. 5883292 - Reaction control by regulating internal condensation inside a reactor (1999-03-16),

7. 5877341 - Methods and devices for controlling the reaction rate of a hydrocarbon (1999-03-02),

8. 5824819 - Methods of preparing an intermediate oxidation product from a (1998-10-20),

9. 5817868 - Method and devices for controlling the oxidation of a hydrocarbon to an (1998-10-06),

10. 5801282 - Methods of making intermediate oxidation products by controlling (1998-09-01),

11. 5801273 - Methods and devices for controlling the reaction rate of a hydrocarbon (1998-09-01),

12. 5654475 - Methods of making intermediate oxidation products by controlling (1997-08-05),

13. 5580531 - Devices for making reaction products by controlling transient conversion (1996-12-03),

14. 5558842 - Devices for making reaction products by controlling pre-coalescing (1996-09-24),

15. 5502245 - Methods of making intermediate oxidation products by controlling (1996-03-26),

Company Overview

Twenty-First Century Research Corporation is a technology-focused organization based in Newark, Delaware, specializing in advanced research and development across various domains. The company is known for its innovative contributions to fields such as medical devices, telecommunications, and software solutions. By leveraging cutting-edge technologies, it aims to address complex challenges and enhance the quality of life through its products and services, positioning itself as a key player in the evolving landscape of technology and research.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#22 in Newark, DE

#330 in Delaware

#21,068 in US

#39,959 in the World

Newark, DE, United States of America

Twenty-First Century Research Corporation

Forward Citations = 410

6 inventors:

Mark W Dassel (15 out of 42 patents)

Eustathios Vassiliou (15 out of 142 patents)

Ader M Rostami (8 out of 29 patents)

4. David C DeCoster (8 out of 30 patents)

5. Sharon M Aldrich (3 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Twenty-First Century Research Corporation. Retrieved from https://idiyas.com/company/twenty-first-century-research

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]