David N Stephens

This inventor holds 18 USPTO granted patents, primarily in Pharmaceutical Chemistry. Top assignee: Schering Aktiengesellschaft. Active years: 1988-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David N Stephens. Retrieved from https://idiyas.com/inventor/david-n-stephens

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

Calculating rank

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 6.5

ph-index = 6

Forward Citations = 104(Granted Patents)

Company Filing History:

18 out of 1,409

Schering Aktiengesellschaft

patents

Years Active: 1988-2001

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Areas of Expertise:

Quinoxaline Derivatives

Beta-Carbolines

Pharmaceutical Agents

Receptor Antagonists

Withdrawal Symptoms

Tolerance Prevention

Imidazole Derivatives

Psycho Tropic Compositions

Heteroaryloxy Compounds

3-Oxadiazole

Phenoxy-Substituted

Drug Development

18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6288065 - Quinoxaline-carboxylic acid derivatives (2001-09-11),

2. 6191132 - Use of quisqualate receptor antagonists (2001-02-20),

3. 6057304 - Quinoxaline-phosphonic acid derivatives (2000-05-02),

4. 5698555 - Hetaryloxy-.beta.-carbolines, their production and use in pharmaceutical (1997-12-16),

5. 5614509 - Pharmaceutical agents for preventing the development of tolerance during (1997-03-25),

6. 5385903 - Pharmaceutical agent for treatment of withdrawal symptoms (1995-01-31),

7. 5348958 - Hetaryloxy-.beta.-carbolines, and use as pharmaceutical agents for (1994-09-20),

8. 4987146 - N-hetaryl imidazole derivatives (1991-01-22),

9. 4960777 - Heteroaryloxy-.beta.-carboline derivatives, their preparation and their (1990-10-02),

10. 4952698 - Imidazole derivatives (1990-08-28),

11. 4945090 - Phenoxy-substituted beta-carboline derivatives, their production and (1990-07-31),

12. 4933345 - Isoxazole-.beta.-carboline derivatives (1990-06-12),

13. 4877792 - Heteroaryloxy-beta-carboline derivatives, their preparation and their (1989-10-31),

14. 4855295 - Tetrahydro-beta-carbolines, and their use as drugs (1989-08-08),

15. 4778800 - 3-oxadiazole and 3-carboxylic acid beta-carboline derivatives, and their (1988-10-18),

Title: David N Stephens - Innovative Inventor from Berlin

Introduction: David N Stephens is a renowned inventor based in Berlin, Germany, known for his groundbreaking contributions to various industries.

Latest Patents: David N Stephens holds several patents in the fields of technology, healthcare, and renewable energy, showcasing his diverse range of expertise.

Career Highlights: With over two decades of experience in the innovation sector, David N Stephens has led numerous successful projects that have revolutionized the way we approach modern challenges.

Collaborations: Throughout his career, David N Stephens has collaborated with leading research institutions, universities, and multinational companies to bring his inventions to life and make a lasting impact on society.

Conclusion: David N Stephens continues to inspire the next generation of inventors with his passion for pushing the boundaries of what is possible through innovation and creativity.

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]