Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DS

David N. Stephens — 19 Patents

SCSchering: 18 patents #131 of 2,442Top 6%
UVUniversity of Virginia: 1 patents #483 of 1,170Top 45%
Berlin, DE: #269 of 9,690 inventorsTop 3%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
David N. Stephens has been granted 19 US patents while listed as an inventor at Schering. The first was granted in 1988 and the most recent in May 2009. David N. Stephens ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list David N. Stephens in Berlin, DE.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7527021 Non-invasive drug self-administration system for animals Andy N. Mead, Kevin Lease, Jay Hirsh 2009-05-05
6288065 Quinoxaline-carboxylic acid derivatives Andreas Huth, Ralph Schmiechen, Ilse Beetz, Ingrid Schumann, Lechoslaw Turski +5 more 2001-09-11
6191132 Use of quisqualate receptor antagonists Thomas Klockgether, Peter-Andreas Loschmann, Lechoslaw Turski, Helmut Wachtel 2001-02-20 $171,000
6057304 Quinoxaline-phosphonic acid derivatives Andreas Huth, Ralph Schmiechen, Ilse Beetz, Ingrid Schumann, Lechoslaw Turski +5 more 2000-05-02
5698555 Hetaryloxy-.beta.-carbolines, their production and use in pharmaceutical agents Martin Kruger, Andreas Huth, Dieter Seidelmann, Herbert Schneider, Lechoslaw Turski 1997-12-16
5614509 Pharmaceutical agents for preventing the development of tolerance during the treatment with benzodiazepine-receptor-binding active ingredients Lechoslaw Turski, Karin G. Steppuhn, Herbert Schneider 1997-03-25
5385903 Pharmaceutical agent for treatment of withdrawal symptoms Karin G. Steppuhn, Karin Bressler, Martin Gieseler, Lechoslaw Turski 1995-01-31
5348958 Hetaryloxy-.beta.-carbolines, and use as pharmaceutical agents for treating epilepsy and anxiety Martin Kruger, Andreas Huth, Dieter Seidelmann, Herbert Schneider, Lechoslaw Turski 1994-09-20
4987146 N-hetaryl imidazole derivatives Ralph Rohde, Helmut Biere, Ralph Schmiechen, John S. Andrews 1991-01-22
4960777 Heteroaryloxy-.beta.-carboline derivatives, their preparation and their use as medicinal agents Helmut Biere, Andreas Huth, Dieter Rahtz, Ralph Schmiechen, Dieter Seidelmann +2 more 1990-10-02
4952698 Imidazole derivatives Helmut Biere, Andreas Huth, Dieter Rahtz, Ralph Schmiechen, Dieter Seidelmann +1 more 1990-08-28
4945090 Phenoxy-substituted beta-carboline derivatives, their production and their use as drugs Ralph Schmiechen, Dieter Seidelmann, Andreas Huth, Herbert Schneider, Mogens Engelstoft +2 more 1990-07-31
4933345 Isoxazole-.beta.-carboline derivatives Andreas Huth, Dieter Rahtz, Ralph Rohde, Ralph Schmiechen, Dieter Seidelmann +4 more 1990-06-12
4877792 Heteroaryloxy-beta-carboline derivatives, their preparation and their use as medicinal agents Helmut Biere, Andreas Huth, Dieter Rahtz, Ralph Schmiechen, Dieter Seidelmann +2 more 1989-10-31
4855295 Tetrahydro-beta-carbolines, and their use as drugs Helmut Biere, Mogens Engelstoft, Andreas Huth, Dieter Rahtz, Ralph Schmiechen +1 more 1989-08-08
4778800 3-oxadiazole and 3-carboxylic acid beta-carboline derivatives, and their use as psychotropic agents Andreas Huth, Ralph Schmiechen, Mogens Engelstoft, Frank Waetjen, John Bondo Hansen +1 more 1988-10-18
4757070 3-oxadiazolyl-5-aminoalkyl-beta-carboline derivatives compositions and use Helmut Biere, Andreas Huth, Dieter Rahtz, Ralph Schmiechen, Dieter Seidelmann 1988-07-12
4731365 5-aminoalkyl-beta-carboline derivatives, psycho tropic compositions and use Helmut Biere, Andreas Huth, Dieter Rahtz, Ralph Schmiechen, Dieter Seidelmann 1988-03-15
4719210 3-vinyl and 3-thyinyl-beta-carbolines, and their use as benzodiazepine receptor antagonists or agonists Dieter Seidelmann, Andreas Huth, Ralph Schmiechen, Rudolf Wiechert, Herbert Schneider 1988-01-12