David M. Tschaen

Person

Rahway, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Process for making reverse transcriptase inhibitors
- Patent number 9,598,397
- Issue date Mar 21, 2017
- Merck Sharp & Dohme Corp.
- Yang Cao
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making spirolactone compounds
- Patent number 7,482,449
- Issue date Jan 27, 2009
- Merck & Co., Inc.
- Ralph P. Volante
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making spirolactone compounds
- Patent number 7,368,569
- Issue date May 6, 2008
- Merck & Co., Inc.
- Ralph P. Volante
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for making spirolactone compounds
- Patent number 6,605,720
- Issue date Aug 12, 2003
- Merck & Co., Inc.
- Kenji Maeda
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation and isolation of indolocarbazole glycosides
- Patent number 6,559,299
- Issue date May 6, 2003
- Merck & Co., Inc.
- Steven Weissman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diastereoselective preparation of Michael adducts
- Patent number 6,479,672
- Issue date Nov 12, 2002
- Merck & Co., Inc.
- Ioannis Houpis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Asymmetric conjugate addition reaction
- Patent number 6,353,110
- Issue date Mar 5, 2002
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Asymmetric conjugate addition reaction
- Patent number 6,172,235
- Issue date Jan 9, 2001
- Merck & Co., Inc.
- Ulf H. Dolling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidation process using periodic acid
- Patent number 6,172,231
- Issue date Jan 9, 2001
- Merck & Co., Inc.
- Zhiguo Song
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidation process using periodic acid
- Patent number 6,150,554
- Issue date Nov 21, 2000
- Merck & Co., Inc.
- Jing Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidaton of primary alcohols to carboxylic acids with a TEMPO catal...
- Patent number 6,127,573
- Issue date Oct 3, 2000
- Merck & Co., Inc.
- Jing Li
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Enantioselective bioreduction using yeast
- Patent number 6,121,026
- Issue date Sep 19, 2000
- Merck & Co., Inc.
- Michel M. Chartrain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Phosphate-mediated cyclization
- Patent number 6,046,327
- Issue date Apr 4, 2000
- Merck & Co., Inc.
- Richard D. Tillyer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidation process using tempo
- Patent number 6,031,101
- Issue date Feb 29, 2000
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pyridine propanoic acid derivatives
- Patent number 6,022,972
- Issue date Feb 8, 2000
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Asymmetric conjugate addition reaction using a chiral additive
- Patent number 5,998,625
- Issue date Dec 7, 1999
- Merck & Co., Inc.
- Richard D. Tillyer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stereoselective deoxygenation reaction
- Patent number 5,962,688
- Issue date Oct 5, 1999
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chiral auxilary for stereoselective alkylations
- Patent number 5,856,519
- Issue date Jan 5, 1999
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Compounds formed by an asymmetric conjugate addition reaction
- Patent number 5,849,914
- Issue date Dec 15, 1998
- Merck & Co., Inc.
- Ulf H. Dolling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process of preparing phenyl heterocycles useful as COX-2 inhibitors
- Patent number 5,840,924
- Issue date Nov 24, 1998
- Merck & Co., Inc.
- Richard Desmond
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Synthesis of .alpha.-chloro or fluoro ketones
- Patent number 5,786,515
- Issue date Jul 28, 1998
- Merck & Co., Inc.
- Ulf H. Dolling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stereoselective process
- Patent number 5,708,186
- Issue date Jan 13, 1998
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of an endothelin antagonist
- Patent number 5,688,974
- Issue date Nov 18, 1997
- Merck & Co., Inc.
- Paul N. Devine
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process of making cox-2 inhibitors having a lactone bridge
- Patent number 5,585,504
- Issue date Dec 17, 1996
- Merck & Co., Inc.
- Richard Desmond
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Enantioselective synthesis of cyclic amino alcohols
- Patent number 5,574,186
- Issue date Nov 12, 1996
- Merck & Co., Inc.
- Charles Boudreau
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process of making spirocycles and analogs thereof
- Patent number 5,484,923
- Issue date Jan 16, 1996
- Merck & Co., Inc.
- Dongwei Cai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Asymmetric bioreduction of 6-bromo-2-tetralone to (s)-6-bromo-2 tet...
- Patent number 5,464,762
- Issue date Nov 7, 1995
- Merck & Co., Inc.
- Michel M. Chartrain
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Process for synthesis of FK-506 and tricarbonyl intermediates
- Patent number 5,446,158
- Issue date Aug 29, 1995
- Merck & Co., Inc.
- Todd K. Jones
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
In-situ preparation of diisopinocamphenyl chloroborane
- Patent number 5,292,946
- Issue date Mar 8, 1994
- Merck & Co., Inc.
- Pamela M. Simpson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stereoselective synthesis of a chiral cis 3-beta hydrogen (3R) 4-ar...
- Patent number 5,145,957
- Issue date Sep 8, 1992
- Merck & Co., Inc.
- David M. Tschaen
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR MAKING REVERSE TRANSCRIPTASE INHIBITORS
- Publication number 20160297794
- Publication date Oct 13, 2016
- MERCK SHARP & DOHME CORP.
- Yang Cao
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for making spirolactone compounds
- Publication number 20080171888
- Publication date Jul 17, 2008
- Ralph P. Volante
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for Making Spirolactone Compounds
- Publication number 20060014950
- Publication date Jan 19, 2006
- Ralph P Volante
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Preparation and isolation of indolocarbazole glycosides
- Publication number 20040116688
- Publication date Jun 17, 2004
- Steven Weissman
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESS FOR MAKING SPIROLACTONE COMPOUNDS
- Publication number 20030144515
- Publication date Jul 31, 2003
- Kenji Maeda
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Preparation and isolation of indolocarbazole glycosides
- Publication number 20020193324
- Publication date Dec 19, 2002
- Steven Weissman
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the synthesis of an endothelin receptor antagonist
- Publication number 20020107391
- Publication date Aug 8, 2002
- Lisa F. Frey
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Therapeutic polymorphs of a GABA-A alpha-5 inverse agonist and pamo...
- Publication number 20010049439
- Publication date Dec 6, 2001
- MERCK & CO., Inc.
- Michael J. Kaufman
- C07 - ORGANIC CHEMISTRY

David M. Tschaen

Person

Patents Grantslast 30 patents

Process for making reverse transcriptase inhibitors

Process for making spirolactone compounds

Process for making spirolactone compounds

Process for making spirolactone compounds

Preparation and isolation of indolocarbazole glycosides

Diastereoselective preparation of Michael adducts

Asymmetric conjugate addition reaction

Asymmetric conjugate addition reaction

Oxidation process using periodic acid

Oxidation process using periodic acid

Oxidaton of primary alcohols to carboxylic acids with a TEMPO catal...

Enantioselective bioreduction using yeast

Phosphate-mediated cyclization

Oxidation process using tempo

Pyridine propanoic acid derivatives

Asymmetric conjugate addition reaction using a chiral additive

Stereoselective deoxygenation reaction

Chiral auxilary for stereoselective alkylations

Compounds formed by an asymmetric conjugate addition reaction

Process of preparing phenyl heterocycles useful as COX-2 inhibitors

Synthesis of .alpha.-chloro or fluoro ketones

Stereoselective process

Process for the preparation of an endothelin antagonist

Process of making cox-2 inhibitors having a lactone bridge

Enantioselective synthesis of cyclic amino alcohols

Process of making spirocycles and analogs thereof

Asymmetric bioreduction of 6-bromo-2-tetralone to (s)-6-bromo-2 tet...

Process for synthesis of FK-506 and tricarbonyl intermediates

In-situ preparation of diisopinocamphenyl chloroborane

Stereoselective synthesis of a chiral cis 3-beta hydrogen (3R) 4-ar...

Patents Applicationslast 30 patents

PROCESS FOR MAKING REVERSE TRANSCRIPTASE INHIBITORS

Process for making spirolactone compounds

Process for Making Spirolactone Compounds

Preparation and isolation of indolocarbazole glycosides

PROCESS FOR MAKING SPIROLACTONE COMPOUNDS

Preparation and isolation of indolocarbazole glycosides

Process for the synthesis of an endothelin receptor antagonist

Therapeutic polymorphs of a GABA-A alpha-5 inverse agonist and pamo...