George Helmut Klemm

Person

Hazelwood, MO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Preparation of sufentanil citrate and sufentanil base
- Patent number 10,899,749
- Issue date Jan 26, 2021
- SpecGX LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of sufentanil citrate and sufentanil base
- Patent number 10,227,335
- Issue date Mar 12, 2019
- SpecGX LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of sufentanil base and related compounds
- Patent number 8,946,433
- Issue date Feb 3, 2015
- Mallinckrodt LLC
- Brian Orr
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Processes for the preparation of 3-(4-(2,4-difluorobenzyloxy)-3-bro...
- Patent number 7,906,536
- Issue date Mar 15, 2011
- Pfizer Inc.
- Daniel Dukesherer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Synthesis of diaryl pyrazoles
- Patent number 7,759,497
- Issue date Jul 20, 2010
- Pfizer Inc.
- Leo J. Letendre
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Synthesis of diaryl pyrazoles
- Patent number 7,141,678
- Issue date Nov 28, 2006
- Pharmacia Corporation
- Leo J. Letendre
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE
- Publication number 20230074804
- Publication date Mar 9, 2023
- SpecGX LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE
- Publication number 20210061793
- Publication date Mar 4, 2021
- SpecGX LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE
- Publication number 20190152961
- Publication date May 23, 2019
- SpecGX LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE
- Publication number 20160347743
- Publication date Dec 1, 2016
- Mallinckrodt LLC
- George Helmut Klemm
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for the Preparation of Sufentanil Base and Related Compounds
- Publication number 20120071659
- Publication date Mar 22, 2012
- Mallinckrodt LLC
- Brian ORR
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PROCESSES FOR THE PREPARATION OF 3-(4-(2,4-DIFLUOROBENZYLOXY)-3-BRO...
- Publication number 20080177077
- Publication date Jul 24, 2008
- Pfizer, Inc.
- Daniel Dukesherer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
SYNTHESIS OF DIARYL PYRAZOLES
- Publication number 20070004924
- Publication date Jan 4, 2007
- Pharmacia Corporation
- Leo J. Letendre
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Synthesis of diaryl pyrazoles
- Publication number 20040024225
- Publication date Feb 5, 2004
- Pharmacia Corporation
- Leo J. Letendre
- C07 - ORGANIC CHEMISTRY

George Helmut Klemm

Person

Patents Grantslast 30 patents

Preparation of sufentanil citrate and sufentanil base

Preparation of sufentanil citrate and sufentanil base

Process for the preparation of sufentanil base and related compounds

Processes for the preparation of 3-(4-(2,4-difluorobenzyloxy)-3-bro...

Synthesis of diaryl pyrazoles

Synthesis of diaryl pyrazoles

Patents Applicationslast 30 patents

PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE

PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE

PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE

PREPARATION OF SUFENTANIL CITRATE AND SUFENTANIL BASE

Process for the Preparation of Sufentanil Base and Related Compounds

PROCESSES FOR THE PREPARATION OF 3-(4-(2,4-DIFLUOROBENZYLOXY)-3-BRO...

SYNTHESIS OF DIARYL PYRAZOLES

Synthesis of diaryl pyrazoles