Patents by Inventor Hans-Joachim Gais

Hans-Joachim Gais has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Method for the enzymatic resolution of the racemates of aminomethyl-aryl-cyclohexanol derivatives

Patent number: 7168937

Abstract: The invention relates to a process for the enzymatic cleavage of racemates of aminomethyl-aryl-cyclohexanol derivatives.

Type: Grant

Filed: January 18, 2001

Date of Patent: January 30, 2007

Assignee: Gruenenthal GmbH

Inventors: Helmut Buschmann, Dagmar Kaulartz, Carsten Griebel, Hans-Joachim Gais
Method for the enzymatic resolution of the racemates of aminomethyl-aryl-cyclohexanol derivatives

Publication number: 20030186396

Abstract: The invention relates to a process for the enzymatic cleavage of racemates of aminomethyl-aryl-cyclohexanol derivatives.

Type: Application

Filed: November 4, 2002

Publication date: October 2, 2003

Inventors: Helmut Buschmann, Dagmar Kaulartz, Carsten Griebel, Hans-Joachim Gais
Process for the production of E/Z mixtures of 2-(bicyclo[3.3.0]octan-3-ylidene)-acetic acid derivatives with predominant E or Z portion

Patent number: 5169960

Abstract: The invention relates to a process for the production of E/Z mixtures of 2-(bicyclo[3.3.0]octan-3-ylidene)-acetic acid derivatives of Formula I, ##STR1## in which either the E or the Z portion predominates.

Type: Grant

Filed: September 12, 1991

Date of Patent: December 8, 1992

Assignee: Schering Aktiengesellschaft

Inventors: Hartmut Rehwinkel, Helmut Vorbruggen, Hans-Joachim Gais, Gerhard Schmiedl, Jorg Bund
Process for the E/Z stereoselective synthesis of homochiral five and six ring intermediate products

Patent number: 4964846

Abstract: This invention comprises a process for the production of unsymmetrical olefins from prochiral symmetrical ketones by addition of lithiosulfoximine from n-butyllithium and N-substituted S-methyl-S-phenyl-sulfoximine derivatives and then reaction with n-butyllithium/trimethychlorosilane.

Type: Grant

Filed: November 21, 1988

Date of Patent: October 23, 1990

Assignee: Schering Aktiengesellschaft

Inventors: Hans-Joachim Gais, Irene Erdelmeier, Rolf Birk

Method for the enzymatic resolution of the racemates of aminomethyl-aryl-cyclohexanol derivatives

Method for the enzymatic resolution of the racemates of aminomethyl-aryl-cyclohexanol derivatives

Process for the production of E/Z mixtures of 2-(bicyclo[3.3.0]octan-3-ylidene)-acetic acid derivatives with predominant E or Z portion

Process for the E/Z stereoselective synthesis of homochiral five and six ring intermediate products