Patents by Inventor Stanley Walter Walinsky

Stanley Walter Walinsky 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).

Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol

Patent number: 6645986

Abstract: The present invention is directed to a process for the preparation of the mesylate trihydrate of the (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol compound having the formula (I): The present invention is also further comprises a process for enantiomeric resolution and isolation of the (D)-(−)-tartrate salt of the compound of the formula (I).

Type: Grant

Filed: April 23, 2001

Date of Patent: November 11, 2003

Assignee: Pfizer Products, Inc.

Inventors: Stanley Walter Walinsky, Terry Gene Sinay, Jr., Joseph Philip Rainville
Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol and intermediates useful therefor

Patent number: 6570018

Abstract: The present invention is directed to a novel process for the preparation of the mesylate trihydrate of the compound of formula (I), (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol: The present invention is further directed to a process for the preparation of a (2S)-(+)-compound of formula (II): wherein R1 is a protecting group. In addition, the present invention relates to intermediates useful in said processes.

Type: Grant

Filed: April 23, 2001

Date of Patent: May 27, 2003

Assignee: Pfizer Inc

Inventors: Stanley Walter Walinsky, Terry Gene Sinay, Jr., Joseph Philip Rainville
Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol and intermediates useful therefor

Publication number: 20020016466

Abstract: The present invention is directed to a novel process for the preparation of the mesylate trihydrate of the compound of formula (I), (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol: 1

Type: Application

Filed: April 23, 2001

Publication date: February 7, 2002

Inventors: Stanley Walter Walinsky, Terry Gene Sinay, Joseph Philip Rainville
Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol

Publication number: 20020016465

Abstract: The present invention is directed to a process for the preparation of the mesylate trihydrate of the (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy4-phenylpiperidin-1-yl)-1-propanol compound having the formula (I): 1

Type: Application

Filed: April 23, 2001

Publication date: February 7, 2002

Inventors: Stanley Walter Walinsky, Terry Gene Sinay, Joseph Philip Rainville
Alatrofloxacin parenteral compositions

Patent number: 6194429

Abstract: The present invention relates to alatrofloxacin mesylate substantially free of less polar impurities, to parenteral compositions of alatrofloxacin mesylate and to processes for purifying alatrofloxacin mesylate.

Type: Grant

Filed: October 27, 1999

Date of Patent: February 27, 2001

Assignee: Pfizer Inc

Inventors: Robert Mark Guinn, John Francis Lambert, Subramanian Sam Guhan, Stanley Walter Walinsky

Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol

Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol and intermediates useful therefor

Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol and intermediates useful therefor

Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol

Alatrofloxacin parenteral compositions