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Last Updated: December 23, 2024

Claims for Patent: 7,135,571

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Summary for Patent: 7,135,571

Title:	Processes for preparing anhydrous and hydrate forms of antihistaminic piperidine derivatives, polymorphs and pseudomorphs thereof
Abstract:	The present invention is related to novel processes for preparing anhydrous and hydrated forms of piperidine derivatives, polymorphs and pseudomorphs thereof of the formulas ##STR00001## which are useful as antihistamines, antiallergic agents and bronchodilators.
Inventor(s):	Henton; Daniel R (Midland, MI), McCarty; Frederick J (Cincinnati, OH), Tripp; Susan I (Lee's Summit, MO), DeWitt; Jill E (Kansas City, MO)
Assignee:	Aventis Pharmaceuticals, Inc. (Bridgewater, NJ)
Application Number:	10/160,883
Patent Claims:	1. Form II hydrated 4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-.alpha.,.a- lpha.-dimethylbenzeneacetic acid hydrochloride.

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