IP Library › Granted Patent US 7,138,524
Granted Patent B2
US 7,138,524 · App. 10/162,011 · Granted Nov 21, 2006

Processes for preparing anhydrous and hydrate forms of antihistaminic piperidine derivatives, polymorphs and pseudomorphs thereof

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Quick Facts
Patent No.
US 7,138,524
App. No.
10/162,011
Granted
Nov 21, 2006
Kind
B2
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 which are useful as antihistamines, antiallergic agents and bronchodilators.

Claims (1)

1. Form I anhydrous 4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-α,α-dimethylbenzeneacetic acid hydrochloride.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 2, 2010
From: AVENTIS HOLDINGS INC.
To: AVENTISUB II INC.
Reel/Frame 024006/0487 →
CHANGE OF NAME Recorded Nov 29, 2007
From: HMR PHARMA INC.
To: AVENTIS HOLDINGS INC.
Reel/Frame 020174/0006 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2007
From: AVENTIS PHARMACEUTICALS INC.
To: HMR PHARMA INC.
Reel/Frame 020119/0606 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 19, 2003
From: CARR, ALBERT A.
To: AVENTIS PHARMACEUTICALS, INC.
Reel/Frame 014827/0710 →