US 2009/0264642 A1Published application

Anhydrous crystal of bata-lactam compound and method for preparation thereof

OwnerAkihiro Shimabayashi, Shigetoshi Yaguchiinventors

Life of this patent

Estimating the term…

Abstract

The present invention provides anhydrous crystals of β-lactam compound represented by the formula: The β-lactam compound of the invention is produced by heating an aqueous solution of a salt of the β-lactam compound and adjusting the pH of the aqueous solution to 3 or lower. The β-lactam compound has excellent storage stability.

Claims4

Dependent claims

Anhydrous crystals of a β-lactam compound represented by formula (1):

Dependencies are inferred from the claim text.

Facts

Application: 12/457,746Filed 19 Jun 2009
Priority: JP 2001-1341871 May 2001
Published: 22 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C07D 499/00
Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a
A61P 31/04
Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics: antibacterial agents
C07D
Heterocyclic compounds
A61P
Therapeutic uses of medicines

Family

Application10/476,221Division · filed 5 Apr 2004
Application12/457,746Division
US 2004/0162277 A1Published application
US 7,674,898 B2Related patent
US 2009/0264642 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results