A federal judge dismissed suits against Carbide.

The lawsuits charged that Union Carbide failed to warn investors of hazards at its subsidiary’s plant in Bhopal, India, where a gas leak killed 2,000 people. The ruling by U.S. District Judge John F. Keenan said the stockholders had failed to show that alleged omissions in the company’s prospectuses and annual reports had rendered the documents misleading. His ruling rejected several stockholder suits, consolidated in court, in which individual investors had sought class-action status against the firm.