Pharmaceutical and cosmetics giant Johnson & Johnson may be the sole defendant in an estimated 12,700 talcum powder asbestos cancer lawsuits after its main talc supplier recently filed for bankruptcy under the weight of thousands of such cases across the country. Imerys Talc USA, which had supplied Johnson & Johnson with talc sourced from overseas mines, filed for Chapter 11 bankruptcy in a Delaware federal court and was subsequently released as a defendant from a nearly two-month trial in California state court.