KSV Restructuring Inc., in a report filed Friday, said some of those non-binding offers would enable the deeply indebted companies to continue operating as viable businesses. More than 250 prospective purchasers and potential investors were sent so-called teaser letters and non-disclosure agreements advising them of the sale process. The next step is for KSV to conduct a due diligence process that will determine which bidders will be asked to submit binding offers by May 24 at 5 p.m.