It’s only a few months since iRobot filed for bankruptcy , but it has now re-emerged under new ownership and announced eight new Roomba models. The company which invented robot vacuum cleaners 23 years ago has been taken over by its primary manufacturer in China … iRobot was the US company which invented a product category which is now ubiquitous – robot vacuum cleaners. Sadly, the business struggled to keep pace with an ever-growing range of competitors offering more affordable products, and it went into voluntary bankruptcy at the end of last year. The company said at the time that the business would be taken over by its primary manufacturer in China, Shenzhen PICEA Robotics. That indeed happened, and the reborn business has just announced eight new models. iRobot’s new owners say that these combine improved performance with smaller sizes.…