Dr. Singh and Packaging Research Associates developed the first hinged clamshell that also had a vented bottom section as well as vents in the lid. The project was funded by Driscoll Strawberries and was developed in association with Sambrillo Packaging and Packaging Corporation of America. It allowed Driscoll to make the entire industry shift from a quart and pint size containers to 1 pound of strawberries and 6 oz. of raspberries.