David Herzberg was alarmed when he heard that Richard Sackler, former chairman of opioid giant Purdu ...: There may be an issue with the delivery of your newspaper. This alert will expire at NaN. Click here for more info. .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... David Herzberg was alarmed when he heard that Richard Sackler, former chairman of opioid giant Purdue Pharma, was listed as an inventor on a new patent for an opioid addiction treatment. Patent No.