Proprietory concern is not an independent and legal person person - it is a unit of proprietor. Therefore, seperate PAN is not required. Seperate TAN is also not required. A PAN and TAN obtained for an individual carrying busines or profession in name of proprietory concern can use the samePAN and TAN.
He should take care to obtain TDS certficates in name of Proprietor. For this purpose every person who is to deduct tax from payments/ credit in favour of proprietory concern should be informed and requested to issue TDS certificates in name of proprietor instead of in name of proprietory concern.
Better course is that each invoice and other related documents should show name of concern and fact that it is proprietory concern of say P.
It is suggested to the CBDT that a record of proprietory concerns of PAN holder may be kept and each proprietory concern be tagged with the PAN // TAN of the Proprietor.