SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2015
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS [Abstract]  
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II

RESEARCH FRONTIERS INCORPORATED
VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2015, 2014, and 2013

      Balance at   Charged to          
      beginning of   costs and          
      period   expenses   Deductions   Balance
Description                    
                     
Allowance for uncollectible                    
royalty receivables:                    
 
December 31, 2015     $ 305,171   $ 324,286   $ -     $ 629,457
                                     
December 31, 2014     $ 173,921   $ 131,250   $ -     $ 305,171
                                     
December 31, 2013     $ 92,723   $ 81,198   $ -     $ 173,921

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