Ex Parte Shelton - Page 12



            1                                          (8)                                                        
            2               Mazer, U.S. Patent 6,251,432 B1, issued 26 June 2001                                  
            3          Mazer is prior art under 35 U.S.C. § 102(b).                                               
            4          In general, Mazer relates to a coating system for sustained release of                     
            5   an agent from a dosage form, and particularly to a dosage form unit having a                      
            6   latex coating for sustained release of what is characterized as a beneficial                      
            7   agent.  Col. 1, lines 6-9.                                                                        
            8          Apart from the principal ingredients of the dosage form, Mazer                             
            9   indicates (col. 10, lines 35-40) (emphasis added):                                                
          10                        Additional tableting aids also may be used to enhance                         
          11                  fabrication and construction of the core.  For example, and as                      
          12                  embodied herein, a standard flow agent, such as talc, colloidal                     
          13                  silica, or kaolin, is included to prevent tackiness, wherein                        
          14                  fumed silica commonly available under the trademark                                 
          15                  CAB-O-SIL from Cabot Corporation is preferred.                                      
          16                                                                                                      
          17                                           (9)                                                        
          18              Sue, U.S. Patent 6,667,059 B2, issued 23 December 2003                                  
          19           Sue is prior art under 35 U.S.C. § 102(e), Sue's filing date being                         
          20    30 May 2001.                                                                                      
          21           Sue teaches that CAB-O-SIL is anti-tacking agent.  Col. 13, Table 3.                       
          22           Sue also teaches that talc, one of applicant's other detackifiers, is also                 
          23    known as an anti-taking agent.  Col. 13, Table 3.                                                 
          24                                                                                                      
          25           Based on the new prior art references, we find that those skilled in a                     
          26    wide variety of arts would have known that CAB-O-SILŪ could be used to                            
          27    obviate tackiness.                                                                                

                                                       12                                                         

Page:  Previous  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  Next

Last modified: September 9, 2013