Ex Parte Dando - Page 2



                 Appeal 2007-0086                                                                                     
                 Application 10/845,785                                                                               

                        We AFFIRM.                                                                                    
                        The Appellant claims a process for preparing a foundry shape which                            
                 comprises:  preparing a foundry mix comprising foundry aggregate, an acid-                           
                 curable resin, and a catalytically effective amount of an acid catalyst and                          
                 having a work time of 3-10 minutes; shaping the foundry mix into a foundry                           
                 shape; and partially or totally removing water from the foundry shape to                             
                 thereby improve the speed of cure of the acid-curable resin.  According to                           
                 Appellant, “[t]he novel aspect of this process is that water is partially or                         
                 totally removed from the foundry shape after it is shaped in the pattern”                            
                 (Specification 8).  This claimed subject matter is adequately illustrated by                         
                 independent claim 1 and dependent claim 40 which read as follows:                                    
                        1. A process for preparing a foundry shape comprising:                                        
                        A. preparing a foundry mix comprising a major amount of foundry                               
                 aggregate, an effective binding amount of an acid-curable resin, and a                               
                 catalytically effective amount of an acid catalyst and having a work time of                         
                 3-10 minutes;                                                                                        
                        B. then shaping the foundry mix into a foundry shape; and                                     
                        C. then partially or totally removing water from the foundry shape                            
                 to thereby improve the speed of cure of the acid-curable resin.                                      
                        40. The process claim 1, 16 or 28 wherein the foundry shape is                                
                 substantially cured within 15 minutes.                                                               
                        The references set forth below are relied upon by the Examiner as                             
                 evidence of unpatentability:                                                                         
                 Brown  US 3,184,814 May 25, 1965                                                                     
                 Lang   US 3,306,864 Feb. 28, 1967                                                                    
                 Marsden  US 4,782,102 Nov.  1, 1988                                                                  
                 Iyer   US 4,848,442 Jul. 18, 1989                                                                    
                                                          2                                                           



Page:  Previous  1  2  3  4  5  6  7  8  9  Next

Last modified: September 9, 2013