- 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
            
 
            - 
                
                
                    
                        3424775
                    
                                            
                                - 
                                    Patent number 3,424,775
                                
 
                                - 
                                    Issue date Jan 28, 1969
                                
 
                        
                                                                
                                - 
                                        
                                    C07 - ORGANIC CHEMISTRY
                                 
                        
                 
             
            - 
                
                
                    
                        3251871
                    
                                            
                                - 
                                    Patent number 3,251,871
                                
 
                                - 
                                    Issue date May 17, 1966
                                
 
                        
                                                                
                                - 
                                        
                                    C07 - ORGANIC CHEMISTRY
                                 
                        
                 
             
            - 
                
                
                    
                        3198818
                    
                                            
                                - 
                                    Patent number 3,198,818
                                
 
                                - 
                                    Issue date Aug 3, 1965
                                
 
                        
                                                                
                                - 
                                        
                                    C07 - ORGANIC CHEMISTRY
                                 
                        
                 
             
            - 
                
                
                    
                        3198819
                    
                                            
                                - 
                                    Patent number 3,198,819
                                
 
                                - 
                                    Issue date Aug 3, 1965
                                
 
                        
                                                                
                                - 
                                        
                                    C07 - ORGANIC CHEMISTRY
                                 
                        
                 
             
            - 
                
                
                    
                        2718522
                    
                                            
                                - 
                                    Patent number 2,718,522
                                
 
                                - 
                                    Issue date Sep 20, 1955
                                
 
                        
                                                                
                                - 
                                        
                                    C07 - ORGANIC CHEMISTRY