Ex Parte HUMMEL - Page 11



          Appeal No. 1997-0144                                                        
          Application No. 08/424,223                                                  

          rejected under 35 U.S.C.  103 as being unpatentable over                   
          Bettcher in view of the admittedly known normal strength fiber or           
          yarn VECTRAN M described in appellant's specification at pages 2-           
          4.  Bettcher discloses a cut-resistant yarn (Fig. 1) having the             
          construction broadly set forth in claim 1 on appeal, with the               
          exception that this patent does not disclose or teach that "at              
          least one of" the core, first wrapping and second wrapping of the           
          composite yarn therein be comprised of a liquid crystal polymer             
          fiber having a tenacity of no more than 10 grams per denier.                
          However, Bettcher does teach that the yarn therein has a second             
          wrapping or winding (14) which is preferably one having low                 
          friction, light weight, a silk-like hand, that is fast drying,              
          resistant to light and low in cost, preferably, for example,                
          nylon or a polyester (e.g., Dacron), both of which are recognized           
          as normal strength fibers.  Similarly, appellant's specification            
          (pages 2-4) and brief (pages 13-14)1 indicate that VECTRAN M sold           
          by Hoechst Celanese Corp. is a normal strength fiber having good            
          abrasion resistance, high impermeability, excellent property                
          retention over a broad temperature range, low moisture                      

               1 While appellant indicates on page 13 of the brief that a             
          brochure on VECTRAN liquid crystal polymer fibers was submitted             
          to the examiner, we find no such brochure of record in the                  
          application file.                                                           
                                         11                                           




Page:  Previous  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  Next 

Last modified: November 3, 2007