Notes to Consolidated Financial Statements Becton, Dickinson and Company

4 Other Intangible Assets

Other intangible assets at September 30 consisted of:

  2006 2005
  Gross
Carrying
Amount
  Accumulated
Amortization
  Gross
Carrying
Amount
  Accumulated
Amortization
 
Amortized intangible
   assets
                       
Core and developed
   technology
      $ 377,633            $ 132,822         $ 274,615            $ 109,234  
Patents, trademarks,
   and other
  337,176     254,717     338,575     246,060  
  $ 714,809   $ 387,539   $ 613,190   $ 355,294  
Unamortized intangible
    assets
                       
Trademarks $ 9,042         $ 9,043        

     Intangible amortization expense was $36,088, $33,405 and $31,467 in 2006, 2005 and 2004, respectively. The estimated aggregate amortization expense for the fiscal years ending September 30, 2007 to 2011 are as follows: 2007- $41,600; 2008-$36,800; 2009-$33,900; 2010-$31,500; 2011-$29,800.