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Goodwill And Other Intangible Assets
6 Months Ended
Jun. 30, 2011
Goodwill And Other Intangible Assets  
Goodwill And Other Intangible Assets
11.      Goodwill and Other Intangible Assets

The carrying amount of goodwill by segment for the six months ended June 30, 2011 is as follows (in millions):
 
Telecom-
munications
 
Display
Technologies
 
Specialty
Materials
 
Life
Sciences
 
Total
                   
Balance at December 31, 2010
$118      
 
$9
 
$150
 
$260    
 
$537  
Acquired goodwill (1)
91      
             
91  
Foreign currency translation adjustment
           
4    
 
4  
Balance at June 30, 2011
$209      
 
$9
 
$150
 
$264    
 
$632  

(1)  The Company recorded goodwill associated with a small acquisition completed in the first quarter of 2011.

Corning's gross goodwill balances for the periods ended June 30, 2011 and December 31, 2010 were $7.1 billion and $7.0 billion, respectively.  Accumulated impairment losses were $6.5 billion for the periods ended June 30, 2011 and December 31, 2010, and were generated entirely through goodwill impairments related to the Telecommunications segment.

Other intangible assets are as follows (in millions):
 
June 30, 2011
 
December 31, 2010
 
Gross
 
Accumulated
amortization
 
Net
 
Gross
 
Accumulated
amortization
 
Net
Amortized intangible assets:
                                 
Patents, trademarks, and trade names (1)
$
229
 
$
129
 
$
100
 
$
205
 
$
124
 
$
81
Non-competition agreements (2)
                   
97
   
94
   
3
Customer lists and other (1)
 
163
   
12
   
151
   
98
   
3
   
95
                                   
Total
$
392
 
$
141
 
$
251
 
$
400
 
$
221
 
$
179


Amortized intangible assets are primarily related to the Telecommunications and Life Sciences segments.

Amortization expense related to these intangible assets is estimated to be $14 million for 2011 and $15 million thereafter.