Note  1 -- Summary of Significant Accounting Policies Note  2 -- Accounting Changes Note  3 -- Special Charges Note  4 -- Segment Information Note  5 -- Leases Note  6 -- Supplementary Income Statement Information Note  7 -- Provision for Income Taxes Note  8 -- Earnings Per Share Note  9 -- Supplementary Balance Sheet Information Note 10 -- Property, Plant and Equipment - Net Note 11 -- Deferred Income Taxes Note 12 -- Goodwill Note 13 -- Other Intangible Assets Note 14 -- Debt Note 15 -- Financial Instruments Note 16 -- Shareholder's Equity Note 17 -- Preferred Stock Note 18 -- Incentive Plans and Stock Options Note 19 -- Retirement Programs Note 20 -- Commitments and Contingencies Note 21 -- Quarterly Data (Unaudited)
 

NOTE 13. OTHER INTANGIBLE ASSETS

(Millions of dollars)
DECEMBER 31,	2003	2002
License/use agreements	$41	$33
Non-compete agreements	31	29
Patents and other	17	15
	89	77
Less: accumulated amortization	(33)	(27)
	$56	$50

There are no expected residual values related to these intangible assets. Total estimated annual amortization expense is as follows: 2004, $7 million; 2005, $7 million; 2006, $7 million; 2007, $6 million; 2008, $4 million; and $25 million thereafter.

The weighted average amortization period for intangible assets is approximately 9 years. Additions to other intangible assets for the year ended December 31, 2003 were approximately $8 million, and amortization expense for the years ended December 31, 2003, 2002 and 2001 was $7 million, $5 million and $4 million, respectively.