What are the general rules related to the amortization of intangible assets ? Read the basis for

Question:

What are the general rules related to the amortization of ? Read the basis for conclusions in SFAS No. 142, particularly paragraphs B49 through B53. What were the amortization rules for intangibles prior to the passage of SFAS No. 142? In the 1999 Exposure Draft for SFAS No. 142, FASB had suggested that 20 years be a presumptive maximum. That is, a life longer than 20 years could only be used if the longer life is based on legal life or exchangeability of the asset. What did the board conclude with regard to this issue and why did they reach that conclusion?
Intangible Assets
An intangible asset is a resource controlled by an entity without physical substance. Unlike other assets, an intangible asset has no physical existence and you cannot touch it.Types of Intangible Assets and ExamplesSome examples are patented...