Answer:
amortization expense for the 4th year: 357,600
journal entry:
amortization expense 357,600 debit
patents 357,600 credit
Step-by-step explanation:
We have to determinate the amortization based on the useful life rather than legal life. Because, we can only use the patent to generate a positive cashflow during his useful life.
2,800,000 / 10 = 350,000 per year
balance after 3rd year:
2,800,000 - 350,000 x 3 = 1,750,000
The successfullly defense of a patent is capitalize into the patent account and amortizate over the remaining life of the patent.
Therefore, we add the defend: 1,750,000 + 38,000 = 1,788,000
The raiming life will be of 5 years
1,788,000 / 5 = 357,600 per year