YashIVF 

If you are also one of those males likely to start a family late in life, you might like to know how it works.
First of all you need to find a sperm bank and provide a semen sample. The sample is then transferred to specially designed vials, and a cryo preservative compound is added to help protect the viability and health of the sperm during the process of freezing and subsequent thawing. The vials are placed in a special freezer the temperature of which, is gradually decreased to below freezing. The sperm bank will keep your samples frozen for as long as you want or need, allowing you to reverse the ticking of your biological parenthood clock. Data is available to show that healthy and normal babies have been conceived using sperm that has been frozen for up to 20 years.

For more details visit
http://www.yashivf.com/