How should we sell our technology?

Firstly determine clear ownership, assigning to a corporate holding entity including all documentation and any trade secrets. Prepare for due dilligence identifying what specific intangibles there are patents, copyright, trademarks. Try to determine an independent valuation by 3rd party. Then like any other sales process, identify prospects, pitch and prepare to close with either sale of the existing company (which may include your time) or exclusive licensing. Legalwise its a matter of making sure all the documentation, assignments, and contract of sale is airtight.