Hi,
For that it will require customizations in the product / listing view in the backend template.
It require good PHP knowledges to handle the save of the values etc, calling custom controllers...
What I recommend for this kind of things is to use our Mass Actions system, in System > Mass actions create a new action with the data "product" and in the action, select "Display the results", check the desired fields to display.
This will display a dynamic table listing your entries, and when double clicking on a field, you can edit the value and it will save it in database