Who made the Amazon Kindle?
In fact there is no official information.
I'm sure it has not been done by amazon itself. There is answer
on Wikipedia: Foxconn. See related link below.
The Kindle was definitely a group effort of many minds pooling together to create this product, therefore it is hard to pinpoint a certain person. The e-ink, which moves around the screen to create the images that create the words was developed at MIT. the e-ink uses very little energy to mover, and once it is in place, it uses no energy to sustain its position on the screen.
There is no such thing as a "Kindle iPad". Kindle and iPad are two completely different things maded by two completely different companies. The kindle is an eReader. The iPad is a tablet. You can purchase (or find free) ebooks for the Kindle via the official Kindle store on Amazon. Amazon owns Kindle. See the related link below for some ebooks on Amazon.