I understand a remote car starter works within the free range band
(around 300 to 450 MHz). I also know that you must associate your FOB
with your remote car starter, so your neighbor won?t start your
vehicle and vice versa.

I would like to know exactly how they work, i.e., the starter and the
FOB together.  What protocol are they using to communicate (details)? 
My interest is how the RF signal differs from one manufacturer to the
other and from one FOB to the other.  This may include Amplitude,
frequency, frequency hoping and/or encryption.

Also, please provide details of the FOB signals for as many remote car
starters as possible.  Additionally, please provide names of ?Remote
Car Starter Manufactures? and their corporate addresses.  "Contact
names wherever possible".

Well seems to me like you want to know a little bit more than needed
in this subject. but I'll tell u basically that a remote controlled
relay. Along with simple frequency. Starts the vehicle.  If you want
to find out more, get a frequency scanner. Sorry cannot give you more
info.