These are ones selected by their companies for various reasons, or those on public registers. IBM will not tell you about every individual they employ.
No, but IBM does provide you with a directory from which you can search for and contact their employees:
http://www.ibm.com/contact/employees/us/en/?lnk=fai-edir-usenI don't think people here are asking you to divulge every employee's information; however, they are asking for key personnel. You cite over 120 years of combined experience, but offer nothing to back that statement up. Who is your CEO, and what is his/her background? Who is your Senior Architect? Who are your software/hardware lead designers?
Introduce your potential customers to your team. Provide evidence that you have the knowledge and capabilities to produce the products you've proposed. Even a profile such as, "Our lead hardware designer has over 15 years of experience in chip design. He has worked at Motorola and Intel, contributing to the design of ..." would go a very long way to alleviate some of the concerns being expressed.