Financial Aid & Admission Process

I know caltech is Need Aware for International students, but still it provides aid for international freshmen.
Caltech admits roughly 230 students & 10% International so around 23 students would be international. Also caltech accepts roughly 650 students so around 65 students would be international. So how much of these international students get financial aid ? Does any international student ever got full ride ? I do need full ride as my parents income is around $20,000.
Does caltech admission committee completely read the essays of students?
Which is better a research paper or patent? I know most students submit research papers published in international peer reviewed journals. But I sent detailed papers for 3 of my patents which are pending which I have done independently. How would this be viewed? And those patents are extremely good and I recently signed a $100,000 deal with a local company for setting up my project on large scale.
My SAT I score is 1850. And how much this very low score will impact my application? Will I be a direct reject without looking other parts of my application?