Patent ID: 6973389

Claim:
A method of producing a composition of matter according to a process essentially controlled by a set of n parameters X i affecting a set of k properties Y j characterizing the composition of matter, in which process at least some of said parameters X i involved exhibit interfering effects on the desired properties Y j , said method comprising: i) identifying an expected operational range of said process within which an optimal parameter value is likely to be found for each of said set of parameters X i , and selecting given parameter data for obtaining experimentally associated property data; ii) assigning values to a set of k property weights w j representing relative importance of said properties Y j for the characterization of said composition of matter; iii) establishing a property behavior mathematical relation for each one of said set of k properties Y j characterizing the composition of matter, said relation giving estimated property values Ye j for each said property Y j in terms of said parameters X i within said range from given parameter data and associated property data; iv) using said property weights w j and said property behavior mathematical relations for said set of k properties Y j characterizing the composition of matter to establish a goal function in terms of property weighted deviations between the estimated properties Ye j and corresponding specified goal values for said properties Y j ; v) minimizing the goal function to generate a set of n optimal parameter values for said parameters X i , wherein said property behavior mathematical relations for said set of k properties Y j characterizing the composition of matter are sufficient for the purposes of establishing said goal function; and vi) using said set of optimal parameter values in said process to produce said composition of matter.