Patent ID: 7603297
Filing Date: 2009-10-13
Classification: G06Q

Abstract:
1. A computer implemented inventory management method for controlling amounts of stocks, the method comprising the steps of: storing, in a memory, delivery times and quantities of order lots accepted and restock lead times predetermined for every item; selecting, with a controller, at least one order lot accepted, having a delivery time within a period from “b” days before to “a” days after a basic time, from said order lots accepted, to set a threshold value x+yσ classifying, with the controller, at least one order lot accepted having a quantity α of the selected order lot(s) accepted as a normal accepted order lot(s), wherein the α is less than or equal to said threshold value; and calculating, with the controller, a basic stock using a predetermined formula from said classified normal accepted order lot(s), wherein said calculating the basic stock using the predetermined formula comprises: calculating an order point “r” and the basic stock β using following equations: where “z” signifies an average shipping quantity per day of an order lot, having a delivery time within a period from the basic time to “a” days after, of said normal accepted order lot(s), “c” represents the restock lead time, “t” is an order differential time delay, “m” is equal to or greater than 1, σ when d+e≦r, where “d” signifies a present amount of a stock and “e” represents a quantities on order, calculating a required order quantity “f” using an equation f=β−(d+e−cz).