ALEXANDRIA, Va., June 25 -- United States Patent no. 12,340,419, issued on June 24, was assigned to ICE Data Services Inc. (Bedford, Mass.).

"Method and apparatus for providing after tax valuation of tax-exempt bonds" was invented by Andrew J. Kalotay (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are disclosed for determining valuation and risk analysis of municipal debt instruments on an after-tax basis. In one embodiment, bond terms, yield curve and interest rate volatility data are received for a set of bonds. Additionally, IRS treatment data and applicable tax rates for the set of bonds and a purchaser of the bonds are also received. Theoretical tax-neutral values of the bo...