If not, determine your local distributor for that manufacturer and ask him. You can also ask the mail order distributors, like DigiKey and Farnell etc. Usually people will try to help you. You can also post your message on the ChipDir Message Board . See the main page for more of them.
Site is in Russian, but the chip data is mostly in English.
You want a description or the manufacturer of a strange chip. Always check the numerical and prefix listings in the ChipDir first. Then subscribe to the ChipDir Mailing List and ask there. You can also post your message on the ChipDir Message Board . Give the manufacturer or describe the logo.