Ceradyne, Inc. to Release 2004 First-Quarter Results on April 22, 2004

COSTA MESA, Calif.--April 15, 2004--Ceradyne, Inc. will release financial results for the first-quarter ended March 31, 2004, on the morning of Thursday, April 22. The Company will also hold a teleconference to review the results and the Company's financial and strategic outlook.

Any investor or interested individual can listen to the teleconference, which is scheduled to begin at 8 a.m. PDT (11 a.m. EDT) on April 22. To participate in the teleconference, please call toll-free 877-869-7690 (or 706-634-1478 for international callers) approximately 10 minutes prior to the above start time.

You may also listen to the teleconference live via the Internet at www.ceradyne.com or www.FullDisclosure.com. For those unable to attend, these web sites will host an archive of the call.

A telephone playback will be available for 48 hours beginning at 11 a.m. PDT on April 22. The playback can be accessed by calling 800-642-1687 (or 706-645-9291 for international callers) and providing Conference ID 6682725.

Ceradyne develops, manufactures and markets advanced technical ceramic products and components for defense, industrial, automotive/diesel and commercial applications. Additional information about the Company can be found at www.ceradyne.com.