Ceradyne, Inc. to Release 2004 Results on March 4, 2005

COSTA MESA, Calif.--Feb. 2, 20055, 2005--Ceradyne, Inc. will release financial results for the fourth-quarter and year ended December 31, 2004, before the market open on Friday, March 4, 2005. The Company will also hold a teleconference to review the Company's financial results and strategic outlook.

Any investor or interested individual can listen to the teleconference, which is scheduled to begin at 8:30 a.m. PST (11:30 a.m. EST) on March 4. To participate in the teleconference, please call toll-free 877-869-7690 (or 706-758-0239 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 beginning at 11:30 a.m. PST on March 4 through midnight on March 10, 2005. The playback can be accessed by calling 800-642-1687 (or 706-645-9291 for international callers) and providing Conference ID 3993347.

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.