Mid-K LTCC compositions and devices

US9892853B2 · kind B2 · utility

Assignee

• Ferro Corporation · US

Inventors

• Walter J. Symes, Jr. · Dundee, US
• Gregory R. Prinzbach · Brecksville, US
• John J. Maloney · South Burlington, US
• James E. Henry · Carlsbad, US
• Orville W. Brown · Lansdale, US
• Srinivasan Sridharan · Strongsville, US
• Yie-Shein Her · Canandaigua, US
• Stanley Wang · Taipei, TW
• George E. Graddy, Jr. · Del Mar, US
• George E. Sakoske · Washington, US

Key dates

• Filing date: Jun 12, 2015
• Grant date: Feb 13, 2018
• Expiry date: Jun 12, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/77
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.