Daniel D Rose

US Patent:

54610141, Oct 24, 1995

Filed:

Jan 13, 1994

Appl. No.:

8/182705

Inventors:

Mike S. Chu - Lewistown NY
Daniel C. Rose - Ransomville NY
John Bultitude - Banbury, GB

Assignee:

TAM Ceramics, Inc. - Niagara Falls NY

International Classification:

C04B 3500
C04B 3520
C04B 3546

US Classification:

501135

Abstract:

A ceramic composition which includes Pb(Mg. sub. 1/3 Nb. sub. 2/3)O. sub. 3 or the oxide precursors thereof, in admixture with barium copper oxide of the formula BaCuO. sub. 2 as a sinter aid therefor. The compositions do not contain any free lead oxide and have high dielectric constants, e. g. above 8000, and low loss factors, e. g. below 3%.

US Patent:

45060266, Mar 19, 1985

Filed:

Dec 23, 1983

Appl. No.:

6/564885

Inventors:

Charles E. Hodgkins - Lewiston NY
Daniel C. Rose - Ransomville NY
Dana L. Coller - Clemson SC

Assignee:

TAM Ceramics, Inc. - Niagara Falls NY

International Classification:

C04B 3546
H01B 312

US Classification:

501135

Abstract:

A low fired, temperature compensating dielectric composition is disclosed. The invention dielectric is formed of a base ceramic and a frit material. The base ceramic includes magnesium oxide, titanium oxide, calcium oxide, alumina, silica and at least one oxide of a rare element from the group of niobium, neodymium, tantalum, lanthanum, yttrium and praseodymium. The preferred oxides are those of niobium alone or with neodymium.

US Patent:

45406766, Sep 10, 1985

Filed:

May 23, 1984

Appl. No.:

6/613250

Inventors:

Mike S. H. Chu - Lewiston NY
Charles E. Hodgkins - Lewiston NY
Daniel C. Rose - Ransomville NY

Assignee:

TAM Ceramics - Niagara Falls NY

International Classification:

C04B 3546

US Classification:

501138

Abstract:

A low temperature fired ceramic dielectric composition in which the dielectric constant does not vary from its base value of over 2400 by more than 15 percent over a wide temperature range. A base ceramic preparation (a) and a ceramic flux (b), each consisting essentially of metal oxides or precursors thereof to provide in oxide form (a) 98. 0 to 99 weight percent barium titanate, from about 0. 97 to about 1. 54 weight percent niobium pentoxide and from about 0. 19 to about 0. 32 weight percent cobalt oxide; (b) from about 16 to about 60 weight percent bismuth titanate, about 8 to about 52 weight percent lead titanate, about 18 to about 35 weight percent zinc oxide and about 5 to about 11 weight percent boron oxide. Manganese dioxide or precursor thereof in amount of from about 0 to 0. 114 percent of the combined weight of the base ceramic preparation and ceramic flux is added to the metal oxides or precursors of the base ceramic preparation and ceramic flux and the mixture is fired at a temperature less than about 1150. degree. C.