Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2008-04-18
2009-10-27
Kopec, Mark (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C423S641000, C429S231000
Reexamination Certificate
active
07608206
ABSTRACT:
A non-lead composition for use as a thick-film resistor paste in electronic applications. The composition comprises particles of Li2RuO3of diameter between 0.5 and 5 microns and a lead-free frit. The particles have had the lithium at or near primarily the surface of the particle at least partially exchanged for atoms of other metals.
REFERENCES:
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patent: 2001-266875 (2001-09-01), None
patent: 2002-101903 (2002-04-01), None
patent: 2002-198203 (2002-07-01), None
patent: 2003-197405 (2003-07-01), None
Kobayashi et al “Structure and charge/discharge characteristics of new layered oxides:Li1.8Ru0.6Fe0.6O3 and Li2IrO3”, Journal of Power Sources 68 (1997) 686-691.
Felner et al “The Magnetic behavior of Li2Mo3 (M=Mn, Ru and Ir) and Li2(Mn1−xRux)O3”, Condensed Matter 2001, 1-10, arXiv:cond-mat/0111211, Nov. 12, 2001.
Fukaya et al., Highly Reliable and Lead (Ph) Free Thick Film Resistor Paste System for Low Thermal Expansion LTCC Application, 1997 International Symposium on Microelectronics, 1997, pp. 65-71.
Hormadaly, 2002 International Symposium on Microelectronics, New Lead-Free Thick Film Resistors, IMAPS Symposia Proceedings, 2002, pp. 543-547.
James et al., Structure and Bonding in Lithium Ruthenate, Li2RuO3, Journal of Solid State Chemistry, 1988, vol. 74:287-294.
Kobayashi; Structure and Lithium Deintercalation of Li2-xRu03; Solid State Ionics 82 (1995) 25-31; Elsevier; New York.
Kim; Structural and Magnetic Properties of New Rocksalt-Related Compounds of Ruthenium Li2(M1/2Ru1/2)03, M=Fe, Co, Ni; Journal of Alloys and Compounds 201 (1993) 85-98; Elsevier-Sequoia; New York.
Written Opinion of the International Searching Authority in PCT/U52009/040786; Jul. 17,2009.
Hang Kenneth Warren
VerNooy Paul Douglas
Walker Alfred T.
E.I. duPont de Nemours & Company
Kopec Mark
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