Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2007-10-30
2007-10-30
McNeil, Jennifer (Department: 1775)
Stock material or miscellaneous articles
Composite
Of metal
Reexamination Certificate
active
10655986
ABSTRACT:
Novel, monodispersed, spherical ZrO2particles in the size range of approximately 10 to approximately 600 nm exhibiting metastable tetragonal crystal structure at room temperature and novel methods of preparation. The ZrO2particles are approximately 100% in the tetragonal phase at room temperature and can be pure and free of foreign oxides. The novel method can include mixing zirconium-alkoxide and an alcohol, forming preparation one, followed by separately dissolving completely de-ionized water and a polymeric steric stabilizer in an alcohol forming preparation two. Next the preparations can be mixed with vigorous stirring while subjecting the materials to hydrolysis and condensation reactions with very slow stirring. Next, there is waiting for the formation of a sol from the mixture, followed by drying at approximately 80 degrees C. to form resultant material followed by crushing the resultant material.
REFERENCES:
patent: 5002909 (1991-03-01), Montino et al.
patent: 5472795 (1995-12-01), Atita
patent: 5800934 (1998-09-01), Qadri
patent: 6007926 (1999-12-01), Provenzano
patent: 6017839 (2000-01-01), Majumdar
patent: 6168833 (2001-01-01), Leushake et al.
patent: 6203768 (2001-03-01), McCormick
patent: 6376590 (2002-04-01), Kolb
patent: 6387981 (2002-05-01), Zhang
patent: 6482537 (2002-11-01), Strangman
patent: 6652987 (2003-11-01), Allen et al.
(2003) S. Shukla, S. Seal, R. Vij & S. Bandyopadhyay. Polymer Surfactant Incorporated Ceramic Oxide Nanoparticles. Rev. Adv. Matter. Sci 4, pp. 109.
(2002) S. Shukla, S. Seal, R. Vij & S. Bandyopadhyay. Effect of HPC and Water Concentration on the Evolution of Size, Aggregation and Crystallization of Sol-Gel Nano Zirconia. Journal Nanoparicle Research 4: pp. 553-559.
(2003) S. Shukla, S. Seal, VanFleet. Sol-Gel Synthesis and Phase Evolution Behavior of Sterically Stabilized Nanocrystalline Zirconia. Journal of Sol-Gel Science and Technology 27, pp. 119-136.
(2002) S. Shukla, S. Seal, R. Vij, S. Bandyopadhyay & Z. Rahman. Effect of Nanocrystallite Morphology on the Metastable Tetragonal Phase Stabilization in Zirconia. Nano Letters vol. 2, No. 9 American Chemical Society pp. 989-993.
(2003) S. Shukla, S. Seal, R. Vij, S. Bandyopadhyay. Reduced Activation Energy for Grain Growth in Nanocrystalline Yttria-Stabilized Zirconia. . Nano Letters vol. 2, No. 9, American Chemical Society pp. 397-401.
Seal Sudipta
Shukla Satyajit
Law Offices of Brian S. Steinberger , P.A.
McNeil Jennifer
Miller Daniel
Morlin Joyce P.
Steinberger Brian S.
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