Ordnance – Shields – Shape or composition
Reexamination Certificate
2006-04-11
2010-12-21
Johnson, Stephen M (Department: 3641)
Ordnance
Shields
Shape or composition
C423S291000
Reexamination Certificate
active
07854190
ABSTRACT:
A boron carbide body having a graphite content in which the central portion of the body includes more graphite that the region surrounding the central portion and adjacent the exterior surface thereof, and a method for fabricating the boron carbide body.
REFERENCES:
patent: 1703417 (1929-02-01), Donaldson
patent: 2027786 (1936-01-01), Ridgway et al.
patent: 3348967 (1967-10-01), Hucke
patent: 3715265 (1973-02-01), Allen et al.
patent: 3914371 (1975-10-01), Benton et al.
patent: 3977294 (1976-08-01), Jahn
patent: 4004934 (1977-01-01), Prochazka
patent: 4005235 (1977-01-01), Prochazka
patent: 4104062 (1978-08-01), Weaver
patent: 4195066 (1980-03-01), Schwetz et al.
patent: 4495123 (1985-01-01), Hunold et al.
patent: 4524138 (1985-06-01), Schwetz et al.
patent: 4704250 (1987-11-01), Cline et al.
patent: 4762810 (1988-08-01), Endo et al.
patent: 4784335 (1988-11-01), Huether
patent: 4804525 (1989-02-01), Rafaniello et al.
patent: 4879165 (1989-11-01), Smith
patent: 4946808 (1990-08-01), Wei et al.
patent: 4980104 (1990-12-01), Kawasaki
patent: 5010043 (1991-04-01), Ringwood
patent: 5089197 (1992-02-01), Butler et al.
patent: 5182059 (1993-01-01), Kawasaki et al.
patent: 5312788 (1994-05-01), Li et al.
patent: 5348694 (1994-09-01), Goldberger
patent: 5349893 (1994-09-01), Dunn
patent: 5505899 (1996-04-01), Sigl et al.
patent: 5523268 (1996-06-01), Ukyo et al.
patent: 5543370 (1996-08-01), Sigl et al.
patent: 5545687 (1996-08-01), Burns et al.
patent: 6609452 (2003-08-01), McCormick et al.
patent: 6613462 (2003-09-01), Macki et al.
patent: 6699450 (2004-03-01), Dunn et al.
patent: 6807891 (2004-10-01), Fisher
patent: 6855428 (2005-02-01), Lau et al.
patent: 2004/0065868 (2004-04-01), Aghajanian et al.
patent: 2004/0083880 (2004-05-01), Cohen
patent: 2004/0208772 (2004-10-01), Eiberger et al.
patent: 59-162180 (1984-09-01), None
patent: 62-153166 (1987-07-01), None
patent: 2000-154062 (2000-06-01), None
patent: WO 00/68165 (2000-11-01), None
Nihara, et al.; The Effect of Stoichiometry on Mechanical Properties of Boron Carbide; Communications of the American Ceramic Society; Jan. 1984; pp. C-13-C-14.
Lee et al.; Hardness and Fracture Toughness of Pressureless-Sintered Boron Carbide (B4C); J. AM. Ceram. Soc. 85 [5]; 2002; pp. 1291-1293.
Cho, et al., “Density- and hardness-optimized pressureless sintered and post-hot isostatic pressed B4C,” J. Mater. Res., vol. 20, No. 8 (Aug. 2005), pp. 2110-2116.
Edited by Onoda, Jr. and Hench; Ceramic Processing Before Firing; The Rheology of Organic Binder Solutions; pp. 249-251.
Characteristics and Properties of Silicon Carbide and Boron Carbide; Handbook of Refractory Carbides and Nitrides; pp. 137-155.
Champagne et al.; Mechanical Properties of Hot-Pressed B-B4C Materials; 1977; 4 pages.
M.A. Kuzenkova, P.S. Kislyi, B.L. Grabchuk and N.I. Bodnaruk, “The Structure and Properties of Sintered Boron Carbide” J. of Less-Common Metals 67 217-223 (1979).
Bouchacourt; et al.; The Properties and Structure of the Boron Carbide Phase; Journal of the Less-Common Metals; 1981; vol. 82; pp. 227-235.
J. Beauvy, “System B-C, Solid State Phase Equilibria” J. Less Common Metals, 90 [2] 169-75 (1983).
D. Emin, “Structure and Single-Phase Regime of Boron Carbide,” Phys. Rev. B, 31 6041-6054 (1988).
Z. Zakhariev and D. Radev, “Properties of Polycrystalline Boron Carbide Sintered in the Presence of W2B5without Pressing” J. Mater. Sci. Lett. 7 [7] 695-96 (1988).
S.L. Dole, S. Prochazka, and R.H. Doremus, “Microstructural Coarsening During Sintering of Boron Carbide” J. Am. Ceram. Soc. 72 [6] 958-66 (1989).
Francois Thévenot; Boron Carbide—A Comprehensive Review; Journal of the European Ceramic Society; 1990; 6; pp. 205-225.
D.J. Viechnicki, M.L. Savin and M.I. Illiman, Ceram. Bull., 70 1035 (1991).
Williams; Aqueous Dispersion and Slip Casting of Boron Carbide Powder: Effect of pH and Oxygen Content; J. Am. Ceram. Soc.; 1991; 74 [7]; pp. 1614-1618.
C.H. Lee, C.H. Kim, “Pressureless Sintering and Related Reaction Phenomena of A12O3-doped B4C” J. Mater. Sci. 27 [23] 6335-340 (1992).
V. Skorokhod Jr., M.D. Vlajic, and V.D. Krstic, “Mechanical Properties of Pressureless Sintered Boron Carbide Containing TiB2Phase” J. Mater. Sci. Lett., 15 [15] 1337-39 (1996).
M.W. Chase, Jr. NIST-JANAF Thermochemical Tables, 4th Ed., American Institute of Physics, Woodbury, NY 1998.
de Melo et al.; Composition Effects on the Microstructure and Mechanical Properties of Sintered Boron Carbide; Materials Science Forum; vols. 299-300; 1999; pp. 13-18.
Kalandadze et al.; Sintering of Boron and Boron Carbide; Journal of Solid State Chemistry; 2000; 154; pp. 194-198.
Larsson et al.; Improvements of the microstructure and erosion resistance of boron carbide with additives; Journal of Materials Science; 2000; vol. 35; pp. 3433-3440.
Lee et al.; Sintering of Boron Carbide Heat-Treated With Hydrogen; J. Am. Ceram. Soc.; 2002; 85 [8]; pp. 2131-2133.
Lee et al.; Pressureless Sintering of Boron Carbide; J. Am. Ceram. Soc.; 2003; 86 [9]; pp. 1468-1473.
Frage et al.; The effect of the sintering atmosphere on the densification of B4C ceramics; Journal of Solid State Chemistry; 2003; pp. 1-5.
Solid-State Sintering of Mixed Powders, Categorization of Physical and Chemical Interactions; pp. 178-221.
M.L. Wilkins, “Fourth Progress Report of Light Armor Program” Lawrence Livermore National Laboratory (1969).
Y. Kanno et al., “Additive Effect on Sintering of Boron Carbide”, The Ceramic Society of Japan, 95[11] 1137-1140 (1987).
R.C. Garvie, “Zirconium and Some of its Binary Systems”, High Temperature Oxides, Part II, Academic Press, New York 117-166 (1970).
R.M. German, Sintering Theory and Practice, John Wiley and Sons, New York, pp. 26-27, 74, 209-213 (1996).
Georgia Tech Research Corporation
Johnson Stephen M
Ostrolenk Faber LLP
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