Gaseous dielectrics with low global warming potentials

Compositions – Fluent dielectric – Gaseous or gas-containing

Reexamination Certificate

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C252S067000, C252S068000, C252S069000

Reexamination Certificate

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07807074

ABSTRACT:
A dielectric gaseous compound which exhibits the following properties: a boiling point in the range between about −20° C. to about −273° C.; low ozone depleting; a GWP less than about 22,200; chemical stability, as measured by a negative standard enthalpy of formation (dHf<0); a toxicity level such that when the dielectric gas leaks, the effective diluted concentration does not exceed its PEL; and a dielectric strength greater than air.

REFERENCES:
patent: 2786804 (1957-03-01), Nelson
patent: 4257905 (1981-03-01), Christophorou et al.
patent: 4275260 (1981-06-01), Wootton
patent: 4288651 (1981-09-01), Wootton
patent: 4440971 (1984-04-01), Harrold
patent: 4547316 (1985-10-01), Yamauchi
patent: 4816624 (1989-03-01), Perrissin et al.
patent: 4871680 (1989-10-01), Barraud et al.
patent: 5236611 (1993-08-01), Shiflett
patent: 5918140 (1999-06-01), Wickboldt et al.
patent: 6886573 (2005-05-01), Hobbs et al.
patent: 6897396 (2005-05-01), Ito et al.
patent: 2002/0135029 (2002-09-01), Ping et al.
patent: 2002/0137269 (2002-09-01), Ping et al.
patent: 2003/0164513 (2003-09-01), Ping et al.
patent: 2005/0181621 (2005-08-01), Borland et al.
patent: 2006/0060818 (2006-03-01), Tempel et al.
patent: 2006/0133986 (2006-06-01), Dukhedin-Lalla et al.
patent: 2009/0211449 (2009-08-01), Olschimke et al.
patent: 0129200 (1984-12-01), None
patent: 1146522 X (2001-10-01), None
CAS Reg. No. 7647-19-0, Nov. 16, 1984.
Takuma, et al., “Gases as a Dielectric”, pp. 195-2004, Gaseous Dielectrics X, Springer, 2004.
Lutz Niemeyer, “A Systematic Search for Insulation Gases and Their Environmental Evaluation”; pp. 459-464, Gaseous Dielectrics VIII, 1998.
Christophorou, et al., “Gases for Electrical Insulation and Arc Interruption: Possible Present and Future Alternatives to Purse SF6”, NIST Technical Note 1425, Nov. 1997.
Shiojiri, et al., Abstract of “Life cycle impact assessment of various treatment scenarios for sulfur hexafluoride (SF6) used as an insulating gas”, Environmental Progress, 2006, 25(3), 218-227.
Shiojiri, et al., Abstract of “A Life cycle impact assessment study on sulfur hexafluoride (SF6) used as a gas insulator”, 2004, American Institute of Chemical Engineers, 005E/1-005E/9.
Goshima, et al., Abstract of “Estimation of cross-sectional size of gas-insulated apparatus using hybrid insulation system with SF6 substitute”, Gaseous Dielectrics X, 2004, pp. 253-258.
Telfer, et al., Abstract of “A novel approach to power circuit breaker design for replacement of SF6”, Centre for Intelligent Monitoring Systems, Dept. of Electrical Engineering and Electronics, 2004, 44(2), pp. 72-76.
Gustavino, et al., Abstract of “Performance of glass RPC operated in streamer mode with four-fold gas mixtures containing SF6”, Nuclear Instruments & Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 2004, 517(1-3), pp. 101-108.
Diaz, et al., Abstract of “Effect of the percentage of SF6(100%-10%-5%)on the decomposition of SF6-N2 mixtures under negative dc coronas in the presence of water vapour or oxygen”, Journal of Physics D: Applied Physics, 2003, 36(13), pp. 1558-1564.
Yanabu, et al., Abstract of “New concept of switchgear for replacing SF6 or gas mixture”, Gaseous Dielectrics IX, 9th, 2001, pp. 497-504.
Knobloch, et al., Abstract of “The comparison of arc-extinguishing capability of sulfur hexafluoride(SF6)with alternative gases in high-voltage circuit-breakers”, Gaseous Dielectrics VIII, 8th, 1998, pp. 565-571.
Tioursi, et al., Abstract of “Conditioning phenomena in N2, SF6, and air”, IEE Conference, 467 (High Voltage Engineering, vol. 3), 1999, pp. 3.212-3.215.
Christophorou, et al., Abstract of “SF6/N2 mixtures. Basic and HV insulation properties”, IEEE Transactions on Dielectrics and Electrical Insulation, 1995, 2(5), pp. 952-1003.
Pai, et al., Abstract of “Impulse breakdown of cis-octafluorobutene/sulfur hexafluoride and cis-octafluorobutene/sulfur hexaflouride
itrogen”, Gaseous Dielectr. Proc. Int. Sump., 2nd, 1980, pp. 190-199.
Devins, J.C., Abstract of “Replacement gases for sulfur hexafluoride”, IEEE Transactions on Electrical Insulation, 1980, EI-15-(2), pp. 81-86.
Devins, et al., Abstract of “Replacement gases for sulfur hexafluoride”, Annual Report—Conference on Electrical Insulation and Dielectric Phenomena, 1979, pp. 398-408.
Rhodes, et al., Abstract of “Assessment of the possible use of polythene/gas dielectrics in high-voltage cables”, Proc. Inst. Elec. Engrs., 1965, 112-*), pp. 1617-1624.
Howard, et al., Abstract of “Insulation properties of compressed electronegative gases”, Proc. Inst. Elec. Engrs., 1957, 104(Pt. A), pp. 123-138.

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