Fuel and related compositions – Liquid fuels – Heterocyclic carbon compound containing a hetero ring having...
Reexamination Certificate
2007-02-27
2007-02-27
Cole, Monique T. (Department: 1743)
Fuel and related compositions
Liquid fuels
Heterocyclic carbon compound containing a hetero ring having...
C044S628000, C044S357000, C044S385000, C044S388000, C044S437000, C044S438000, C044S439000, C044S450000, C512S001000
Reexamination Certificate
active
10495609
ABSTRACT:
The present invention provides an odorant suitable for use in fuel gases, such as liquefied natural gas (LNG), city gas, and LP gas, or methane gas, propane gas, butane gas and hydrogen gas. Preferably, the present invention provides a novel odorant that can also be used for fuel gases for fuel cells, including hydrogen gas. The odorant for fuel gases of the present invention has a perceptual threshold of 1 ppb or less, and includes a compound that has no sulfur atoms and no nitrogen atoms in its molecules. The odorant for fuel gases of the present invention is suitable for use in fuel cells that use hydrogen gas or other gases as a fuel.
REFERENCES:
patent: 6800104 (2004-10-01), Rosenbaum
Cole Monique T.
DLA Piper (US) LLP
Soda Aromatic Co., Ltd.
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