Process for producing elemental selenium nanospheres

Details Process for producing elemental selenium nanospheres Process for producing elemental selenium nanospheres

2011-08-23

2011-08-23

Vanoy, Timothy C (Department: 1734)

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

C424S780000, C424S702000, C977S773000, C977S810000

Reexamination Certificate

active

08003071

ABSTRACT:
The invention relates to microbiological processes using non-selenium-respiring bacteria for the production of elemental selenium nanospheres having a size in the 50-500 nm range and compositions comprising said nanospheres. The invention further concerns grey elemental selenium nanospheres directly obtainable by the processes of the invention. The compositions and materials of the invention are useful, in particular, as food additives and for use as raw material in the microelectronic and optical industries.

REFERENCES:
patent: 2007/0077238 (2007-04-01), Teo et al.
patent: 2010/0189634 (2010-07-01), Prokisch et al.
patent: 2171034 (2001-07-01), None
Yoonsoon Shin et al. “Synthesis and stabilization of selenium nanoparticles on cellulose nanocrystal” Materials Letters vol. 61 (2007) pp. 4297-4300.
T. L. Gerrard et al. “Deteection of Selenium Deposits inEscherichia coliby Electron Microscopy” Journal of Bacteriology, Sep. 1974, vol. 119, No. 3, pp. 1057-1060.
Carlos Garbisu et al. “Bacterial reduction of selenite to elemental selenium” Chemical Geology, vol. 132, (1996), pp. 199-204.
CN 10195461 A published Jan. 2, 2008 (English abstract only).
CN 1947540 A published Apr. 18, 2007 (English abstract only).
CN 1803012 A published Jul. 19, 2006 (English abstract only).

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