Robert Scott Mohr

US Patent:

7530239, May 12, 2009

Filed:

Jul 12, 2007

Appl. No.:

11/777112

Inventors:

Biprodas Dutta - Siver Spring MD, US
Ian L. Pegg - Alexandria VA, US
Robert K. Mohr - Washington DC, US

Assignee:

ZT3 Technologies, Inc. - Thousand Oaks CA

International Classification:

C03C 14/00
C03B 37/02
H01L 35/16
H01L 35/14

US Classification:

65442, 65444, 65475, 65477, 136238, 136239

Abstract:

The present invention provides a method of drawing nanowires, comprising sealing off one end of a glass tube such that the tube has an open end and a closed end, introducing a nanowire material inside the glass tube and evacuating the tube by attaching the open end to a vacuum pump, heating a portion of the glass tube such that the glass partially melts under the vacuum such that the partially melted glass tube provides an ampoule containing the nanowire material to be used in a first drawing operation, introducing the ampoule containing the nanowire material into a heating device, increasing the temperature within the heating device such that the glass tube melts just enough for it to be drawn and drawing fibers of glass clad nanowire material. The invention further provides a method for bunching together such fibers and redrawing them one or more times to produce arrays of nanowires clad in glass.

US Patent:

D2838940, May 20, 1986

Filed:

Jul 6, 1984

Appl. No.:

6/628598

Inventors:

Mark S. Gubser - Thornton CO
John R. Janczy - Boulder CO
Robert G. Mohr - Broomfield CO
William F. Prohaska - Northglenn CO

Assignee:

AT&T Information Systems Inc. - Holmdel NJ

US Classification:

D14114

US Patent:

45525773, Nov 12, 1985

Filed:

Apr 5, 1983

Appl. No.:

6/482231

Inventors:

Deepak Varshneya - Washington DC
Pedro B. Macedo - Bethesda MD
Robert K. Mohr - Washington DC

International Classification:

C03B 1908

US Classification:

65 22

Abstract:

The present invention is directed to a method and apparatus for forming shaped foamed-glass articles. Glass particles are introduced to a pressure vessel in the presence of water. A pressure is applied to the pressure vessel sufficient to permit entrapment of water during sintering and sufficient to prevent foaming at processing temperatures. The temperature of the glass is increased to cause the glass to sinter and entrap water. The temperature of the glass is then increased to its fining temperature (T. sub. F) for a sufficient time to fine the glass. The temperature of the glass is reduced to its pressure release temperature (T. sub. PR). The pressure on the glass containing water is then reduced such as by extrusion to cause controlled foaming of the glass to occur. The glass is then cooled preferably by annealing to form the shaped foamed-glass article, typically pipe insulation.