Thomas H Tillotson DeceasedFairfield, CA

6749826, Jun 15, 2004

Jun 5, 2002

10/163720

Thomas M. Tillotson - Tracy CA
Brian D. Andresen - Livermore CA
Armando Alcaraz - Fremont CA

The Regents of the University of California - Oakland CA

D01F 912

4234472, 4234471, 96154, 95141, 502416, 428368

Airborne or aqueous organic compound collection using carbon nanotubes. Exposure of carbon nanotube-coated disks to controlled atmospheres of chemical warefare (CW)-related compounds provide superior extraction and retention efficiencies compared to commercially available airborne organic compound collectors. For example, the carbon nanotube-coated collectors were four (4) times more efficient toward concentrating dimethylmethyl-phosphonate (DMMP), a CW surrogate, than Carboxen, the optimized carbonized polymer for CW-related vapor collections. In addition to DMMP, the carbon nanotube-coated material possesses high collection efficiencies for the CW-related compounds diisopropylaminoethanol (DIEA), and diisopropylmethylphosphonate (DIMP).

6986818, Jan 17, 2006

Oct 16, 2001

09/981076

Thomas M. Tillotson - Tracy CA, US
Randall L. Simpson - Livermore CA, US
Lawrence W. Hrubesh - Pleasanton CA, US
Alexander Gash - Livermore CA, US

The Regents of the University of California - Oakland CA

C06B 45/10

149 1992, 524431, 524 80

A synthetic route for producing nanostructure metal-oxide-based materials using sol-gel processing. This procedure employs the use of stable and inexpensive hydrated-metal inorganic salts and environmentally friendly solvents such as water and ethanol. The synthesis involves the dissolution of the metal salt in a solvent followed by the addition of a proton scavenger, which induces gel formation in a timely manner. Both critical point (supercritical extraction) and atmospheric (low temperature evaporation) drying may be employed to produce monolithic aerogels and xerogels, respectively. Using this method synthesis of metal-oxide nanostructured materials have been carried out using inorganic salts, such as of Fe, Cr, Al, Ga, In, Hf, Sn, Zr, Nb, W, Pr, Er, Nd, Ce, U and Y. The process is general and nanostructured metal-oxides from the following elements of the periodic table can be made: Groups 2 through 13, part of Group 14 (germanium, tin, lead), part of Group 15 (antimony, bismuth), part of Group 16 (polonium), and the lanthanides and actinides. The sol-gel processing allows for the addition of insoluble materials (e. g.

6986819, Jan 17, 2006

Apr 24, 2003

10/422488

Thomas M. Tillotson - Tracy CA, US
Randall L. Simpson - Livermore CA, US
Lawrence W. Hrubesh - Pleasanton CA, US

The Regents of the University of California - Oakland CA

D03D 23/00

1491096, 149 37

A method of preparing energetic metal-oxide-based energetic materials using sol-gel chemistry has been invented. The wet chemical sol-gel processing provides an improvement in both safety and performance. Essentially, a metal-oxide oxidizer skeletal structure is prepared from hydrolyzable metals (metal salts or metal alkoxides) with fuel added to the sol prior to gelation or synthesized within the porosity metal-oxide gel matrix. With metal salt precursors a proton scavenger is used to destabilize the sol and induce gelation. With metal alkoxide precursors standard well-known sol-gel hydrolysis and condensation reactions are used. Drying is done by standard sol-gel practices, either by a slow evaporation of the liquid residing within the pores to produce a high density solid nanocomposite, or by supercritical extraction to produce a lower density, high porous nanocomposite. Other ingredients may be added to this basic nanostructure to change physical and chemical properties, which include organic constituents for binders or gas generators during reactions, burn rate modifiers, or spectral emitters.

5409683, Apr 25, 1995

Jul 7, 1994

8/272432

Thomas M. Tillotson - Tracy CA
John F. Poco - Livermore CA
Lawrence W. Hrubesh - Pleasanton CA
Ian M. Thomas - Livermore CA

Regents of the University of California - Oakland CA

C01B 3312

423338

A two-step hydrolysis-condensation method was developed to form metal oxide aerogels of any density, including densities of less than 0. 003g/cm. sup. 3 and greater than 0. 27g/cm. sup. 3. High purity metal alkoxide is reacted with water, alcohol solvent, and an additive to form a partially condensed metal intermediate. All solvent and reaction-generated alcohol is removed, and the intermediate is diluted with a nonalcoholic solvent. The intermediate can be stored for future use to make aerogels of any density. The aerogels are formed by reacting the intermediate with water, nonalcoholic solvent, and a catalyst, and extracting the nonalcoholic solvent directly. The resulting monolithic aerogels are hydrophobic and stable under atmospheric conditions, and exhibit good optical transparency, high clarity, and homogeneity. The aerogels have high thermal insulation capacity, high porosity, mechanical strength and stability, and require shorter gelation times than aerogels formed by conventional methods.

5275796, Jan 4, 1994

Sep 5, 1991

7/754349

Thomas M. Tillotson - Tracy CA
John F. Poco - Livermore CA
Lawrence W. Hrubesh - Pleasanton CA
Ian M. Thomas - Livermore CA

Regents of the University of California - Oakland CA

C01B 3312
B01J 2100

423338

A two-step method is described for making transparent aerogels which have a density of less than 0. 003 g/cm. sup. 3 to those with a density of more than 0. 8 g/cm. sup. 3, by a sol/gel process and supercritical extraction. Condensed metal oxide intermediate made with purified reagents can be diluted to produce stable aerogels with a density of less than 0. 02 g/cm. sup. 3. High temperature, direct supercritical extraction of the liquid phase of the gel produces hydrophobic aerogels which are stable at atmospheric moisture conditions. Monolithic, homogeneous silica aerogels with a density of less than 0. 02 to higher than 0. 8 g/cm. sup. 3, with high thermal insulation capacity, improved mechanical strength and good optical transparency, are described.