William J Morrison

US Patent:

20050129634, Jun 16, 2005

Filed:

Dec 16, 2003

Appl. No.:

10/737357

Inventors:

Scott Frerichs - Smyrna DE, US
William Morrison - Wilmington DE, US

International Classification:

B05D007/00
B05D001/36
C09C001/36
A61K007/42

US Classification:

424059000, 427221000, 427402000, 427372200, 428404000, 106442000, 106446000

Abstract:

The invention is directed to a method for reducing the chemical activity and photo activity of titanium dioxide nanoparticles comprising adding a densifying agent, such as citric acid, to an aqueous slurry of the titanium dioxide nanoparticles; treating the aqueous slurry with a source of silica, such as a solution of sodium silicate, to form silica treated titanium dioxide nanoparticles; treating the silica treated titanium dioxide nanoparticles with a source of alumina, such as a solution of sodium aluminate, to form silica and alumina treated titanium dioxide nanoparticles. The titanium dioxide nanoparticles described herein are useful in cosmetic, coating and polymer compositions.

US Patent:

20050135994, Jun 23, 2005

Filed:

Dec 14, 2004

Appl. No.:

11/011670

Inventors:

Scott Frerichs - Hockessin DE, US
William Morrison - Wilmington DE, US

International Classification:

B05D007/00
B01J031/00
B01J027/053

US Classification:

423610000, 427212000, 502158000, 502217000, 502208000, 502150000

Abstract:

The invention is directed to a method for reducing the chemical activity and photo activity of titanium dioxide nanoparticles comprising adding a densifying agent, such as citric acid, to an aqueous slurry of the titanium dioxide nanoparticles; treating the aqueous slurry with a source of alumina, such as a solution of sodium aluminate, to form alumina-treated titanium dioxide nanoparticles. In one embodiment the particles are treated with a source of silica, such as a solution of sodium silicate. The nanoparticles of this invention can also be treated with a source of silica and a source of alumina. The treated nanoparticles can be silanized. The titanium dioxide nanoparticles described herein are useful in cosmetic, coating and thermoplastic compositions.

US Patent:

20060124888, Jun 15, 2006

Filed:

Dec 9, 2004

Appl. No.:

11/008368

Inventors:

William Morrison - Wilmington DE, US

International Classification:

C04B 35/00
B32B 27/00

US Classification:

25206230Q, 428405000

Abstract:

The invention is directed to a method for silica-treating semiconductors, particularly photoactive semiconductors such as BaTiO3, ZnO, and ZnS. The process comprises adding a densifying agent, such as citric acid, to an aqueous slurry of the semiconductor particles; treating the aqueous slurry with a source of silica, such as a solution of sodium silicate, to form silica-treated semiconductor particles; treating the silica-treated semiconductor particles with a source of alumina, such as a solution of sodium aluminate, to form silica- and alumina-treated photoactive semiconductor particles. The treated particles of this invention can be used in high dielectric constant compositions for use in thick films and castable tape for making multilayer circuits. The treated semiconductor particles are stable in dispersions and resist dopant leaching during high temperature processing.

US Patent:

20060178445, Aug 10, 2006

Filed:

Dec 9, 2005

Appl. No.:

11/299126

Inventors:

Patrick Mcintyre - West Chester PA, US
William Morrison - Wilmington DE, US
John Gavenonis - Wilmington DE, US

International Classification:

C09D 5/16

US Classification:

523122000

Abstract:

The invention relates to an improved composition for generating at least one gas comprising an energy-activated catalyst capable of being activated by electromagnetic energy, heat and/or moisture and anions capable of being oxidized or reacted to generate at least one gas, the composition, when exposed to electromagnetic energy, heat and/or moisture being capable of generating and releasing the gas after activation of the catalyst and oxidation or reaction of the anions. The process comprises: (a) metering a liquid composition comprising a source of the anions, specifically sodium chlorite, into a flow restrictor; (b) injecting a gas stream through the flow restrictor, concurrently with step (a) to create a zone of turbulence at the outlet of the flow restrictor, thereby atomizing the liquid composition; (c) heating the gas stream prior to injecting the gas stream through the flow restrictor; and (d) adding the energy-activated catalyst, specifically titanium dioxide, to the zone of turbulence concurrently with steps (a) and (b) to contact the energy-activated catalyst with the atomized liquid composition wherein the contacting at the zone of turbulence treats the energy-activated catalyst with the source of the anions. The titanium dioxide can be pigmentary or nano-sized. The composition can be useful in polymeric composition, specifically for making a body covering article.

US Patent:

20060264552, Nov 23, 2006

Filed:

May 23, 2005

Appl. No.:

11/135584

Inventors:

Scott Frerichs - Hockessin DE, US
William Morrison - Wilmington DE, US
Douglas Spahr - Wilmington DE, US

International Classification:

C08K 3/22

US Classification:

524432000

Abstract:

The disclosure is directed to a method for reducing the chemical activity and photo activity of titanium dioxide nanoparticles comprising adding an amorphous alumina-stabilizing agent, specifically an anion, such as citric acid, to an aqueous slurry of the titanium dioxide nanoparticles; treating the aqueous slurry with a source of alumina, such as a solution of sodium aluminate, to form alumina-treated titanium dioxide nanoparticles; recovering the alumina-treated inorganic nanoparticles, wherein the nanoparticles have a particle size of about 50 to about 300 nm; and milling the nanoparticles to form nanoparticles having a particle size about 15% smaller than silica-treated inorganic nanoparticles milled under similar conditions. The titanium dioxide nanoparticles described herein are useful in cosmetic, coating and thermoplastic compositions.

US Patent:

20080085967, Apr 10, 2008

Filed:

Aug 6, 2007

Appl. No.:

11/890399

Inventors:

Scott Frerichs - Smyrna DE, US
William Morrison - Wilmington DE, US
Douglas Spahr - Wilmington DE, US

International Classification:

C08K 3/22
C01F 11/02
C01F 7/02
C01G 23/04
C09K 3/00
C01G 25/02
C01G 9/02

US Classification:

524437000, 252182350, 423594120, 423594140, 423594160, 423598000, 423600000, 423625000

Abstract:

The disclosure is directed to a method for reducing the chemical activity and photo activity of titanium dioxide nanoparticles comprising adding an amorphous alumina-stabilizing agent, specifically an anion, such as citric acid, to an aqueous slurry of the titanium dioxide nanoparticles; treating the aqueous slurry with a source of alumina, such as a solution of sodium aluminate, to form alumina-treated titanium dioxide nanoparticles; recovering the alumina-treated inorganic nanoparticles, wherein the nanoparticles have a particle size of about 50 to about 300 nm; and milling the nanoparticles to form nanoparticles having a particle size about 15% smaller than silica-treated inorganic nanoparticles milled under similar conditions. The titanium dioxide nanoparticles described herein are useful in cosmetic, coating and thermoplastic compositions.

US Patent:

20120136381, May 31, 2012

Filed:

Nov 16, 2009

Appl. No.:

13/146589

Inventors:

William B. Morrison - Philadelphia PA, US
Dan Akerfeldt - Uppsala, SE

Assignee:

APRIO MEDICAL AB - Uppsala

International Classification:

A61B 17/34

US Classification:

606185

Abstract:

The invention is directed to a steerable mandrel comprising a stationary part and a movable part. The stationary part comprises a tubular sleeve having a mantle wall with a longitudinal semi-circumferential opening or weakening, which divides the stationary part into a proximal portion located on a proximal side of the longitudinal semi-circumferential opening or weakening and a distal portion located on distal side of the longitudinal semi-circumferential opening or weakening. The movable part comprises a rod-like member, which is slidable within the proximal portion of the stationary part. The movable part is attached to distal portion of the stationary part, such that relative movement of the movable part in relation to the stationary part causes a bending of the mandrel.

US Patent:

20120178470, Jul 12, 2012

Filed:

Dec 20, 2011

Appl. No.:

13/331761

Inventors:

Wyatt T. Riley - Chesterbrook PA, US
William J. Morrison - San Diego CA, US
Ning Luo - Cupertino CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 24/00

US Classification:

4554561

Abstract:

A position fix of a mobile device is computed based, at least in part, on a plurality of data items. A metric that is indicative of a reliability of the position fix may be generated based, at least in part, on a number of independent ones of the data items and/or an indication of reliability of at least one of the data items. In at least one implementation, the plurality of data items may include SPS satellite signals and/or pseudoranges and an externally obtained position.