Robert P Pfeffer Deceased308 Main St #1324, New Rochelle, NY 10801

7537803, May 26, 2009

Apr 7, 2004

10/820091

Yulu Wang - Harrison NJ, US
Robert Pfeffer - Teaneck NJ, US
Rajesh Dave - Short Hill NJ, US

New Jersey Institute of Technology - Newark NJ

B05D 7/00
C08J 7/16
B01J 19/10
B29B 9/08

427212, 427214, 427215, 427220, 427532, 427560, 264 41, 264 5, 264 7, 264 9, 264 11

A process, method and/or system for preparing polymer-coated nanoparticles and/or other ultrafine particles utilizing a supercritical fluid, e. g. , supercritical carbon dioxide (SC CO), as an antisolvent that may be added to a solution of a polymer and an organic solvent in which insoluble nanoparticles or the like are suspended. The coating process occurs when the supercritical fluid (e. g. , SC CO) and the nanoparticle-containing suspension are combined to cause the suspended nanoparticles to precipitate as coated nanoparticles. Processing parameters for optimizing and/or enhancing the efficacy and/or efficiency of the coating process, method and/or system and for controlling the coating and/or agglomeration of coated particles are also described. The process, method and/or system has wide ranging applicability, e. g. , for coating and/or encapsulation of pharmaceuticals, cosmetics, food products, chemicals, agrochemicals, pesticides, polymers, coatings, catalysts and the like.

7645327, Jan 12, 2010

May 2, 2006

11/416034

Robert Pfeffer - Teaneck NJ, US
Rajesh Dave - Short Hill NJ, US
Stanislav Dukhin - Goldens Bridge NY, US
Jose A. Quevedo - Brick NJ, US
Qun Yu - South Bound Brook NJ, US

New Jersey Institute of Technology - Newark NJ

B01D 29/02

96108, 96134, 96135, 96139, 96152, 96153, 95 90, 95274, 977773, 977775, 977776, 977777, 977778, 55434, 55512, 55522, 55524

Systems and methods for achieving filtration are provided that utilize agglomerates or granules of nanoparticles. The agglomerates or granules of nanoparticles may be used as and/or incorporated into a HEPA filtration system to remove solid or liquid submicron-sized particles, e. g. , MPPS, in an efficient and efficacious manner. The filtration systems and methods are provided that utilize agglomerates or granules in a size range of about 100-500 microns. The agglomerates or granules of nanoparticles exhibit a hierarchical fractal structure. In the case of agglomerates of nanoparticles, porosities of 0. 9 or greater are generally employed, and for granules of nanoparticles, porosities that are smaller than 0. 9 may be employed. Filter media formed from the agglomerates or granules may be formed from materials such as carbon black and fumed silica, and may be employed in baffled or non-baffled filtration apparatus.

7658340, Feb 9, 2010

Nov 28, 2006

11/605176

Robert Pfeffer - Fort Lee NJ, US
Caroline H. Nam - Budd Lake NJ, US
Rajesh N. Dave - Short Hills NJ, US
Guangliang Liu - Wilmington DE, US
Jose A. Quevedo - Brick NJ, US
Qun Yu - South Bound Brook NJ, US
Chao Zhu - Edison NJ, US

New Jersey Institute of Technology - Newark NJ

B02C 19/00
B02C 19/06

241 1, 241 5

With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. A magnetic force and/or pre-treatment may be employed with the fluidizing gas and, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The magnetic force interacts with non-fluidizing magnetic particles and helps to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by improved performance-related attributes. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.

8163114, Apr 24, 2012

Apr 7, 2004

10/819898

Costas Gogos - Wyckoff NJ, US
Rajesh Dave - Short Hills NJ, US
Robert Pfeffer - Teaneck NJ, US
David Todd - West Windsor NJ, US
Bainian Qian - Newark NJ, US
Theodore Davidson - Princeton NJ, US

New Jersey Institute of Technology - Newark NJ

D03D 23/00

1491096

Techniques and processes that combine particulate coating processes with particulate handling steps resulting in the formation of free-flowing particulates for introduction into energetic product vessels to affect an in-situ, net-shape manufactured product. The processes involve selecting suitably sized materials, processing such materials such that they are surface-coated and/or locally “structured” particulates, and pouring, preferably “dry” pouring, these processed materials into an energetic product vessel and infusing the filled vessel with a polymerizable and surface-compatible monomer or oligomer which flows into the unoccupied volume, followed by polymerization of the monomer, which then becomes the binder giving mechanical integrity to the final, net-shape energetic composition.

2005022, Oct 13, 2005

Jun 28, 2004

10/878656

Costas Gogos - Wyckoff NJ, US
Rajesh Dave - Short Hills NJ, US
Robert Pfeffer - Teaneck NJ, US
Theodore Davidson - Princeton NJ, US
David Todd - West Windsor NJ, US
Bainian Qian - Newark NJ, US
Jun Yang - Kearny NJ, US

C08K007/00
C10L005/00

523220000, 044500000

Techniques and methods of formation of ordered mixtures of particles by “clustering”. Clustering comprises local “structuring” consisting of a large “host” and smaller “guest” particles by various techniques. Small amounts of polymer are coated onto solid particles by various means. In one embodiment, an ordered mixture is created wherein the material that is of lesser quantity is of small particle size (the “B” particles) and the “A” particles are of larger size. The “B” particles are then coated onto a single A particle. By creating this ordered structure, each composite particle has the proper or stoichiometric amount of all ingredients. This dry composite material produced is appropriately used in various applications such as pharmaceutical formulations in the form of tablets, capsules, oral suspensions, inhalant, parenteral formulations and the like; energetics manufacture such as but not limited to explosives, propellants and pyrotechnics; agricultural products including but not limited to fertilizers, herbicides and pesticides; nutritional supplements and the like.

2006008, Apr 27, 2006

Jul 27, 2004

10/900868

Robert Pfeffer - Fort Lee NJ, US
Caroline Nam - Budd Lake NJ, US
Rajesh Dave - Short Hills NJ, US
Guangliang Liu - Wilmington DE, US
Jose Quevedo - Brick NJ, US
Qun Yu - South Bound Brook NJ, US
Chao Zhu - Edison NJ, US

B02C 19/06

241005000

With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. Multiple external fields and/or pre-treatment may be employed with the fluidizing gas: sieving, magnetic assistance, vibration, acoustic/sound or rotational/centrifugal forces. Any of these forces, either alone or in combination, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The additional force(s) help to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by at least one of the following performance-related attributes: reduced levels of bubbles within the fluidized system, reduced gas bypass relative to the fluidized bed, smooth fluidization behavior, reduced elutriation, a high level of bed expansion, reduced gas velocity levels to achieve desired fluidization performance, and/or enhanced control of agglomerate size/distribution. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.

6197369, Mar 6, 2001

Sep 30, 1999

9/409137

Satoru Watano - Osaka, JP
Robert Pfeffer - Teaneck NJ
Rajesh N. Dave - Wayne NJ

New Jersey Institute of Technology - Newark NJ

B05D 124
B05D 304
B05D 312

427213

Coater for coating particles is provided with a casing and a cylinder having apertures rotatably mounted within the casing. Gas is blown into the casing and onto the host particles through the slots of the cylinder. Guest particles may be inserted into the casing initially or subsequently after rotation of the cylinder begins. The particles are fluidized when a balance is attained between the centrifugal force from the rotation of the cylinder and the force exerted upon the particles from the air flow. The centrifugal force exerted on the particles within the cylinder in an operating state is at least about 25 gs so as to cause guest particles of different sizes to be coated onto the host.