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Patent for License:

Technique to Prepare Metallic Nanoparticle    

Process for preparing mono-dispersed particles of metal like gold, platinum, palladium or silver.


Nano-size particles of metal with a controlled particle size and dispersed stable in water can be achieved using the reducing agent shell cross-linked micelle.

Patent Summary

U.S. Patent Classes & Classifications Covered in this Patent:

Class 516: Colloid Systems And Wetting Agents; Subcombinations Thereof; Processes Of Making, Stabilizing, Breaking, Or Inhibiting

Subject matter provided for in this class: colloid systems (also called colloid dispersions or colloid suspensions) of the following six systems (dispersed phase/continuous phase): solid/liquid; solid/gas; liquid+/solid; liquid/liquid; liquid/gas; gas/liquid (+liquid in gels may be dispersed or continuous in the continuous solid phase); wetting agents (compositions for wetting surfaces, including spreading, penetrating, or leveling); subcombination compositions of colloid systems or wetting agents containing at least an agent specialized and designed for or peculiar to use in making or stabilizing colloid systems or in wetting agents, which includes: (a) compositions fully compounded for and intended to be made into a colloid system, such as an assemblage of compounds merely requiring non-material input (such as agitation) to effect a colloid system; (b) compositions consisting of a potential dispersand* combined with a colloid system making or stabilizing agent; (c) compositions consisting of a mixture of colloid system making or stabilizing agents, or, of one such agent* and an adjuvant*, or, of a mixture of adjuvants, in each instance the composition lacking both the material to be dispersed and the material in which it is to be dispersed, including thickening, suspending, stabilizing agents, or protective colloid compositions.

Subclass 100: The organic material coats, impregnates, or surface modifies solid inorganic material (e.g., dextrin modified clay)
Subclass 97: The material primarily contains elemental platinum group metal, copper, silver, or gold, or compound thereof

Class 264: Plastic And Nonmetallic Article Shaping Or Treating: Processes

Processes for molding, casting, or shaping of nonmetallic materials to produce articles. Liquid or melt comminuting of materials other than glass or metal. Uniting or compacting of bulk or randomly assembled particles. Furnace Lining or repair. Melt shaping in the absence of a mold or shaping surface, e.g., spheroidizing of particles. Working or treatment of nonmetallic materials not otherwise provided for.

Subclass 7: Coated particles

Class 428: Stock Material Or Miscellaneous Articles

This is the residual class for: 1. Stock material in the form of a structurally defined web, sheet, rod, strand, fiber, filament, cell, flake, particle not provided elsewhere. 2. Stock material in the form of a web, sheet, mass or layer which consists of or contains a structurally defined constituent or element. 3. A nonstructural laminate defined merely in terms of the composition of one or more layers. 4. An article of manufacture or an intermediate-article not provided for elsewhere. 5. A process for applying an impregnating material to a naturally solid product such as a wood beam, a sheet of leather or a stone, or for applying a coating to a base, and which process includes no significant method step.

Subclass 407: Including synthetic resin or polymer

Class 524: Synthetic Resins Or Natural Rubbers -- Part Of The Class 520 Series

Part of the Class 520 Series - some general types of subject matter include: Solid synthetic resins, per se, regardless of utility; processes of preparing a synthetic resin involving a chemical reaction; reactable compositions which form a product; processes of purifying a solid synthetic resin or composition containing a synthetic resin by a chemical or physical process; process of reclaiming or recovering a solid synthetic resin; processes of treating a synthetic resin or specified intermediate condensation product with a reactant, or product thereof; blends of solid synthetic resins, processes of preparing or treating such blends; chemically reacted solid synthetic resins or processes of preparing; potentially reactable compositions which contain a solid synthetic resin or SICP and products of such a reaction, or processes of preparing; room vulcanizable potentially reactive compositions which merely require moisture and which are usually activated by heat and/or pressure to form a product; compositions of a nonreactant material and a solid synthetic resin or SICP; compositions containing a structurally defined material which is dispersed in a matrix which is not identified by overall dimension or some structure or processes of preparing; single-layered products containing a solid synthetic resin or composition thereof reciting no structure or dimension, or a fiber, filament, etc., which is no more than the material from which it is made, nonstructured single-layered web or sheet is encompassed; particles or a powder, per se, of a solid synthetic resin or composition thereof for which particles or powder no dimensions are recited; reactable compositions which form a product proper for this class and contain a photoinitiator or photosensitizer which are activated by wave energy or processes of preparing.

Subclass 588: From silicon-containing reactant

Class 977: Nanotechnology

This art collection provides for disclosures related to: nanostructure and chemical compositions of nanostructure; device that include at least one nanostructure; mathematical algorithms, e.g., computer software, etc., specifically adapted for modeling configurations or properties of nanostructure; methods or apparatus for making, detecting, analyzing, or treating nanostructure; and specified particular uses of nanostructure. the term "nanostructure" is defined to mean an atomic, molecular, or macromolecular structure that: has at least one physical dimension of approximately 1-100 nanometers; and possesses a special property, provides a special function, or produces a special effect that is uniquely attributable to the structure s nanoscale physical size.

Subclass 777: Metallic powder or flake

European Patent Classes & Classifications Covered in this Patent:

Class B22F9: Performing Operations; Transporting - Casting; Powder Metallurgy

Working metallic powder; manufacture of articles from metallic powder; making metallic powder. Making metallic powder or suspensions thereof.

Class B01J13: Performing Operations; Transporting - Physical Or Chemical Processes Or Apparatus In General

Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus. Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; making micro-capsules or micro-balloons.

Class B22F1: Performing Operations; Transporting - Casting; Powder Metallurgy

Working metallic powder; manufacture of articles from metallic powder; making metallic powder. Special treatment of metallic powder, e.g. to facilitate working, to improve properties ; metallic powders per se, e.g. mixtures of particles of different composition.