Master Dynamic Limited

Goldway Technology Limited

Chow Tai Fook Jewellery Company Limited

Microtechne Research & Development Center Ltd.

Tianjin Sea-Gull Watch Co. Ltd.

Psp Security Company Limited

Ching Tom Kong

Yingnan Wang

Zhuonan Miao

Koon Chung Hui

Ho Ching

Ka Wing Cheng

Wing Chi Tang

Juan Cheng

Ying Nan Wang

Woon Ming Lau

Sui Kong Hark

Guang Li Ma

Ka Wai Wong

Chik Yun Ian Kwan

Wing Yan Lee

Chun Yan Dominique Lau

Shunan Miao

A process of assigning a colour grade to a diamond, including the steps of (i) determining the N3 and C-center content of a diamond (); (ii) comparing the N3 and C-center content of the diamond with a previously acquired data set from a plurality of diamonds each having a colour grading previously assigned thereto, and (iii) assigning a colour grade to the diamond upon a correlation of the N3 and C-center content of said diamond with a grade of said previously acquired data set; wherein said previously acquired data set comprises a correlation between N3 and C center content and optical absorbance in the visible light spectrum for each diamond of said plurality of diamonds.

Gemstone colour grading process and grading system

An apparatus for coating at least a first plurality of articles each article thereof having at least a first surface to be coated is disclosed. The apparatus includes an emission source for directing emission elements towards the first surfaces of the plurality of articles, at least one support member for supporting the first plurality of articles, wherein support member supports the first plurality of articles such that the first surface is exposed to the path of emission from said emission source, and a drive assembly for moving the support member such that the first plurality of articles is moveable with respect to the path of emission from said emission source.

Apparatus, device and process for coating of articles

A process of providing an antibacterial coating to the surface of an article including the steps of applying a layer of an antibacterial precursor layer to the surface of an article to which an antibacterial coating is to be applied, wherein said antibacterial precursor layer is a precursor from which the coating is to be formed; and directing a neutral molecular hydrogen flux from a neutral molecular hydrogen flux emission source towards the surface of the article. Upon impact of neutral hydrogen molecules on molecules at or on the surface of an article, the bonds of the antibacterial precursor layer are selectively ruptured, and wherein the selectively ruptured bonds cross-link with themselves or with other chemical moieties at said surface or a combination thereof, resulting an antibacterial coating being formed on the surface of the article.

Process for coating of articles

A method of forming a non-optically detectable identifiable mark at an outer surface of an article formed from a solid state material, said method including the steps of forming a plurality of recesses within a predetermined region of a photoresistapplied to an outer surface of an article formed from a solid state material, wherein said plurality of recesses is formed by two-photon absorption lithography and wherein said one or more recesses extend at least partially through the photoresist and from an outer surface of the photoresist and towards said outer surface of the articleformed from a solid state material; and applying an etching process such that at least a portion of the outer surface of said article is exposed and etched so as to form a plurality of etched portions extending into said article from the outer surface of the article and corresponding to said plurality of recesses; wherein said predetermined region of said photoresist defines an identifiable mark to be applied to the outersurface of said article; wherein said plurality of etched portions forms the nonoptically identifiable mark on the outer surface of said article; and wherein the maximum width of the etched portions of is less than 200 nm such that the identifiable mark is non-optically detectable in the visible light spectrum.

Method of marking a solid state material, and solid state materials marked according to such a method

A mold for imparting a marking including a requisite optical element has two and a half dimensions (2.5D) to the outer surface of an article formed from a ductile material. The mold includes a marking surface for imparting the mark to an outer surface of the article. That imparting is done by localized plastic deformation of the material from which the article is formed upon the mold and the article being urged against each other. The marking surface includes a micro-structure formed by an arrangement plural micro meter sized recessed or protruded entities. The entities are arranged in a predetermined arrangement in relation to each other, and the entities are arranged as a micro-structure having two and a half dimensions (2.5D). The entities are arranged in an inverse arrangement compared to the optical element, and to provide the recesses extending from the marking surface into the mold.

Method of forming a marking on an article, and an article having a mark thereon

A process of forming an identification marking within article formed from an at least partially optically transparent material for identification and validation, said process including the steps of (i) forming an indicia with an at least partially optically transparent material by way of subsurface laser engraving (SSLE); and (ii) forming a plurality of defects within or adjacent indicia within said at least partially optically transparent material resultant of the step of forming the indicia and from localized heating and irregularities in said at least partially optically transparent material, wherein said plurality of defects forms said identification marking.

Process of forming an identification marking, and an identification marking formed by way of such a process

A method of forming one or more protrusions on an outer surface of a polished face of a solid state material, said method including the step of applying focused inert gas ion beam local irradiation towards an outer surface of a polished facet of a solid state material in a way of protruding top surface material; wherein irradiated focused inert gas ions from said focused inert gas ion bean penetrate the outer surface of said polished facet of said solid state material; and wherein irradiated focused inert gas ions cause expansive strain within the solid state crystal lattice of the solid state material below said outer surface at a pressure so as to induce expansion of solid state crystal lattice, and form a protrusion on the outer surface of the polished face of said solid state material.

Method of marking material and system therefore, and material marked according to same method

A method of fabricating a component for use in a watch includes a step of depositing a first thin film on a wafer wherein the first thin film is adapted to allow light reflected away from the wafer to be indicative of a first color characteristic. The step of depositing the first thin film is performed by using a plasma-enhanced chemical vapor deposition process or a low pressure chemical vapor deposition process. The method may further include a step of fabricating a second color characteristic, including defining a pattern on the first thin film using photolithography, and, processing a region within a boundary of the pattern so that the region is adapted to allow light reflected away from the wafer to be indicative of the second color characteristic. The step of processing the region within the boundary of the pattern includes depositing a metal or a ceramic material within the boundary of the pattern which is indicative of the second color characteristic. The step of processing the region within the boundary of the pattern may also include depositing a second thin film within the region within the boundary of the pattern.

Method for fabricating a colored component for a watch

An oscillator system () of a mechanical timepiece, comprising: at least one balance wheel () that is free to rotate about an axis; and at least one hairspring () connecting the at least one balance wheel () to a fixed point or to another balance wheel (), the hairspring () including: a first coil () connected to the at least one balance wheel (); and a second coil () connected to the fixed point or to the another balance wheel (); and a transition section () connecting the first coil () to the second coil (), wherein an approximately linear restoring torque for the at least one balance wheel () is primarily provided by elastic deformation of the transition section () and the coils (), in order to generate an oscillatory motion for the at least one balance wheel ().

Growing community of inventors

Hong Kong, China

Ching Tom Kong