# US 11,441,262 B2 · Forgery-preventing thread/yarn > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,262 B2 - Document ID: US11441262B2 - Status: Granted - Kind: B2 - Application number: 14/927,139 - Filed: 2015-10-29 - Published: 2016-07-07 - Granted: 2022-09-13 - Earliest claimed: 2015-01-05 - Assignees: Nakagawa Sangyo Co., Ltd. - Applicants: Nakagawa Sangyo Co., Ltd. - Inventors: Yoshikatsu Nakagawa; Naoki Ikegami - Web page: https://patentgrep.com/patent/US11441262B2 ## CPC - D06P 1/0012: {Effecting dyeing to obtain luminescent or phosphorescent dyeings} - B42D 25/30: Identification or security features, e.g. for preventing forgery - B42D 25/355: Security threads - D02G 3/06: Threads formed from strip material other than paper - D02G 3/44: Yarns or threads characterised by the purpose for which they are designed {(protective gloves A41D19/00; protective clothing A62B17/00; ropes D07B1/02)} - D06M 23/00: Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process - D06P 3/24: Polyamides; Polyurethanes - D06P 3/52: Polyesters - D06P 3/60: Natural or regenerated cellulose - D06P 5/30: Ink jet printing - D06M 2101/30: Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds - G09F 2003/0276: {Safety features, e.g. colour, prominent part, logo} - G09F 2003/0282: {for textiles, e.g. clothing} - D06P: DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM - B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS ## Abstract According to the present invention, there is provided, at low cost, a thread/yarn for making it possible to easily determine whether a product is a genuine product or a forgery/imitation product, thereby suppressing the manufacture and marketing of forgery/imitation products. This forgery-preventing thread/yarn is formed by making use of a film comprising abase sheet and letters or images printed on the base sheet, the film being slit to have a width of 0.15 mm˜0.75 mm. A thread, yarn or a flat thread representing a genuine product can be cheaply manufactured since it can be obtained by simply slitting a film to a width of 0.15 mm˜0.75 mm. Further, it is possible to easily determine whether a product is a genuine product or a forgery/imitation. ## Claims ### Claim 1 A forgery-preventing yarn comprising a flat forgery-preventing thread formed of a film comprising a base sheet and letters or images printed on the base sheet, the film being slit to have a width of 0.15 mm to 0.75 mm, wherein the flat forgery-preventing thread is twisted to a core thread/yarn, and wherein the letters or images are exposed upon twisting of the flat forgery-preventing thread to the core thread/yarn; wherein all of the letters or images printed on the base sheet are depicted only by a straight line/straight lines which is/are parallel with, perpendicular to, inclined by 45 degrees to the feeding direction of the base sheet on an occasion of printing the letters or images, or by a combination of these lines. ### Claim 2 (depends on 1) The forgery-preventing yarn according to claim 1, wherein the letters or images printed on the base sheet is depicted at a predetermined line width depending on the method of printing. ### Claim 3 (depends on 1) The forgery-preventing yarn according to claim 1, wherein an ink to be used for printing the letters or images is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 4 (depends on 2) The forgery-preventing yarn according to claim 2, wherein an ink to be used for printing the letters or images is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 5 (depends on 1) The forgery-preventing yarn according to claim 1, wherein an ink to be used for printing the letters or images is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 6 A forgery-preventing yarn comprising: a flat forgery-preventing thread formed of a film comprising a base sheet and letters or images printed on the base sheet, the film being slit to have a width of 0.15 mm to 0.75 mm, wherein the flat forgery-preventing thread is twisted to a core thread/yarn, wherein the letters or images are printed in a direction diagonal to a direction of slitting; wherein all of the letters or images printed on the base sheet are depicted only by a straight line/straight lines which is/are parallel with, perpendicular to, inclined by 45 degrees to the feeding direction of the base sheet on an occasion of printing the letters or images, or by a combination of these lines. ### Claim 7 (depends on 6) The forgery-preventing yarn according to claim 6, wherein the letters or images printed on the base sheet is depicted at a predetermined line width depending on the method of printing. ### Claim 8 (depends on 6) The forgery-preventing yarn according to claim 6, wherein a protective layer is deposited on a surface of the base sheet where the letters or images are printed. ### Claim 9 (depends on 6) The forgery-preventing yarn according to claim 6, wherein an ink to be used for printing the letters or images is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 10 (depends on 8) The forgery-preventing yarn according to claim 8, wherein an ink to be used for printing the letters or images, the protective layer or an adhesive layer to be used for adhering the protective layer to the base sheet is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 11 A forgery-preventing yarn comprising a flat forgery-preventing thread formed of a film comprising a base sheet comprising rayon and one or more letters or one or more images printed on the base sheet, the film being slit to have a width of 0.15 mm to 0.75 mm, wherein the flat forgery-preventing thread is twisted to a core thread/yarn; wherein all of the letters or images printed on the base sheet are selected from a group of the letters or images depicted by only a straight line/straight lines which is/are parallel with, perpendicular to, or inclined by 45 degrees to the feeding direction of the base sheet on an occasion of printing the letters or images, or by a combination of these lines only. ### Claim 12 (depends on 11) The forgery-preventing yarn according to claim 11, wherein a protective layer is deposited on a surface of the base sheet where the letters or images are printed. ### Claim 13 (depends on 12) The forgery-preventing yarn according to claim 12, wherein an ink to be used for printing the letters or images is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property. ### Claim 14 (depends on 12) The forgery-preventing yarn according to claim 12, wherein the protective layer or an adhesive layer to be used for adhering the protective layer to the base sheet is enabled to exhibit fluorescent property, phosphorescent property or ultraviolet-reflecting property.