Patents by Inventor Paul Zientek
Paul Zientek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7790361Abstract: Various methods of producing a security document or article including a diffractive optical microstructure are disclosed. One method includes applying an opacifying layer (102) to at least one surface of a transparent substrate (100). An area of the opacifying layer (102) is exposed to laser radiation (108) to ablate apertures (110) in selected portions of the opacifying layer (102), thereby forming a diffractive optical microstructure (112) on the surface of the substrate (100). The laser radiation may be patterned prior to exposing the opacifying layer (102), for example by passing the radiation through a mask (104). Alternatively, a focussed or collimated laser beam (206) may be directed onto the selected portions of the opacifying layer (102). Laser radiation may be directed onto the opacifying layer (102) either directly, or through the transparent substrate (100). Security documents or articles made in accordance with the method are also provided.Type: GrantFiled: July 15, 2005Date of Patent: September 7, 2010Assignee: Securency Pty. Ltd.Inventors: Paul Zientek, Gary Fairless Power, Joshua Robert Nemeth
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Publication number: 20080246894Abstract: A security document or device (30) is provided which has a substrate (31) including at least one layer (35,37) of polymeric material and an optical component formed by at least one orientating (PPN) layer (34) and at least one liquid crystal polymer (LCP) layer (36) in contact with the orientating layer (34). An intermediate prime layer (38) is provided between the optical component and the substrate (31) which improves the adhesion of the optical component to the substrate (31). The prime layer (38) may include a hydroxyl terminated polymer which is cross-linked by a multifunctional isocyanate. A security document with such a prime layer between the optical component and a polymeric surface of the substrate is more robust and able to withstand rough treatment without significantly affecting the optical properties of the optical component.Type: ApplicationFiled: January 11, 2005Publication date: October 9, 2008Applicant: SECURENCY PTY LIMITEDInventors: Gary Power, Paul Zientek
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Publication number: 20070020530Abstract: Various methods of producing a security document or article including a diffractive optical microstructure are disclosed. One method includes applying an opacifying layer (102) to at least one surface of a transparent substrate (100). An area of the opacifying layer (102) is exposed to laser radiation (108) to ablate apertures (110) in selected portions of the opacifying layer (102), thereby forming a diffractive optical microstructure (112) on the surface of the substrate (100). The laser radiation may be patterned prior to exposing the opacifying layer (102), for example by passing the radiation through a mask (104). Alternatively, a focussed or collimated laser beam (206) may be directed onto the selected portions of the opacifying layer (102). Laser radiation may be directed onto the opacifying layer (102) either directly, or through the transparent substrate (100). Security documents or articles made in accordance with the method are also provided.Type: ApplicationFiled: July 15, 2005Publication date: January 25, 2007Inventors: Paul Zientek, Gary Power, Joshua Nemeth
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Patent number: 7040664Abstract: A self-verifying security document, such as a banknote, comprises a flexible sheet formed from a plastics substrate bearing indicia. The sheet has a window of transparent plastics material that includes self-verification means for verifying a security device provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window into register with the security device. The self-verification means may be an optical lens for reading an area of microprinting. In another embodiment, the self-verification means may be an optical filter for viewing an area printed with metameric inks. In other embodiments, the self-verification means and the security device may be polarizing windows or Moire inducing patterns.Type: GrantFiled: July 1, 2004Date of Patent: May 9, 2006Assignee: Securency PTY LTDInventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Patent number: 7029733Abstract: A printed document or other device comprising a polymer substrate having a surface to which printed matter is applied, a reflective or brightly colored layer applied directly to said surface by means of a printing process, and a printed image applied to the reflective or brightly colored layer by an intaglio printing process.Type: GrantFiled: January 29, 1998Date of Patent: April 18, 2006Assignee: Securency Pty LtdInventors: Ronald Gibson Gration, Ana Ghioghiu, Cameron Rex Hibbert, Paul Zientek
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Patent number: 6995383Abstract: Method of verifying the authenticity of a security document (1), the security document including a first at least partially transparent portion (7, 8) and an optical projection element (9) within or superposed with the first at least partially transparent portion (7, 8), the optical projection element (9) acting to transform a light beam (10a) passing from a light beam source through said first at least partially transparent portion (7, 8) into a patterned beam (11) of selected design, the method including the steps of: positioning the security document such that the light beam is transmitted through the first at least partially transparent portion and the patterned beam is projected onto a viewing surface (14), and verifying the presence of a patterned image by the impingement of the patterned beam on the viewing surface (14).Type: GrantFiled: April 28, 2004Date of Patent: February 7, 2006Assignee: Securency Pty LtdInventors: Gerard Joseph Wilson, Paul Zientek
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Patent number: 6923978Abstract: The invention is directed to a composite material, especially a biomedical device, e.g. an ophthalmic device, preferably a contact lens, with one or more wettable surfaces capable of holding a continuous layer of aqueous fluid thereon which composite material comprises a bulk material and a hydrophilic coating characterized in that the hydrophilic coating consists of a carbohydrate attached covalently to reactive groups at the surface of the bulk material, either directly or via functional groups of an oligofunctional compound, said oligofunctional compound in turn having functional groups being capable of reacting with said reactive groups at the surface of the bulk material and with the carbohydrate, wherein said reactive groups are either inherently (a priori) present in the bulk material or wherein said reactive groups have been attached to the surface of the bulk material by a plasma surface preparation, as well as to a process of manufacture of such a composite material.Type: GrantFiled: February 19, 2003Date of Patent: August 2, 2005Assignee: Novartis AGInventors: Ronald Christopher Chatelier, Liming Dai, Hans Jörg Griesser, Sheng Li, Paul Zientek, Dieter Lohmann, Peter Chabrecek
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Publication number: 20040245765Abstract: A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet has a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window (5) into register with the security device (4). The self-verification means may be an optical lens (11) for reading an area of microprinting (10). In another embodiment, the self-verification means may be an optical filter (21) for viewing an area (22) printed with metameric inks. In other embodiments, the self-verification means and the security device (4) may be polarising windows (31, 32) or Moire inducing patterns (41, 42).Type: ApplicationFiled: July 1, 2004Publication date: December 9, 2004Applicant: Securency Party LtdInventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Publication number: 20040206920Abstract: Method of verifying the authenticity of a security document (1), the security document including a first at least partially transparent portion (7, 8) and an optical projection element (9) within or superposed with the first at least partially transparent portion (7, 8), the optical projection element (9) acting to transform a light beam (10a) passing from a light beam source through said first at least partially transparent portion (7, 8) into a patterned beam (11) of selected design, the method including the steps of positioning the security document such that the light beam is transmitted through the first at least partially transparent portion and the patterned beam is projected onto a viewing surface (14), and verifying the presence of a patterned image by the impingement of the patterned beam on the viewing surface (14).Type: ApplicationFiled: April 28, 2004Publication date: October 21, 2004Applicant: Securency Pty Ltd.Inventors: Gerard Joseph Wilson, Paul Zientek
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Patent number: 6770898Abstract: Method of verifying the authenticity of a security document (1), the security document including a first at least partially transparent portion (7, 8) and an optical projection element (9) within or superposed with the first at least partially transparent portion (7, 8), the optical projection element (9) acting to transform a light beam (10a) passing from a light beam source through said first at least partially transparent portion (7, 8) into a patterned beam (11) of selected design, the method including the steps of: positioning the security document such that the light beam is transmitted through the first at least partially transparent portion and the patterned beam is projected onto a viewing surface (14), and verifying the presence of a patterned image by the impingement of the patterned beam on the viewing surface (14).Type: GrantFiled: September 8, 2000Date of Patent: August 3, 2004Assignee: Securency Pty Ltd.Inventors: Gerard Joseph Wilson, Paul Zientek
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Patent number: 6761377Abstract: A self-verifying security document, such as a banknote, comprises a flexible sheet formed from a plastics substrate bearing indicia. The sheet has a window of transparent plastics material which includes self-verification means for verifying a security device provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window into register with the security device. The self-verification means may be an optical lens for reading an area of microprinting. In another embodiment, the self-verification means may be an optical filter for viewing an area printed with metameric inks. In other embodiments, the self-verification means and the security device may be polarizing windows or Moire inducing patterns.Type: GrantFiled: May 6, 2003Date of Patent: July 13, 2004Assignee: Securency Pty LtdInventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Publication number: 20030193184Abstract: A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet has a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to brings the window (5) into register with the security device (4). The self-verification means may be an optical lens (11) for reading an area of microprinting (10). In another embodiment, the self-verification means may be an optical filter (21) for viewing an area (22) printed with metameric inks. In other embodiments, the self-verification means and the security device (4) may be polarising windows (31, 32) or Moire inducing patterns (41, 42).Type: ApplicationFiled: May 6, 2003Publication date: October 16, 2003Applicant: Securency Pty Ltd.Inventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Publication number: 20030193183Abstract: A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet has a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window (5) into register with the security device (4). The self-verification means may be an optical lens (11) for reading an area of microprinting (10). In another embodiment, the self-verification means may be an optical filter (21) for viewing an area (22) printed with metameric inks. In other embodiments, the self-verification means and the security device (4) may be polarising windows (31, 32) or Moire inducing patterns (41, 42).Type: ApplicationFiled: May 6, 2003Publication date: October 16, 2003Applicant: Securency Pty LtdInventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Patent number: 6623747Abstract: The invention is directed to a composite material, especially a biomedical device, e.g. an ophthalmic device, preferably a contact lens, with one or more wettable surfaces capable of holding a continous layer of aqueous fluid thereon which composite material comprises a bulk material and a hydrophilic coating characterized in that the hydrophilic coating consists of a carbohydrate attached covalently to reactive groups at the surface of the bulk material, either directly or via functional groups of an oligofunctional compound, said oligofunctional compound in turn having functional groups being capable of reacting with said reactive groups at the surface of the bulk material and with the carbohydrate, wherein said reactive groups are either inherently (a priori) present in the bulk material or wherein said reactive groups have been attached to the surface of the bulk material by a plasma surface preparation, as well as to a process of manufacture of such a composite material.Type: GrantFiled: February 14, 1996Date of Patent: September 23, 2003Assignee: Novartis AGInventors: Ronald Christopher Chatelier, Liming Dai, Hans Jörg Griesser, Sheng Li, Paul Zientek, Dieter Lohmann, Peter Chabrecek
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Publication number: 20030175325Abstract: The invention is directed to a composite material, especially a biomedical device, e.g. an ophthalmic device, preferably a contact lens, with one or more wettable surfaces capable of holding a continous layer of aqueous fluid thereon which composite material comprises a bulk material and a hydrophilic coating characterized in that the hydrophilic coating consists of a carbohydrate attached covalently to reactive groups at the surface of the bulk material, either directly or via functional groups of an oligofunctional compound, said oligofunctional compound in turn having functional groups being capable of reacting with said reactive groups at the surface of the bulk material and with the carbohydrate, wherein said reactive groups are either inherently (a priori) present in the bulk material or wherein said reactive groups have been attached to the surface of the bulk material by a plasma surface preparation, as well as to a process of manufacture of such a composite material.Type: ApplicationFiled: February 19, 2003Publication date: September 18, 2003Inventors: Ronald Christopher Chatelier, Liming Dai, Hans Jorg Griesser, Sheng Li, Paul Zientek, Dieter Lohmann, Peter Chabrecek
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Patent number: 6505779Abstract: Security document (1) with security indicia (21) for preventing unauthorised reproduction, the security indicia being detectable in transmitted light, wherein the security indicia are located within the bounds of a security pattern (20) acting to visually conceal the security pattern in reflected light. The security pattern may be formed of one or more elements (25) and may have a complexity selected to enable the concealment of the security indicia (21).Type: GrantFiled: April 9, 2001Date of Patent: January 14, 2003Assignee: Securency Pty LtdInventors: Gary Power, Paul Zientek
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Publication number: 20030003275Abstract: A printed document or other device comprising a polymer substrate having a surface to which printed matter is applied, a reflective or brightly coloured layer of ink applied directly to said surface by means of a printing process, and a printed image applied to the reflective or brightly coloured layer by an intaglio printing process.Type: ApplicationFiled: August 30, 1999Publication date: January 2, 2003Inventors: RONALD GIBSON GRATION, ANA GHIOGHIU, CAMERON REX HIBBERT, PAUL ZIENTEK
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Publication number: 20020185857Abstract: A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet has a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally spaced second portion of the sheet when the sheet is bent or folded to bring the window (5) into register with the security device (4). The self-verification means may be an optical lens (11) for reading an area of microprinting (10). In another embodiment, the self-verification means may be an optical filter (21) for viewing an area (22) printed with metameric inks. In other embodiments, the self-verification means and the security device (4) may be polarizing windows (31, 32) or Moire inducing patterns (41, 42).Type: ApplicationFiled: July 24, 2002Publication date: December 12, 2002Applicant: Securency Pty LtdInventors: John Charles Taylor, Bruce Alfred Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Patent number: 6471247Abstract: A security document (1), such as a bank note, is formed from a sheet-like substrate (10) of clear plastic material with layers (13, 14, 15, 16) of opacifying ink applied to the surfaces (11, 12) of the substrate (10). The security document (1) includes a security device (20) which is at least partially obscured by the layers (13, 14) of opacifying ink on a flat surface (11) of the substrate (10). The layers (15, 16) on the second surface (12) of the substrate (10) are applied in such a manner so as to leave a “half-window” area uncovered by opacifying ink through which the security device (20) is visible for one side of the document (1). The security device (20) may extend transversely outside the half-window area and be visible in transmission, enabling a different contrasting effect to be observed from both sides of the document.Type: GrantFiled: August 19, 1999Date of Patent: October 29, 2002Assignee: Securency Pty LtdInventors: Bruce Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert
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Patent number: 6471248Abstract: A security document (1), such as a bank note, is formed from a sheet-like substrate (10) of clear plastic material with layers (13, 14, 15, 16) of opacifying ink applied to the surfaces (11, 12) of the substrate (10). The security document (1) includes a security device (20) which is at least partially obscured by the layers (13, 14) of opacifying ink on a flat surface (11) of the substrate (10). The layers (15, 16) on the second surface (12) of the substrate (10) are applied in such a manner so as to leave a “half-window” area uncovered by opacifying ink through which the security device (20) is visible for one side of the document (1). The security device (20) may extend transversely outside the half-window area and be visible in transmission, enabling a different contrasting effect to be observed from both sides of the document.Type: GrantFiled: October 12, 2001Date of Patent: October 29, 2002Assignee: Securency Pty Ltd.Inventors: Bruce Hardwick, Wayne Kevin Jackson, Paul Zientek, Cameron Rex Hibbert