Patents by Inventor Ifor David William Samuel
Ifor David William Samuel 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: 11509118Abstract: A security or identification device comprises a membrane laser structure configured to be optically pumped. The membrane laser structure comprises a flexible emission layer comprising a gain material; and one or more structures formed in or associated with the flexible emission layer and configured to provide optical feedback in the emission layer to produce a laser light output having at least one property representing an identifier.Type: GrantFiled: July 4, 2018Date of Patent: November 22, 2022Assignee: University Court of the University of St AndrewsInventors: Markus Karl, Malte C. Gather, Ifor David William Samuel, Graham A. Turnbull
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Publication number: 20210143613Abstract: A security or identification device comprises a membrane laser structure configured to be optically pumped. The membrane laser structure comprises a flexible emission layer comprising a gain material; and one or more structures formed in or associated with the flexible emission layer and configured to provide optical feedback in the emission layer to produce a laser light output having at least one property representing an identifier.Type: ApplicationFiled: July 4, 2018Publication date: May 13, 2021Applicant: University Court of the University of St AndrewsInventors: Markus Karl, Malte C. Gather, Ifor David William Samuel, Graham A. Turnbull
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Publication number: 20200177278Abstract: A receiver assembly (100) and data communications method are disclosed. In one arrangement, a receiver assembly (100) comprises a concentration stage (14). The concentration stage (14) receives radiation via an input surface (120) and outputs concentrated radiation via an output surface (122). The concentration stage comprises a wavelength converting member (6) that converts radiation to longer wavelength radiation. An optical element (102) is provided which is such that if a plane wave of radiation is incident on the optical element a spatial distribution of radiation derived from the plane wave on the input surface of the concentration stage varies as a function of a direction of incidence of the plane wave relative to the optical element. A plurality of detectors (42) are provided, each detecting radiation output from a different portion of the output surface of the concentration stage.Type: ApplicationFiled: July 17, 2017Publication date: June 4, 2020Inventors: Dominic Christopher O'Brien, Stephen Collins, Ifor David William Samuel, Pavios Manousiadis, Graham Alexandria Tumbill, Harald Haas
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Patent number: 10128447Abstract: A light-emitting device includes an organometallic complex of the form Z-M-Z1, as light emitting material. M is Pd(0) or Pt(0) and Z is a nitrogen containing heterocyclic carbene ligand. Z1 is a phosphorus ligand or a nitrogen containing heterocyclic carbene ligand that may be the same as or different from Z. The light emitting device may be an organic light-emitting diode (OLED), a sensor, or a light-emitting electrochemical cell (LEEC).Type: GrantFiled: December 1, 2015Date of Patent: November 13, 2018Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWSInventors: Catherine Cazin, Ifor David William Samuel, Eli Zysman-Colman
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Publication number: 20180212160Abstract: A light-emitting device includes an organometallic complex of the form Z-M-Z1, as light emitting material. M is Pd(0) or Pt(0) and Z is a nitrogen containing heterocyclic carbene ligand. Z1 is a phosphorus ligand or a nitrogen containing heterocyclic carbene ligand that may be the same as or different from Z. The light emitting device may be an organic light-emitting diode (OLED), a sensor, or a light-emitting electrochemical cell (LEEC).Type: ApplicationFiled: December 1, 2015Publication date: July 26, 2018Inventors: Catherine Cazin, Ifor David William Samuel, Eli Zysman-Colman
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Patent number: 9078330Abstract: A dendrimer of formula (I): [DENDRON1]x-CORE-[B-[X]b]a (I) wherein: CORE is a metal ion or a group containing a metal ion, or is a non-polymeric organic group; B is a phenyl ring; a is an integer of from 1 to 8; b is an integer of from 3 to 5; x is zero or an integer of from 1 to 7; each X is an aryl or heteroaryl ring, or is an at least partially conjugated dendritic molecular structure; each DENDRON1 is an at least partially conjugated dendritic molecular structure; and wherein the dendrimer further comprises one or more surface groups; with the proviso that where CORE is a non-metallic core, then X is an at least partially conjugated dendritic molecular structure comprising at least one linking group.Type: GrantFiled: March 15, 2006Date of Patent: July 7, 2015Assignees: ISIS INNOVATION LIMITED, THE UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWSInventors: Paul Leslie Burn, Ifor David William Samuel, Neil Cumpstey
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Patent number: 9067061Abstract: An ambulatory device for use in a therapeutic and/or cosmetic treatment, the device comprises an organic light-emitting semiconductor which, in use, covers an area to be treated and emits electromagnetic radiation to cause said therapeutic and/or cosmetic treatment of the area. The light source may be extensive to provide uniform irradiation of the area to be treated and may be pulsed. The device may also include a photopharmaceutical.Type: GrantFiled: October 8, 2010Date of Patent: June 30, 2015Assignees: The University Court of the University of St. Andrews, Tayside Health BoardInventors: Ifor David William Samuel, James Ferguson
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Patent number: 8536333Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXxYz, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.Type: GrantFiled: August 11, 2010Date of Patent: September 17, 2013Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Ifor David William Samuel, Paul Leslie Burn, Shih-Chun Lo
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Patent number: 8377714Abstract: Novel conjugates of nanoparticles are provided and have particular utility in the detection of latent fingerprints by their ability to bind to a fingerprint residue. The conjugate comprises a nanoparticle attached to a linker group having a terminal reactive moiety, wherein said nanoparticle comprises a core of a first semiconductor material having a first luminescence and a shell of a second material which at least partially surrounds the core. The conjugated nanoparticle can bind to the fingerprint residue and can be detected using fluorescence.Type: GrantFiled: June 18, 2009Date of Patent: February 19, 2013Assignee: The University Court of the University of St AndrewsInventors: David John Cole-Hamilton, Ifor David William Sámuel, Jennifer Rachel Amey, John William Bond
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Patent number: 8319213Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridised ring atoms of said aryl or heteroaryl groups.Type: GrantFiled: June 13, 2011Date of Patent: November 27, 2012Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
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Patent number: 8314549Abstract: This invention relates to a hat emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.Type: GrantFiled: March 11, 2011Date of Patent: November 20, 2012Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Shih-Chun Lo, John Lupton, Victor Christou, Jonathan N. G. Pillow, Ifor David William Samuel
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Patent number: 8216699Abstract: The invention provides a cyclometallated complex comprising the structure of formula I wherein: M is a d-block transition metal; B is a five- or six-membered aryl or heteroaryl ring which is optionally substituted and optionally fused to one or more other aryl or heteroaryl rings; A is a five- or six-membered heteroaryl ring comprising at least three nitrogen atoms; R1 is a group other than hydrogen; n is zero or an integer equal to or greater than one; and A and B are optionally fused or linked by one or more covalent bonds. The invention also provides the use of such complexes in optoelectronic devices, and in particular in organic light emitting devices.Type: GrantFiled: December 23, 2009Date of Patent: July 10, 2012Assignee: Isis Innovation LimitedInventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
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Publication number: 20110279679Abstract: The invention provides an imaging apparatus (10) for obtaining an image (40) of a fluorescent pattern (32) under ambient light, such as a fluorescent barcode or a fingerprint dyed with a fluorescent marker. The apparatus includes a synchronous shutter imaging device (12) having an image recording sensor and a shutter, a first pulsed light source (18) which emits a pulse of light having an excitation wavelength of the fluorescent pattern, an optical filter (14) which prevents light having the excitation wavelength from reaching the image recording sensor of the synchronous shutter imaging device, and a synchronisation control (22) which synchronises the shutter and the pulsed light source. The synchronisation of the shutter and pulse, so that the shutter opens during the pulse, and the provision of the optical filter allow a low intensity light source to be used and an image to be obtained under ambient light conditions.Type: ApplicationFiled: December 1, 2009Publication date: November 17, 2011Inventors: Ifor David William Samuel, Mario Giardini
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Patent number: 8025988Abstract: A process for modifying at least one dendron that is intended to form part of a dendrimer is disclosed. One reacts at least one reactable unsaturated group in a chemoselective manner to form a less unsaturated group. Also disclosed is a process for modifying dendrimers in a similar manner.Type: GrantFiled: February 18, 2010Date of Patent: September 27, 2011Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel, Michael John Frampton
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Patent number: 7977861Abstract: A composition is described comprising a mixture of at least two different dendrimers A and B which possess the same core and the same repeating unit or units in the dendrons. Either the generation of at least one of said dendrons in one of said dendrimers (A) is different from the generation of at least one of the dendrons in the other of said dendrimers (B), or the number of dendrons in one of said dendrimers, or both, is different from the number of dendrons in the other of said dendrimers, or both.Type: GrantFiled: August 28, 2003Date of Patent: July 12, 2011Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel
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Patent number: 7960725Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridized ring atoms of said aryl or heteroaryl groups.Type: GrantFiled: November 25, 2009Date of Patent: June 14, 2011Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
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Patent number: 7960557Abstract: Asymmetric light-emitting dendrimers having the formulae: (a) CORE-[DENDRITE1]n[DENDRITE2]m and (b) CORE-[DENDRITE]n are disclosed.Type: GrantFiled: May 26, 2009Date of Patent: June 14, 2011Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel, Shih-Chun Lo
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Publication number: 20110127496Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXXYZ, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.Type: ApplicationFiled: August 11, 2010Publication date: June 2, 2011Inventors: Ifor David William Samuel, Paul Leslie Burn, Shih-Chun Lo
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Publication number: 20110104815Abstract: Novel conjugates of nanoparticles are provided and have particular utility in the detection of latent fingerprints by their ability to bind to a fingerprint residue. The conjugate comprises a nanoparticle attached to a linker group having a terminal reactive moiety, wherein said nanoparticle comprises a core of a first semiconductor material having a first luminescence and a shell of a second material which at least partially surrounds the core. The conjugated nanoparticle can bind to the fingerprint residue and can be detected using fluorescence.Type: ApplicationFiled: June 18, 2009Publication date: May 5, 2011Inventors: David John Cole-Hamilton, Ifor David William Samuel, Jenifer Rachel Amey, John William Bond
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Patent number: 7906902Abstract: This invention relates to a light emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.Type: GrantFiled: September 22, 2009Date of Patent: March 15, 2011Assignees: ISIS Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Shih-Chun Lo, John Lupton, Victor Christou, Jonathan N. G. Pillow, Ifor David William Samuel