Patents by Inventor Michael Cass
Michael Cass 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).
-
Publication number: 20230416601Abstract: A chiral polymer comprising a repeat unit having a first planar group disposed in a first plane; a second planar group disposed in a second plane different from the first plane; a bond or group linking the first planar group and the second planar group; and a first divalent binding group linking the first planar group and the second planar group. The polymer may be used as the active material of an electrooptic modulator.Type: ApplicationFiled: October 29, 2021Publication date: December 28, 2023Inventors: Matthew Roberts, Przemek Gawel, Philip Benze, Jon Pillow, Michael Cass, Simon King, Martin Humphries, Thomas Fletcher
-
Patent number: 11788001Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.Type: GrantFiled: November 24, 2020Date of Patent: October 17, 2023Assignee: Sumitomo Chemical Company LimitedInventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
-
Publication number: 20210079296Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.Type: ApplicationFiled: November 24, 2020Publication date: March 18, 2021Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
-
Patent number: 10870796Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.Type: GrantFiled: February 18, 2016Date of Patent: December 22, 2020Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
-
Publication number: 20200055885Abstract: A metal complex of formula (I): M(L1)x(L2)y (I) wherein: M is a second or third row transition metal; L1 in each occurrence is independently a light-emitting ligand; L2 is an auxiliary ligand; x is at least 1; y is at least 1; each L1 is a group of formula (IIa) or (IIb): wherein R1-R10 are each independently H or a substituent with the proviso at least one of R3, R5 and R9 of at least one L1 is a group of formula —(Ar)p wherein Ar in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and p is at least 2.Type: ApplicationFiled: June 24, 2016Publication date: February 20, 2020Applicants: Cambridge Display Techology Limited, Sumitomo Chemical Company LimitedInventors: William Tarran, Kiran Kamtekar, Ruth Pegington, Michael Cass, Matthew Roberts
-
Publication number: 20190221757Abstract: A metal complex of formula (I): M(L1)x(L2)y??(I) wherein: M is a second or third row transition metal; L1 in each occurrence is independently a light-emitting ligand; L2 is an auxiliary ligand; x is at least 1; y is at least 1; each L1 is a group of formula (IIa) or (IIb): wherein R1-R10 are each independently H or a substituent with the proviso at least one of R3, R5 and R9 of at least one L1 is a group of formula —(Ar)p wherein Ar in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and p is at least 2.Type: ApplicationFiled: February 13, 2019Publication date: July 18, 2019Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: William Tarran, Kiran Kamtekar, Ruth Pegington, Michael Cass, Matthew Roberts
-
Patent number: 10347840Abstract: A polymer comprising a fluorescent light-emitting repeating unit comprising a group of formula ED-EA wherein ED is an electron-donating unit; EA is an electron-accepting unit; and a band gap EgCT of a charge-transfer state formed from the electron-donating unit and the electron-accepting unit is smaller than the bandgap of either the electron-accepting unit EgEA or that of the electron-donating unit EgED.Type: GrantFiled: February 17, 2016Date of Patent: July 9, 2019Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Michael Cass, Matthew Roberts, Florence Bourcet, Andrey Nikolaenko
-
Publication number: 20180138414Abstract: An organic light-emitting device comprising an anode (101), a cathode (105) and an homogeneous organic light-emitting layer (103) between the anode and the cathode wherein: the light-emitting layer comprises a first light-emitting material mixed with an inert material; the inert material has a HOMO level (HOMOIM) that is further from vacuum than a HOMO level (HOMOLEM) of the first light-emitting material and a LUMO level (LUMOIM) that is closer to vacuum than a LUMO level(LUMOLEM) of the first light-emitting material; and the inert material comprises up to 25 weight % of the light-emitting layer.Type: ApplicationFiled: May 13, 2016Publication date: May 17, 2018Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Michael Cass, Matthew Roberts, Natasha M.J. Conway
-
Publication number: 20180037812Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.Type: ApplicationFiled: February 18, 2016Publication date: February 8, 2018Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
-
Patent number: 9812647Abstract: Composition which may be useful in an organic light emitting diode, the composition having a fluorescent light-emitting polymer with light-emitting repeat units, and a triplet-accepting unit mixed with the light-emitting polymer.Type: GrantFiled: June 24, 2011Date of Patent: November 7, 2017Assignees: Cambridge Display Technology, Ltd., Sumitomo Chemical Company LimitedInventors: Jonathan Pillow, Matthew Roberts, Martina Pintani, Simon King, Michael Cass
-
Patent number: 9773981Abstract: Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2×T1A>S1A>S1E, or T1A+T1E>S1A>S1E in which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; S1A represents a singlet excited state energy level of the triplet-accepting material; and S1E represents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.Type: GrantFiled: June 24, 2011Date of Patent: September 26, 2017Assignees: Cambridge Display Technology, Ltd., Sumitomo Chemical Company LimitedInventors: Simon King, Martina Pintani, Matthew Roberts, Michael Cass
-
Patent number: 9676900Abstract: A polymer comprising a repeat unit of formula (I): (I) wherein Ar6 and Ar7 each independently represent a substituted or unsubstituted aryl or heteroaryl group; Sp represents a spacer group comprising a chain of at least 2 aliphatic carbon atoms spacing Ar6 from Ar7; m is at least 1; and if m is greater than 1 then —(Ar7)m forms a linear or branched chain of Ar7 groups in which Ar7 in each occurrence may be the same or different.Type: GrantFiled: January 31, 2012Date of Patent: June 13, 2017Assignees: Cambridge Display Technology, Ltd., Sumitomo Chemical Company LimitedInventors: Sophie Barbara Heidenhain, Matthew Roberts, Michael Cass, Natasha M. J. Conway, Fredrik Jakobsson
-
Publication number: 20160240785Abstract: A polymer comprising a fluorescent light-emitting repeating unit comprising a group of formula ED-EA wherein ED is an electron-donating unit; EA is an electron-accepting unit; and a band gap EgCT of a charge-transfer state formed from the electron-donating unit and the electron-accepting unit is smaller than the bandgap of either the electron-accepting unit EgEA or that of the electron-donating unit EgED.Type: ApplicationFiled: February 17, 2016Publication date: August 18, 2016Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Michael Cass, Matthew Roberts, Florence Bourcet, Andrey Nikolaenko
-
Patent number: 9373554Abstract: A method of monitoring an OLED production process for making an OLED device is disclosed. According to the method, at least one reference OLED device similar to said OLED device is fabricated. Said at least one reference OLED device has a layered structure corresponding to said OLED device and a range of hole injection and/or transport layer thicknesses. A spectral variation of a light output of said at least one reference OLED device with respect to variation in said hole injection and/or transport layer thickness is characterized. A said OLED device is partially fabricated by depositing one or more layers comprising at least said hole injection and/or transport layer and a thickness of said one or more layers is measured such that a light output for said partially fabricated OLED device can be predicted, in a target color space, from said measuring, using said characterized spectral variation.Type: GrantFiled: June 25, 2014Date of Patent: June 21, 2016Assignee: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Graham Anderson, Michael Cass, Daniel Forsythe
-
Publication number: 20150031147Abstract: A method of monitoring an OLED production process for making a production process OLED device, the production process OLED device having a layered structure comprising an anode layer and a cathode layer, said anode and cathode layers sandwiching a hole injection layer, a hole transport layer and at least one organic light emitting layer, the method comprising: fabricating at least one similar OLED device to said production process OLED device, wherein said at least one similar OLED device has a layered structure corresponding to said production process OLED device and a range of hole injection and/or transport layer thicknesses; characterising a spectral variation of a light output of said at least one similar OLED device with respect to variation in said hole injection and/or transport layer thickness; partially fabricating a said production process OLED device using said production process, wherein said partial fabrication comprises depositing one or more layers comprising at least said hole injection and/oType: ApplicationFiled: June 25, 2014Publication date: January 29, 2015Applicant: CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Graham Anderson, Michael Cass, Daniel Forsythe
-
Publication number: 20130187147Abstract: Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2×T1A>S1A>S1E, or T1A+T1E>S1A>S1E in which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; S1A represents a singlet excited state energy level of the triplet-accepting material; and S1E represents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.Type: ApplicationFiled: June 24, 2011Publication date: July 25, 2013Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology LimitedInventors: Simon King, Martina Pintani, Matthew Roberts, Michael Cass
-
Publication number: 20130187146Abstract: Composition which may be useful in an organic light emitting diode, the composition having a fluorescent light-emitting polymer with light-emitting repeat units, and a triplet-accepting unit bound to the light-emitting polymer.Type: ApplicationFiled: June 24, 2011Publication date: July 25, 2013Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Jonathan Pillow, Matthew Roberts, Martina Pintani, Simon King, MIchael Cass
-
Publication number: 20110142691Abstract: A stability valve assembly includes a centrifugal pump and a valve downstream of the centrifugal pump. The valve includes a valve member that is movable along a valve axis within a valve body to control a fluid flow from the centrifugal pump. The valve member has a first orifice connecting a valve input to a valve chamber, and has at least one second orifice connecting a valve outlet to the valve chamber. A reference pressure upstream of the centrifugal pump applies pressure to a stepped portion of the valve member such that an amount of negative feedback provided by the valve assembly is proportional to a rotational speed of the centrifugal pump.Type: ApplicationFiled: December 11, 2009Publication date: June 16, 2011Inventors: Joshua Adams, Michael Cass
-
Publication number: 20100026018Abstract: A lock knob for covering an end of a lock rod protruding through a door of a motor vehicle is disclosed herein. The lock knob includes a first knob portion. The lock knob also includes a second knob portion. The lock knob also includes a multi-stage locking structure operable to engage the first knob portion and the second knob portion together in a first configuration. When the first and second knob portions are in the first configuration, the end of the lock rod can be slidably received between the first knob portion and the second knob portion. The multi-stage locking structure is also operable to engage the first knob portion and the second knob portion together in a second configuration. When the first and second knob portions are in the second configuration, the lock rod is fixed relative to the first knob portion and to the second knob portion.Type: ApplicationFiled: July 31, 2008Publication date: February 4, 2010Inventors: Charles Daniel Bailey, Michael Cass, Jeffrey Allen Borchers, Don Stacherski, Thomas Franz Josef Gehring
-
Publication number: 20080012376Abstract: A center stack for an instrument panel of a motor vehicle. The center stack includes a front plate having an exposed surface with a first surface finish and a back plate having a visible portion uncovered by the front plate. The front plate has at least one opening extending through the exposed surface for accessing at least one operational feature of the motor vehicle. The visible portion of the back plate has a second surface finish that differs from the first surface finish of the front plate. The back plate may include a flex joint that permits the visible portion of the back plate to move relative to an adjacent non-visible portion covered by the front plate.Type: ApplicationFiled: July 25, 2007Publication date: January 17, 2008Applicant: International Automotive Components Group North America, Inc.Inventors: Timothy Gresham, Michael Cass, Gail Miciuda