Inventor · disambiguated record
Kehan Tian
Also filed as: TIAN KEHAN
56 granted patents·6 pending applications·119 citations·filing 2007–2025
98Inventor score
Top patents by PatentIndex Score
62 records- 0195US11874488B1Diffractive optical waveguide and display apparatus having sameJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Jan 16, 2024·5 cites·20 claims
- 0294US11036126B2Semiconductor fabrication design rule loophole checking for design for manufacturability optimizationIBM·Filed 2019·Granted Jun 15, 2021·4 cites·10 claims
- 0394US9651856B2Source, target and mask optimization by incorporating contour based assessments and integration over process variationsIBM·Filed 2015·Granted May 16, 2017·5 cites·20 claims
- 0494US8372565B2Method for optimizing source and mask to control line width roughness and image log slopeIBM·Filed 2010·Granted Feb 12, 2013·12 cites·41 claims
- 0594US8266556B2Fracturing continuous photolithography masksLIU YING·Filed 2010·Granted Sep 11, 2012·11 cites·19 claims
- 0693US11988861B1Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2024·Granted May 21, 2024·3 cites·19 claims
- 0792US12124069B1Optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2024·Granted Oct 22, 2024·2 cites·26 claims
- 0891US10585346B2Semiconductor fabrication design rule loophole checking for design for manufacturability optimizationIBM·Filed 2017·Granted Mar 10, 2020·3 cites·5 claims
- 0990US11846785B1Diffraction optical waveguide and grating structure thereof, and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Dec 19, 2023·2 cites·12 claims
- 1090US11796747B2Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Oct 24, 2023·2 cites·13 claims
- 1189US11988838B2Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted May 21, 2024·2 cites·13 claims
- 1288US8682634B2Analyzing a patterning process using a model of yieldBAGHERI SAEED·Filed 2012·Granted Mar 25, 2014·5 cites·20 claims
- 1388US8495528B2Method for generating a plurality of optimized wavefronts for a multiple exposure lithographic processBAGHERI SAEED·Filed 2010·Granted Jul 23, 2013·6 cites·20 claims
- 1487US12111474B2Grating structure, diffraction optical waveguide, and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Oct 8, 2024·1 cites·20 claims
- 1587US8954898B2Source-mask optimization for a lithography processIBM·Filed 2013·Granted Feb 10, 2015·5 cites·16 claims
- 1686US11774767B1Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2022·Granted Oct 3, 2023·1 cites·16 claims
- 1785US8351037B2Method to match exposure tools using a programmable illuminatorIBM·Filed 2010·Granted Jan 8, 2013·5 cites·24 claims
- 1884US8028254B2Determining manufacturability of lithographic mask using continuous derivatives characterizing the manufacturability on a continuous scaleIBM·Filed 2008·Granted Sep 27, 2011·7 cites·18 claims
- 1982US9395622B2Synthesizing low mask error enhancement factor lithography solutionsGLOBALFOUNDRIES INC·Filed 2014·Granted Jul 19, 2016·3 cites·17 claims
- 2081US10394116B2Semiconductor fabrication design rule loophole checking for design for manufacturability optimizationIBM·Filed 2017·Granted Aug 27, 2019·2 cites·10 claims
- 2179US9250535B2Source, target and mask optimization by incorporating countour based assessments and integration over process variationsIBM·Filed 2013·Granted Feb 2, 2016·2 cites·20 claims
- 2278US8539390B2Determining manufacturability of lithographic mask based on manufacturing shape penalty of aspect ratio of edge that takes into account pair of connected edges of the edgeINOUE TADANOBU·Filed 2011·Granted Sep 17, 2013·3 cites·20 claims
- 2377US8537444B2System and method for projection lithography with immersed image-aligned diffractive elementGIL DARIO·Filed 2012·Granted Sep 17, 2013·3 cites·5 claims
- 2475US8959462B2Mask design method, program, and mask design systemIBM·Filed 2013·Granted Feb 17, 2015·2 cites·20 claims
- 2574US8880382B2Analyzing a patterning process using a model of yieldBAGHERI SAEED·Filed 2012·Granted Nov 4, 2014·3 cites·18 claims
- 2674US7969554B2Method, computer program, apparatus and system providing printing for an illumination mask for three-dimensional imagesIBM·Filed 2007·Granted Jun 28, 2011·4 cites·20 claims
- 2774US7944545B2High contrast lithographic masksIBM·Filed 2009·Granted May 17, 2011·4 cites·23 claims
- 2872US8453076B2Wavefront engineering of mask data for semiconductor device designINOUE TADANOBU·Filed 2010·Granted May 28, 2013·2 cites·20 claims
- 2971US8234603B2Method for fast estimation of lithographic binding patterns in an integrated circuit layoutBAGHERI SAEED·Filed 2010·Granted Jul 31, 2012·3 cites·25 claims
- 3070US11774238B2Light projection method and light projection deviceHANGZHOU UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2020·Granted Oct 3, 2023·1 cites·19 claims
- 3170US8448098B2Fracturing continuous photolithography masksLIU YING·Filed 2012·Granted May 21, 2013·1 cites·20 claims
- 3268US8059885B2Calculating image intensity of mask by decomposing Manhattan polygon based on parallel edgeTIRAPU-AZPIROZ JAIONE·Filed 2008·Granted Nov 15, 2011·2 cites·25 claims
- 3362US12265217B2Display device and glassesJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2024·Granted Apr 1, 2025·0 cites·24 claims
- 3461US12436385B2Diffractive optical waveguide, design method for diffractive optical waveguide, and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2024·Granted Oct 7, 2025·0 cites·20 claims
- 3561US11966060B1Optical waveguide device for display and display device having the sameJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2024·Granted Apr 23, 2024·0 cites·20 claims
- 3660US8056023B2Determining manufacturability of lithographic mask by reducing target edge pairs used in determining a manufacturing penalty of the lithographic maskIBM·Filed 2008·Granted Nov 8, 2011·1 cites·18 claims
- 3760US8056026B2Determining manufacturability of lithographic mask by selecting target edge pairs used in determining a manufacturing penalty of the lithographic maskIBM·Filed 2008·Granted Nov 8, 2011·1 cites·19 claims
- 3859US12461367B2Near-eye display waveguide device and near-eye display apparatusJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2025·Granted Nov 4, 2025·0 cites·12 claims
- 3959US8266554B2Dynamic provisional decomposition of lithographic patterns having different interaction rangesBAGHERI SAEED·Filed 2011·Granted Sep 11, 2012·1 cites·12 claims
- 4059US2025199321A1Diffractive optical waveguide, design method and formation method thereof, and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2025·Application pending·0 cites
- 4158US12085762B2Optical waveguide device for image display and display device having the sameJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Sep 10, 2024·0 cites·18 claims
- 4258US11841523B2Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Dec 12, 2023·0 cites·17 claims
- 4357US11940653B2Diffractive optical waveguide and display device having the sameJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Mar 26, 2024·0 cites·20 claims
- 4457US11899203B1Method for out-coupling grating for AR optical waveguide, and design method for AR optical waveguideJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2022·Granted Feb 13, 2024·0 cites·20 claims
- 4556US12222533B1Optical waveguide device and display deviceUPHOTON TECH BEIJING CO LTD·Filed 2024·Granted Feb 11, 2025·0 cites·20 claims
- 4656US11892682B2Diffractive optical waveguide and display device having the same preliminary classJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Feb 6, 2024·0 cites·19 claims
- 4756US9564445B2Dummy gate structure for electrical isolation of a fin DRAMIBM·Filed 2014·Granted Feb 7, 2017·0 cites·10 claims
- 4856US2024231104A9Diffraction optical waveguide, design method thereof and near-eye display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Application pending·0 cites
- 4956US2025362517A1Micro-lens array-based laser projection moduleJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Application pending·0 cites
- 5055US11874503B1Diffractive optical waveguide and display deviceJIAXING UPHOTON OPTOELECTRONICS TECH CO LTD·Filed 2023·Granted Jan 16, 2024·0 cites·17 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →