Search

Leonard Chang

Supervisory Patent Examiner (ID: 254, Phone: (571)270-3691 , Office: P/4166 )

Most Active Art Unit
2812
Art Unit(s)
2898, 4121, 2812, 4100
Total Applications
320
Issued Applications
197
Pending Applications
1
Abandoned Applications
127

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19576701 [patent_doc_number] => 20240380993 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-14 [patent_title] => MONITORING AN EVENT QUEUE IN AN EVENT-BASED VISION SENSOR TO ACCOUNT FOR EVENT BURSTS [patent_app_type] => utility [patent_app_number] => 18/660930 [patent_app_country] => US [patent_app_date] => 2024-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3245 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18660930 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/660930
Monitoring an event queue in an event-based vision sensor to account for event bursts May 9, 2024 Issued
Array ( [id] => 20496162 [patent_doc_number] => 12538050 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-27 [patent_title] => Photoelectric conversion apparatus [patent_app_type] => utility [patent_app_number] => 18/646985 [patent_app_country] => US [patent_app_date] => 2024-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 2437 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18646985 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/646985
Photoelectric conversion apparatus Apr 25, 2024 Issued
Array ( [id] => 19394150 [patent_doc_number] => 20240284020 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => CAMERA-BASED, PRIVACY LED TAMPER DETECTION [patent_app_type] => utility [patent_app_number] => 18/639556 [patent_app_country] => US [patent_app_date] => 2024-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5042 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18639556 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/639556
Camera-based, privacy LED tamper detection Apr 17, 2024 Issued
Array ( [id] => 20340406 [patent_doc_number] => 20250344526 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-06 [patent_title] => Polydimethylsiloxane Antireflective Layer for an Image Sensor [patent_app_type] => utility [patent_app_number] => 18/635446 [patent_app_country] => US [patent_app_date] => 2024-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6664 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18635446 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/635446
Polydimethylsiloxane Antireflective Layer for an Image Sensor Apr 14, 2024 Pending
Array ( [id] => 19988154 [patent_doc_number] => 20250126376 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => IMAGE SENSING DEVICE [patent_app_type] => utility [patent_app_number] => 18/624128 [patent_app_country] => US [patent_app_date] => 2024-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3325 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18624128 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/624128
Image sensing device Apr 1, 2024 Issued
Array ( [id] => 19469900 [patent_doc_number] => 20240323570 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => RAMP SIGNAL GENERATOR, IMAGE SENSOR INCLUDING THE SAME, AND OPERATING METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/610971 [patent_app_country] => US [patent_app_date] => 2024-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13914 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18610971 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/610971
RAMP SIGNAL GENERATOR, IMAGE SENSOR INCLUDING THE SAME, AND OPERATING METHOD THEREOF Mar 19, 2024 Pending
Array ( [id] => 19270983 [patent_doc_number] => 20240214689 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-27 [patent_title] => IMAGE-CAPTURING DEVICE AND IMAGE PROCESSING DEVICE [patent_app_type] => utility [patent_app_number] => 18/601492 [patent_app_country] => US [patent_app_date] => 2024-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 42503 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18601492 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/601492
IMAGE-CAPTURING DEVICE AND IMAGE PROCESSING DEVICE Mar 10, 2024 Abandoned
Array ( [id] => 19334700 [patent_doc_number] => 20240249130 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => Artificial Neural Network Computation using Integrated Circuit Devices having Analog Inference Capability [patent_app_type] => utility [patent_app_number] => 18/601627 [patent_app_country] => US [patent_app_date] => 2024-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17321 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18601627 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/601627
Artificial Neural Network Computation using Integrated Circuit Devices having Analog Inference Capability Mar 10, 2024 Pending
Array ( [id] => 19714026 [patent_doc_number] => 20250024168 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-16 [patent_title] => IMAGE SENSOR [patent_app_type] => utility [patent_app_number] => 18/443417 [patent_app_country] => US [patent_app_date] => 2024-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14016 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18443417 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/443417
IMAGE SENSOR Feb 15, 2024 Pending
Array ( [id] => 19394206 [patent_doc_number] => 20240284076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => PHOTOELECTRIC CONVERSION DEVICE, PHOTOELECTRIC CONVERSION SYSTEM, MOVABLE OBJECT AND EQUIPMENT [patent_app_type] => utility [patent_app_number] => 18/435758 [patent_app_country] => US [patent_app_date] => 2024-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23843 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18435758 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/435758
PHOTOELECTRIC CONVERSION DEVICE, PHOTOELECTRIC CONVERSION SYSTEM, MOVABLE OBJECT AND EQUIPMENT Feb 6, 2024 Pending
Array ( [id] => 19365608 [patent_doc_number] => 20240267642 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => GLOBAL AND CLUSTER CONTRAST DETECTION IN VISION NEUROMORPHIC SENSORS [patent_app_type] => utility [patent_app_number] => 18/432769 [patent_app_country] => US [patent_app_date] => 2024-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20079 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18432769 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/432769
Global and cluster contrast detection in vision neuromorphic sensors Feb 4, 2024 Issued
Array ( [id] => 20104169 [patent_doc_number] => 20250234105 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-17 [patent_title] => CORRECTION METHOD AND DEVICE FOR HANDLING COLUMN FIXED PATTERN NOISE OF IMAGE SENSOR AND RELATED IMAGE SENSING DEVICE [patent_app_type] => utility [patent_app_number] => 18/412618 [patent_app_country] => US [patent_app_date] => 2024-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18412618 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/412618
Correction method and device for handling column fixed pattern noise of image sensor and related image sensing device Jan 14, 2024 Issued
Array ( [id] => 20097452 [patent_doc_number] => 20250227388 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => Imaging System with Rolling Shutter Readout and an Electronic Shutter [patent_app_type] => utility [patent_app_number] => 18/406959 [patent_app_country] => US [patent_app_date] => 2024-01-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2218 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18406959 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/406959
Imaging System with Rolling Shutter Readout and an Electronic Shutter Jan 7, 2024 Abandoned
Array ( [id] => 20090388 [patent_doc_number] => 20250220324 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => Image Sensor with Asynchronous Sampling for Improved Frame Rate [patent_app_type] => utility [patent_app_number] => 18/400226 [patent_app_country] => US [patent_app_date] => 2023-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1244 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18400226 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/400226
Image Sensor with Asynchronous Sampling for Improved Frame Rate Dec 28, 2023 Pending
Array ( [id] => 20073654 [patent_doc_number] => 20250211876 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-26 [patent_title] => HIGH-SPEED IMAGER CIRCUIT [patent_app_type] => utility [patent_app_number] => 18/396456 [patent_app_country] => US [patent_app_date] => 2023-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2321 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18396456 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/396456
HIGH-SPEED IMAGER CIRCUIT Dec 25, 2023 Issued
Array ( [id] => 20112706 [patent_doc_number] => 12363455 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-15 [patent_title] => Image sensor operating in a photovoltaic mode [patent_app_type] => utility [patent_app_number] => 18/393069 [patent_app_country] => US [patent_app_date] => 2023-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 15 [patent_no_of_words] => 0 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18393069 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/393069
Image sensor operating in a photovoltaic mode Dec 20, 2023 Issued
Array ( [id] => 20483614 [patent_doc_number] => 12532092 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-20 [patent_title] => Pixel array for optimizing dual conversion gain operation of pixels sharing floating diffusion region and image sensor including the same [patent_app_type] => utility [patent_app_number] => 18/540209 [patent_app_country] => US [patent_app_date] => 2023-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 4444 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18540209 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/540209
Pixel array for optimizing dual conversion gain operation of pixels sharing floating diffusion region and image sensor including the same Dec 13, 2023 Issued
Array ( [id] => 20456985 [patent_doc_number] => 12520054 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-06 [patent_title] => Image sensor, image processing system including the same, and operation method thereof [patent_app_type] => utility [patent_app_number] => 18/535525 [patent_app_country] => US [patent_app_date] => 2023-12-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 9086 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18535525 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/535525
Image sensor, image processing system including the same, and operation method thereof Dec 10, 2023 Issued
Array ( [id] => 19254559 [patent_doc_number] => 20240205556 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => IMAGE SENSOR HAVING HIGH DYNAMIC RANGE [patent_app_type] => utility [patent_app_number] => 18/534208 [patent_app_country] => US [patent_app_date] => 2023-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15017 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 287 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18534208 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/534208
Image sensor having high dynamic range Dec 7, 2023 Issued
Array ( [id] => 19958094 [patent_doc_number] => 12328524 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-10 [patent_title] => Imaging device and image processing method [patent_app_type] => utility [patent_app_number] => 18/527950 [patent_app_country] => US [patent_app_date] => 2023-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 23 [patent_figures_cnt] => 30 [patent_no_of_words] => 6584 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 291 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18527950 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/527950
Imaging device and image processing method Dec 3, 2023 Issued
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