Search

Michael C. Krofcheck

Examiner (ID: 6429, Phone: (571)272-8193 , Office: P/2138 )

Most Active Art Unit
2138
Art Unit(s)
2138, 2188, 2186
Total Applications
794
Issued Applications
629
Pending Applications
53
Abandoned Applications
139

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18030108 [patent_doc_number] => 11513289 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-11-29 [patent_title] => Silicon photonics device for LIDAR sensor and method for fabrication [patent_app_type] => utility [patent_app_number] => 17/535024 [patent_app_country] => US [patent_app_date] => 2021-11-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 18 [patent_no_of_words] => 8379 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17535024 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/535024
Silicon photonics device for LIDAR sensor and method for fabrication Nov 23, 2021 Issued
Array ( [id] => 18734281 [patent_doc_number] => 11803010 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-31 [patent_title] => Optical couplers with diagonal light transfer [patent_app_type] => utility [patent_app_number] => 17/524218 [patent_app_country] => US [patent_app_date] => 2021-11-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 12 [patent_no_of_words] => 4179 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17524218 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/524218
Optical couplers with diagonal light transfer Nov 10, 2021 Issued
Array ( [id] => 18321695 [patent_doc_number] => 20230119823 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-04-20 [patent_title] => Optical Assembly [patent_app_type] => utility [patent_app_number] => 17/924576 [patent_app_country] => US [patent_app_date] => 2021-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7111 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17924576 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/924576
Optical assembly Sep 26, 2021 Issued
Array ( [id] => 18103707 [patent_doc_number] => 11543589 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-03 [patent_title] => Process flow with wet etching for smooth sidewalls in silicon nitride waveguides [patent_app_type] => utility [patent_app_number] => 17/475250 [patent_app_country] => US [patent_app_date] => 2021-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2071 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17475250 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/475250
Process flow with wet etching for smooth sidewalls in silicon nitride waveguides Sep 13, 2021 Issued
Array ( [id] => 18735711 [patent_doc_number] => 11804452 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-31 [patent_title] => Pic structure having barrier surrounding opening for optical element to prevent stress damage [patent_app_type] => utility [patent_app_number] => 17/389759 [patent_app_country] => US [patent_app_date] => 2021-07-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 15 [patent_no_of_words] => 6017 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17389759 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/389759
Pic structure having barrier surrounding opening for optical element to prevent stress damage Jul 29, 2021 Issued
Array ( [id] => 17861070 [patent_doc_number] => 11442226 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-13 [patent_title] => Integrated photonics optical gyroscopes with improved sensitivity utilizing high density silicon nitride waveguides [patent_app_type] => utility [patent_app_number] => 17/364279 [patent_app_country] => US [patent_app_date] => 2021-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2939 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17364279 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/364279
Integrated photonics optical gyroscopes with improved sensitivity utilizing high density silicon nitride waveguides Jun 29, 2021 Issued
Array ( [id] => 17345181 [patent_doc_number] => 20220011512 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-13 [patent_title] => OPTICAL FIBER SYSTEM EMPLOYING TOPOLOGICAL GUIDANCE OF LIGHT [patent_app_type] => utility [patent_app_number] => 17/315314 [patent_app_country] => US [patent_app_date] => 2021-05-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6404 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17315314 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/315314
Optical fiber system employing topological guidance of light May 8, 2021 Issued
Array ( [id] => 17961590 [patent_doc_number] => 20220342171 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-27 [patent_title] => TWO-BY-TWO CABLE ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/236124 [patent_app_country] => US [patent_app_date] => 2021-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3969 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17236124 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/236124
Two-by-two cable assembly Apr 20, 2021 Issued
Array ( [id] => 17008831 [patent_doc_number] => 20210239992 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-05 [patent_title] => MICROLENS COLLIMATOR FOR SCANNING OPTICAL FIBER IN VIRTUAL/AUGMENTED REALITY SYSTEM [patent_app_type] => utility [patent_app_number] => 17/234968 [patent_app_country] => US [patent_app_date] => 2021-04-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10131 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17234968 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/234968
Microlens collimator for scanning optical fiber in virtual/augmented reality system Apr 19, 2021 Issued
Array ( [id] => 18635516 [patent_doc_number] => 11760092 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-19 [patent_title] => Inkjet head, inkjet head subassembly, inkjet head assembly and inkjet printer [patent_app_type] => utility [patent_app_number] => 17/232675 [patent_app_country] => US [patent_app_date] => 2021-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 9016 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17232675 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/232675
Inkjet head, inkjet head subassembly, inkjet head assembly and inkjet printer Apr 15, 2021 Issued
Array ( [id] => 18792368 [patent_doc_number] => 11826097 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-28 [patent_title] => Forming radial emissions from optical fibers [patent_app_type] => utility [patent_app_number] => 17/224354 [patent_app_country] => US [patent_app_date] => 2021-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 34 [patent_no_of_words] => 15356 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17224354 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/224354
Forming radial emissions from optical fibers Apr 6, 2021 Issued
Array ( [id] => 17991460 [patent_doc_number] => 20220357497 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-10 [patent_title] => OPTICAL DEVICES FOR MITIGATING GHOST IMAGES [patent_app_type] => utility [patent_app_number] => 17/779663 [patent_app_country] => US [patent_app_date] => 2021-03-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15352 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 17779663 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/779663
Optical devices for mitigating ghost images Mar 16, 2021 Issued
Array ( [id] => 18118710 [patent_doc_number] => 11550100 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-10 [patent_title] => Wavelength-division multiplexing filters including assisted coupling regions [patent_app_type] => utility [patent_app_number] => 17/202729 [patent_app_country] => US [patent_app_date] => 2021-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 4336 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17202729 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/202729
Wavelength-division multiplexing filters including assisted coupling regions Mar 15, 2021 Issued
Array ( [id] => 18749671 [patent_doc_number] => 11808979 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-07 [patent_title] => Device coupon and method of fabrication thereof [patent_app_type] => utility [patent_app_number] => 17/203274 [patent_app_country] => US [patent_app_date] => 2021-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 23 [patent_figures_cnt] => 44 [patent_no_of_words] => 3080 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17203274 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/203274
Device coupon and method of fabrication thereof Mar 15, 2021 Issued
Array ( [id] => 18154304 [patent_doc_number] => 11567280 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-31 [patent_title] => Splice sleeve holder nest [patent_app_type] => utility [patent_app_number] => 17/157663 [patent_app_country] => US [patent_app_date] => 2021-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 24 [patent_no_of_words] => 4870 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17157663 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/157663
Splice sleeve holder nest Jan 24, 2021 Issued
Array ( [id] => 18370270 [patent_doc_number] => 11650439 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-16 [patent_title] => Optical modulator with region epitaxially re-grown over polycrystalline silicon [patent_app_type] => utility [patent_app_number] => 17/147004 [patent_app_country] => US [patent_app_date] => 2021-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 6521 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17147004 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/147004
Optical modulator with region epitaxially re-grown over polycrystalline silicon Jan 11, 2021 Issued
Array ( [id] => 18400452 [patent_doc_number] => 11662585 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-30 [patent_title] => Virtual/augmented reality system having reverse angle diffraction grating [patent_app_type] => utility [patent_app_number] => 17/143432 [patent_app_country] => US [patent_app_date] => 2021-01-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 29 [patent_no_of_words] => 10876 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17143432 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/143432
Virtual/augmented reality system having reverse angle diffraction grating Jan 6, 2021 Issued
Array ( [id] => 18872615 [patent_doc_number] => 11860414 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-02 [patent_title] => Edge couplers including a grooved membrane [patent_app_type] => utility [patent_app_number] => 17/137549 [patent_app_country] => US [patent_app_date] => 2020-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 4113 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17137549 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/137549
Edge couplers including a grooved membrane Dec 29, 2020 Issued
Array ( [id] => 19327227 [patent_doc_number] => 12044907 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-23 [patent_title] => Fast thermal tuning of a planar lightwave circuit [patent_app_type] => utility [patent_app_number] => 16/949929 [patent_app_country] => US [patent_app_date] => 2020-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 4385 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16949929 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/949929
Fast thermal tuning of a planar lightwave circuit Nov 19, 2020 Issued
Array ( [id] => 17939933 [patent_doc_number] => 11474383 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-10-18 [patent_title] => Optical power modulators based on total internal reflection [patent_app_type] => utility [patent_app_number] => 17/092793 [patent_app_country] => US [patent_app_date] => 2020-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 3847 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17092793 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/092793
Optical power modulators based on total internal reflection Nov 8, 2020 Issued
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