Search

Frederick F. Krass

Supervisory Patent Examiner (ID: 1957, Phone: (571)272-0580 , Office: P/1612 )

Most Active Art Unit
1614
Art Unit(s)
1614, 1503, 1612, 2899, 1501
Total Applications
2178
Issued Applications
1357
Pending Applications
298
Abandoned Applications
523

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 13849055 [patent_doc_number] => 20190028012 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-24 [patent_title] => ENERGY STORAGE, HYDROGEN AND OXYGEN PRODUCTION USING ION SEPARATORS [patent_app_type] => utility [patent_app_number] => 16/041812 [patent_app_country] => US [patent_app_date] => 2018-07-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5104 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 384 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16041812 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/041812
Energy storage, hydrogen and oxygen production using ion separators Jul 21, 2018 Issued
Array ( [id] => 16940918 [patent_doc_number] => 11053138 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-07-06 [patent_title] => Method of removing arsenic from a liquid [patent_app_type] => utility [patent_app_number] => 16/030807 [patent_app_country] => US [patent_app_date] => 2018-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 22 [patent_no_of_words] => 6081 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16030807 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/030807
Method of removing arsenic from a liquid Jul 8, 2018 Issued
Array ( [id] => 14531953 [patent_doc_number] => 20190201597 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-07-04 [patent_title] => DUAL IN-SERIES LARGE AND SMALL DROPLET FILTERS [patent_app_type] => utility [patent_app_number] => 16/024273 [patent_app_country] => US [patent_app_date] => 2018-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 58877 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16024273 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/024273
Dual in-series large and small droplet filters Jun 28, 2018 Issued
Array ( [id] => 16368941 [patent_doc_number] => 10800681 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-10-13 [patent_title] => Wastewater treatment method and wastewater treatment system [patent_app_type] => utility [patent_app_number] => 16/022297 [patent_app_country] => US [patent_app_date] => 2018-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 6259 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16022297 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/022297
Wastewater treatment method and wastewater treatment system Jun 27, 2018 Issued
Array ( [id] => 13520247 [patent_doc_number] => 20180311666 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-11-01 [patent_title] => CARTRIDGE, DIGITAL MICROFLUIDICS SYSTEM AND METHOD OF CONTROL AND MANIPULATION LIQUIDS [patent_app_type] => utility [patent_app_number] => 16/017322 [patent_app_country] => US [patent_app_date] => 2018-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14974 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 254 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16017322 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/017322
CARTRIDGE, DIGITAL MICROFLUIDICS SYSTEM AND METHOD OF CONTROL AND MANIPULATION LIQUIDS Jun 24, 2018 Abandoned
Array ( [id] => 13477129 [patent_doc_number] => 20180290107 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-11 [patent_title] => FILTER DEVICE [patent_app_type] => utility [patent_app_number] => 16/004596 [patent_app_country] => US [patent_app_date] => 2018-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6584 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16004596 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/004596
Filter device Jun 10, 2018 Issued
Array ( [id] => 13589593 [patent_doc_number] => 20180346345 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-12-06 [patent_title] => FILTRATION SYSTEM AND REPLACEMENT METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 15/995914 [patent_app_country] => US [patent_app_date] => 2018-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2171 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15995914 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/995914
Filtration system and replacement method thereof May 31, 2018 Issued
Array ( [id] => 15421169 [patent_doc_number] => 10543491 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-01-28 [patent_title] => Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore [patent_app_type] => utility [patent_app_number] => 15/991690 [patent_app_country] => US [patent_app_date] => 2018-05-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3617 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 447 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15991690 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/991690
Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore May 28, 2018 Issued
Array ( [id] => 17821758 [patent_doc_number] => 11426684 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-30 [patent_title] => Strainer for use in fluid piping [patent_app_type] => utility [patent_app_number] => 16/616048 [patent_app_country] => US [patent_app_date] => 2018-05-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 6107 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 258 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16616048 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/616048
Strainer for use in fluid piping May 24, 2018 Issued
Array ( [id] => 15086337 [patent_doc_number] => 20190337979 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-07 [patent_title] => METHODS, DEVICES AND SYSTEMS FOR 3-STAGE FILTRATION [patent_app_type] => utility [patent_app_number] => 15/972442 [patent_app_country] => US [patent_app_date] => 2018-05-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7448 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15972442 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/972442
Methods, devices and systems for 3-stage filtration May 6, 2018 Issued
Array ( [id] => 18102585 [patent_doc_number] => 11542463 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-03 [patent_title] => Micro algae harvesting methods and devices [patent_app_type] => utility [patent_app_number] => 16/500675 [patent_app_country] => US [patent_app_date] => 2018-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 12945 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16500675 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/500675
Micro algae harvesting methods and devices Apr 12, 2018 Issued
Array ( [id] => 17540191 [patent_doc_number] => 11305296 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-04-19 [patent_title] => Multiphase fluid dispenser [patent_app_type] => utility [patent_app_number] => 16/613966 [patent_app_country] => US [patent_app_date] => 2018-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 9 [patent_no_of_words] => 3546 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16613966 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/613966
Multiphase fluid dispenser Mar 28, 2018 Issued
Array ( [id] => 17814574 [patent_doc_number] => 11420164 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-23 [patent_title] => Method of deionizing saline water with a diffusion barrier [patent_app_type] => utility [patent_app_number] => 15/908922 [patent_app_country] => US [patent_app_date] => 2018-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 24 [patent_no_of_words] => 8604 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15908922 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/908922
Method of deionizing saline water with a diffusion barrier Feb 28, 2018 Issued
Array ( [id] => 15738893 [patent_doc_number] => 20200108334 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-09 [patent_title] => FLOCCULATION AND SEDIMENTATION APPARATUS [patent_app_type] => utility [patent_app_number] => 16/486389 [patent_app_country] => US [patent_app_date] => 2018-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11276 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16486389 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/486389
Flocculation and sedimentation apparatus Feb 21, 2018 Issued
Array ( [id] => 12771250 [patent_doc_number] => 20180148918 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-05-31 [patent_title] => Ring Grit Remover [patent_app_type] => utility [patent_app_number] => 15/884516 [patent_app_country] => US [patent_app_date] => 2018-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4069 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15884516 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/884516
Ring grit remover Jan 30, 2018 Issued
Array ( [id] => 13298393 [patent_doc_number] => 20180200733 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-07-19 [patent_title] => CERAMIC HYDROCYCLONE [patent_app_type] => utility [patent_app_number] => 15/872101 [patent_app_country] => US [patent_app_date] => 2018-01-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5897 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15872101 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/872101
Ceramic hydrocyclone Jan 15, 2018 Issued
Array ( [id] => 12912562 [patent_doc_number] => 20180196030 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-07-12 [patent_title] => APPARATUS AND METHOD FOR SEPARATING AND CONCENTRATING FLUIDS CONTAINING MULTIPLE COMPONENTS [patent_app_type] => utility [patent_app_number] => 15/866658 [patent_app_country] => US [patent_app_date] => 2018-01-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15253 [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] => 15866658 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/866658
Apparatus and method for separating and concentrating fluids containing multiple components Jan 9, 2018 Issued
Array ( [id] => 17421461 [patent_doc_number] => 11254906 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-22 [patent_title] => Automatic purification system and biological sample purification method [patent_app_type] => utility [patent_app_number] => 16/475873 [patent_app_country] => US [patent_app_date] => 2018-01-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 6470 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 266 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16475873 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/475873
Automatic purification system and biological sample purification method Jan 3, 2018 Issued
Array ( [id] => 16214249 [patent_doc_number] => 10730042 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-08-04 [patent_title] => Biological detection system [patent_app_type] => utility [patent_app_number] => 15/861266 [patent_app_country] => US [patent_app_date] => 2018-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 3961 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 322 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15861266 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/861266
Biological detection system Jan 2, 2018 Issued
Array ( [id] => 14498711 [patent_doc_number] => 20190193010 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-27 [patent_title] => FILTERING PLATE AND METHOD FOR MAKING THE SAME AND FILTERING DEVICE HAVING THE SAME [patent_app_type] => utility [patent_app_number] => 15/854322 [patent_app_country] => US [patent_app_date] => 2017-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2310 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15854322 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/854322
FILTERING PLATE AND METHOD FOR MAKING THE SAME AND FILTERING DEVICE HAVING THE SAME Dec 25, 2017 Abandoned
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