Search

David P Porta

Supervisory Patent Examiner (ID: 12383, Phone: (571)272-2444 , Office: P/2884 )

Most Active Art Unit
2506
Art Unit(s)
2884, 2899, 2878, 2882, 3621, 2876, 2506
Total Applications
1617
Issued Applications
1310
Pending Applications
166
Abandoned Applications
141

Applications

Application numberTitle of the applicationFiling DateStatus
07/010101 HIGH DENSITY HIGH STRENGTH CERAMIC ARTICLE AND PROCESS FOR PRODUCING SAME Jan 29, 1987 Abandoned
Array ( [id] => 2478248 [patent_doc_number] => 04876226 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-24 [patent_title] => 'Silicon carbide sintering' [patent_app_type] => 1 [patent_app_number] => 7/002106 [patent_app_country] => US [patent_app_date] => 1987-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2006 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/876/04876226.pdf [firstpage_image] =>[orig_patent_app_number] => 002106 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/002106
Silicon carbide sintering Jan 11, 1987 Issued
07/003028 APPARATUS AND METHOD TO PRODUCE FOAM, AND FOAMED CONCRETE Jan 11, 1987 Abandoned
Array ( [id] => 2438022 [patent_doc_number] => 04778527 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-10-18 [patent_title] => 'Anti-corrosive composition for iron and steel surfaces and the use thereof for protecting the reinforcing steel bars of autoclaved light-weight concrete' [patent_app_type] => 1 [patent_app_number] => 6/947171 [patent_app_country] => US [patent_app_date] => 1986-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2992 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/778/04778527.pdf [firstpage_image] =>[orig_patent_app_number] => 947171 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/947171
Anti-corrosive composition for iron and steel surfaces and the use thereof for protecting the reinforcing steel bars of autoclaved light-weight concrete Dec 28, 1986 Issued
Array ( [id] => 2443963 [patent_doc_number] => 04749666 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-06-07 [patent_title] => 'Indium-based fluoride glasses and their preparation' [patent_app_type] => 1 [patent_app_number] => 6/944154 [patent_app_country] => US [patent_app_date] => 1986-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2131 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/749/04749666.pdf [firstpage_image] =>[orig_patent_app_number] => 944154 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/944154
Indium-based fluoride glasses and their preparation Dec 21, 1986 Issued
Array ( [id] => 2410694 [patent_doc_number] => 04746367 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-05-24 [patent_title] => 'Superplasticizer composition for use with hydraulic cements' [patent_app_type] => 1 [patent_app_number] => 6/943296 [patent_app_country] => US [patent_app_date] => 1986-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2931 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/746/04746367.pdf [firstpage_image] =>[orig_patent_app_number] => 943296 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/943296
Superplasticizer composition for use with hydraulic cements Dec 16, 1986 Issued
Array ( [id] => 2448835 [patent_doc_number] => 04722833 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-02-02 [patent_title] => 'Fine coagulated particles of ultrafine monoclinic zirconia crystals oriented in a fiber bundle-like form and method of manufacturing them' [patent_app_type] => 1 [patent_app_number] => 6/939961 [patent_app_country] => US [patent_app_date] => 1986-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2276 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/722/04722833.pdf [firstpage_image] =>[orig_patent_app_number] => 939961 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/939961
Fine coagulated particles of ultrafine monoclinic zirconia crystals oriented in a fiber bundle-like form and method of manufacturing them Dec 9, 1986 Issued
Array ( [id] => 2545859 [patent_doc_number] => 04814014 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-03-21 [patent_title] => 'Hydraulic cement additives and hydraulic cement compositions containing same' [patent_app_type] => 1 [patent_app_number] => 6/939647 [patent_app_country] => US [patent_app_date] => 1986-12-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4801 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/814/04814014.pdf [firstpage_image] =>[orig_patent_app_number] => 939647 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/939647
Hydraulic cement additives and hydraulic cement compositions containing same Dec 8, 1986 Issued
Array ( [id] => 2385023 [patent_doc_number] => 04753744 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-06-28 [patent_title] => 'Use of perfluoropolyethers in mechanical pumps' [patent_app_type] => 1 [patent_app_number] => 6/931394 [patent_app_country] => US [patent_app_date] => 1986-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1298 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/753/04753744.pdf [firstpage_image] =>[orig_patent_app_number] => 931394 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/931394
Use of perfluoropolyethers in mechanical pumps Nov 13, 1986 Issued
Array ( [id] => 2418484 [patent_doc_number] => 04748136 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-05-31 [patent_title] => 'Ceramic-glass-metal composite' [patent_app_type] => 1 [patent_app_number] => 6/924968 [patent_app_country] => US [patent_app_date] => 1986-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4980 [patent_no_of_claims] => 34 [patent_no_of_ind_claims] => 16 [patent_words_short_claim] => 16 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/748/04748136.pdf [firstpage_image] =>[orig_patent_app_number] => 924968 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/924968
Ceramic-glass-metal composite Oct 29, 1986 Issued
Array ( [id] => 2444687 [patent_doc_number] => 04740486 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-04-26 [patent_title] => 'Ceramic composition to make cement with insulating properties' [patent_app_type] => 1 [patent_app_number] => 6/924891 [patent_app_country] => US [patent_app_date] => 1986-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2254 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/740/04740486.pdf [firstpage_image] =>[orig_patent_app_number] => 924891 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/924891
Ceramic composition to make cement with insulating properties Oct 29, 1986 Issued
Array ( [id] => 2411796 [patent_doc_number] => 04770708 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-09-13 [patent_title] => 'Method of disposing of mining tailings' [patent_app_type] => 1 [patent_app_number] => 6/923201 [patent_app_country] => US [patent_app_date] => 1986-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1955 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/770/04770708.pdf [firstpage_image] =>[orig_patent_app_number] => 923201 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/923201
Method of disposing of mining tailings Oct 26, 1986 Issued
Array ( [id] => 2438061 [patent_doc_number] => 04778529 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-10-18 [patent_title] => 'Cementitious compositions comprising a water soluble polymer and a cross-linking agent therefor' [patent_app_type] => 1 [patent_app_number] => 6/917862 [patent_app_country] => US [patent_app_date] => 1986-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4249 [patent_no_of_claims] => 34 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/778/04778529.pdf [firstpage_image] =>[orig_patent_app_number] => 917862 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/917862
Cementitious compositions comprising a water soluble polymer and a cross-linking agent therefor Oct 13, 1986 Issued
Array ( [id] => 2522108 [patent_doc_number] => 04888058 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-19 [patent_title] => 'Silica fume slurry' [patent_app_type] => 1 [patent_app_number] => 6/912018 [patent_app_country] => US [patent_app_date] => 1986-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2330 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/888/04888058.pdf [firstpage_image] =>[orig_patent_app_number] => 912018 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/912018
Silica fume slurry Sep 28, 1986 Issued
Array ( [id] => 2450641 [patent_doc_number] => 04732878 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-03-22 [patent_title] => 'Oxidation resistant carbon containing alumina-silica articles' [patent_app_type] => 1 [patent_app_number] => 6/912829 [patent_app_country] => US [patent_app_date] => 1986-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8286 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/732/04732878.pdf [firstpage_image] =>[orig_patent_app_number] => 912829 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/912829
Oxidation resistant carbon containing alumina-silica articles Sep 25, 1986 Issued
06/903703 FORMING AIDS FOR CERAMIC MATERIALS, CERAMIC BODIES FORMED BY USING THE AIDS, AND PROCESS OF PRODUCING CERAMIC PRODUCTS Sep 3, 1986 Abandoned
Array ( [id] => 2411356 [patent_doc_number] => 04761388 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-08-02 [patent_title] => 'In organic fibers containing fine crystals of AlN and Al.sub.2 O.sub.3 and process for their production' [patent_app_type] => 1 [patent_app_number] => 6/903142 [patent_app_country] => US [patent_app_date] => 1986-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2696 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/761/04761388.pdf [firstpage_image] =>[orig_patent_app_number] => 903142 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/903142
In organic fibers containing fine crystals of AlN and Al.sub.2 O.sub.3 and process for their production Sep 2, 1986 Issued
Array ( [id] => 2634950 [patent_doc_number] => 04892848 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-09 [patent_title] => 'Silicon nitride sintered body and process for preparation thereof' [patent_app_type] => 1 [patent_app_number] => 6/891854 [patent_app_country] => US [patent_app_date] => 1986-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4504 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/892/04892848.pdf [firstpage_image] =>[orig_patent_app_number] => 891854 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/891854
Silicon nitride sintered body and process for preparation thereof Jul 28, 1986 Issued
Array ( [id] => 2393430 [patent_doc_number] => 04769348 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-09-06 [patent_title] => 'Fabrication of refractory insulating materials consisting essentially of a carbon matrix containing a dispersion of SiC- or Si.sub.3 N.sub.4 -lined voids' [patent_app_type] => 1 [patent_app_number] => 6/889700 [patent_app_country] => US [patent_app_date] => 1986-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1067 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/769/04769348.pdf [firstpage_image] =>[orig_patent_app_number] => 889700 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/889700
Fabrication of refractory insulating materials consisting essentially of a carbon matrix containing a dispersion of SiC- or Si.sub.3 N.sub.4 -lined voids Jul 27, 1986 Issued
06/878454 STRUCTURAL CERAMIC MATERIALS Jun 24, 1986 Abandoned
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