Search

David H. Malzahn

Examiner (ID: 17134, Phone: (571)272-3727 , Office: P/2182 )

Most Active Art Unit
2193
Art Unit(s)
2193, 2306, 2301, 2787, 2182, 2121, 2302, 2124, 2183, 2307, 2786
Total Applications
3174
Issued Applications
2743
Pending Applications
60
Abandoned Applications
371

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2418169 [patent_doc_number] => 04761756 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-08-02 [patent_title] => 'Signed multiplier with three port adder and automatic adjustment for signed operands' [patent_app_type] => 1 [patent_app_number] => 6/883468 [patent_app_country] => US [patent_app_date] => 1986-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3811 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 512 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/761/04761756.pdf [firstpage_image] =>[orig_patent_app_number] => 883468 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/883468
Signed multiplier with three port adder and automatic adjustment for signed operands Jul 10, 1986 Issued
Array ( [id] => 2451141 [patent_doc_number] => 04792916 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-12-20 [patent_title] => 'Digital signal processing device working with continuous bit streams' [patent_app_type] => 1 [patent_app_number] => 6/878860 [patent_app_country] => US [patent_app_date] => 1986-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 11 [patent_no_of_words] => 5146 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/792/04792916.pdf [firstpage_image] =>[orig_patent_app_number] => 878860 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/878860
Digital signal processing device working with continuous bit streams Jun 25, 1986 Issued
Array ( [id] => 2460853 [patent_doc_number] => 04760548 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-07-26 [patent_title] => 'Method and apparatus for producing a curve image' [patent_app_type] => 1 [patent_app_number] => 6/873902 [patent_app_country] => US [patent_app_date] => 1986-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 6975 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/760/04760548.pdf [firstpage_image] =>[orig_patent_app_number] => 873902 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/873902
Method and apparatus for producing a curve image Jun 12, 1986 Issued
Array ( [id] => 2305190 [patent_doc_number] => 04682301 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-07-21 [patent_title] => 'Digital filter for processing two-dimensional digital image' [patent_app_type] => 1 [patent_app_number] => 6/871246 [patent_app_country] => US [patent_app_date] => 1986-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 14 [patent_no_of_words] => 4480 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/682/04682301.pdf [firstpage_image] =>[orig_patent_app_number] => 871246 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/871246
Digital filter for processing two-dimensional digital image Jun 5, 1986 Issued
Array ( [id] => 2535314 [patent_doc_number] => 04797844 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-01-10 [patent_title] => 'Digital mixing apparatus which attenuates the sum frequency of the mixed signals' [patent_app_type] => 1 [patent_app_number] => 6/870890 [patent_app_country] => US [patent_app_date] => 1986-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 2619 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/797/04797844.pdf [firstpage_image] =>[orig_patent_app_number] => 870890 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/870890
Digital mixing apparatus which attenuates the sum frequency of the mixed signals Jun 4, 1986 Issued
Array ( [id] => 2458051 [patent_doc_number] => 04758972 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-07-19 [patent_title] => 'Precision rounding in a floating point arithmetic unit' [patent_app_type] => 1 [patent_app_number] => 6/869861 [patent_app_country] => US [patent_app_date] => 1986-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3503 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/758/04758972.pdf [firstpage_image] =>[orig_patent_app_number] => 869861 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/869861
Precision rounding in a floating point arithmetic unit Jun 1, 1986 Issued
Array ( [id] => 2397486 [patent_doc_number] => 04794554 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-12-27 [patent_title] => 'Electronic calculator having a graph display function' [patent_app_type] => 1 [patent_app_number] => 6/868302 [patent_app_country] => US [patent_app_date] => 1986-05-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 35 [patent_figures_cnt] => 68 [patent_no_of_words] => 17513 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/794/04794554.pdf [firstpage_image] =>[orig_patent_app_number] => 868302 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/868302
Electronic calculator having a graph display function May 26, 1986 Issued
Array ( [id] => 2531551 [patent_doc_number] => 04797651 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-01-10 [patent_title] => 'Multicolor comparator of digital signals' [patent_app_type] => 1 [patent_app_number] => 6/866929 [patent_app_country] => US [patent_app_date] => 1986-05-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 11 [patent_no_of_words] => 4578 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 10 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/797/04797651.pdf [firstpage_image] =>[orig_patent_app_number] => 866929 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/866929
Multicolor comparator of digital signals May 26, 1986 Issued
Array ( [id] => 2452973 [patent_doc_number] => 04745570 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-05-17 [patent_title] => 'Binary multibit multiplier' [patent_app_type] => 1 [patent_app_number] => 6/867167 [patent_app_country] => US [patent_app_date] => 1986-05-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 2706 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/745/04745570.pdf [firstpage_image] =>[orig_patent_app_number] => 867167 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/867167
Binary multibit multiplier May 26, 1986 Issued
Array ( [id] => 2594631 [patent_doc_number] => 04891777 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-02 [patent_title] => 'Single hand keyboard arrays providing alphanumeric capabilities from twelve keys' [patent_app_type] => 1 [patent_app_number] => 6/862647 [patent_app_country] => US [patent_app_date] => 1986-05-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 15 [patent_no_of_words] => 6060 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/891/04891777.pdf [firstpage_image] =>[orig_patent_app_number] => 862647 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/862647
Single hand keyboard arrays providing alphanumeric capabilities from twelve keys May 12, 1986 Issued
Array ( [id] => 2451123 [patent_doc_number] => 04792915 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-12-20 [patent_title] => 'Non linear adaptive filters' [patent_app_type] => 1 [patent_app_number] => 6/861412 [patent_app_country] => US [patent_app_date] => 1986-05-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 3207 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/792/04792915.pdf [firstpage_image] =>[orig_patent_app_number] => 861412 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/861412
Non linear adaptive filters May 8, 1986 Issued
Array ( [id] => 2397470 [patent_doc_number] => 04794553 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-12-27 [patent_title] => 'Compact electronic calculator having graph display function' [patent_app_type] => 1 [patent_app_number] => 6/861340 [patent_app_country] => US [patent_app_date] => 1986-05-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 29 [patent_figures_cnt] => 46 [patent_no_of_words] => 10109 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/794/04794553.pdf [firstpage_image] =>[orig_patent_app_number] => 861340 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/861340
Compact electronic calculator having graph display function May 8, 1986 Issued
Array ( [id] => 2343274 [patent_doc_number] => RE032480 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-08-18 [patent_title] => 'Electronic bingo player' [patent_app_type] => 2 [patent_app_number] => 6/861244 [patent_app_country] => US [patent_app_date] => 1986-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2673 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/RE/032/RE032480.pdf [firstpage_image] =>[orig_patent_app_number] => 861244 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/861244
Electronic bingo player May 7, 1986 Issued
Array ( [id] => 2451210 [patent_doc_number] => 04779219 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-10-18 [patent_title] => 'Electronic apparatus having an improved calculation function' [patent_app_type] => 1 [patent_app_number] => 6/860024 [patent_app_country] => US [patent_app_date] => 1986-05-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3529 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/779/04779219.pdf [firstpage_image] =>[orig_patent_app_number] => 860024 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/860024
Electronic apparatus having an improved calculation function May 5, 1986 Issued
Array ( [id] => 2490908 [patent_doc_number] => 04823296 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-04-18 [patent_title] => 'First order digital filter with controlled boost/truncate quantizer' [patent_app_type] => 1 [patent_app_number] => 6/856474 [patent_app_country] => US [patent_app_date] => 1986-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2238 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/823/04823296.pdf [firstpage_image] =>[orig_patent_app_number] => 856474 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/856474
First order digital filter with controlled boost/truncate quantizer Apr 27, 1986 Issued
Array ( [id] => 2434622 [patent_doc_number] => 04739503 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-04-19 [patent_title] => 'Carry/borrow propagate adder/subtractor' [patent_app_type] => 1 [patent_app_number] => 6/853854 [patent_app_country] => US [patent_app_date] => 1986-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2747 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/739/04739503.pdf [firstpage_image] =>[orig_patent_app_number] => 853854 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/853854
Carry/borrow propagate adder/subtractor Apr 20, 1986 Issued
Array ( [id] => 2418097 [patent_doc_number] => 04761752 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-08-02 [patent_title] => 'Fractional step correlator' [patent_app_type] => 1 [patent_app_number] => 6/854260 [patent_app_country] => US [patent_app_date] => 1986-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 16 [patent_no_of_words] => 3427 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 20 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/761/04761752.pdf [firstpage_image] =>[orig_patent_app_number] => 854260 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/854260
Fractional step correlator Apr 20, 1986 Issued
06/850565 CONTOURED TOUCH TYPE DATA PROCESSING KEYBOARD Apr 10, 1986 Abandoned
Array ( [id] => 2725115 [patent_doc_number] => 05053983 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-01 [patent_title] => 'Filter system having an adaptive control for updating filter samples' [patent_app_type] => 1 [patent_app_number] => 6/849071 [patent_app_country] => US [patent_app_date] => 1986-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 50 [patent_no_of_words] => 153095 [patent_no_of_claims] => 38 [patent_no_of_ind_claims] => 32 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/053/05053983.pdf [firstpage_image] =>[orig_patent_app_number] => 849071 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/849071
Filter system having an adaptive control for updating filter samples Apr 3, 1986 Issued
Array ( [id] => 2539193 [patent_doc_number] => 04839845 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-06-13 [patent_title] => 'Method and apparatus for performing a vector reduction' [patent_app_type] => 1 [patent_app_number] => 6/846414 [patent_app_country] => US [patent_app_date] => 1986-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 11 [patent_no_of_words] => 3368 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 281 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/839/04839845.pdf [firstpage_image] =>[orig_patent_app_number] => 846414 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/846414
Method and apparatus for performing a vector reduction Mar 30, 1986 Issued
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