Search

David B. Springer

Examiner (ID: 141)

Most Active Art Unit
1201
Art Unit(s)
1209, 2401, 1621, 2506, 1201, 1202, 1802, 1613
Total Applications
2063
Issued Applications
1774
Pending Applications
26
Abandoned Applications
263

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 3659223 [patent_doc_number] => 05591752 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-01-07 [patent_title] => 'Quinoline derivative' [patent_app_type] => 1 [patent_app_number] => 8/505172 [patent_app_country] => US [patent_app_date] => 1995-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 28795 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 18 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/591/05591752.pdf [firstpage_image] =>[orig_patent_app_number] => 505172 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/505172
Quinoline derivative Aug 15, 1995 Issued
Array ( [id] => 3602990 [patent_doc_number] => 05578609 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-11-26 [patent_title] => '2-carbocyclic and 2-heterocyclic quinoline-4-carboxylic acids and salts thereof useful as immunosuppressive agents' [patent_app_type] => 1 [patent_app_number] => 8/510933 [patent_app_country] => US [patent_app_date] => 1995-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19081 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/578/05578609.pdf [firstpage_image] =>[orig_patent_app_number] => 510933 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/510933
2-carbocyclic and 2-heterocyclic quinoline-4-carboxylic acids and salts thereof useful as immunosuppressive agents Aug 2, 1995 Issued
Array ( [id] => 3564158 [patent_doc_number] => 05525733 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-06-11 [patent_title] => 'Process for preparing tetrazole-5-carboxylic acid derivatives' [patent_app_type] => 1 [patent_app_number] => 8/495562 [patent_app_country] => US [patent_app_date] => 1995-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2926 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 30 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/525/05525733.pdf [firstpage_image] =>[orig_patent_app_number] => 495562 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/495562
Process for preparing tetrazole-5-carboxylic acid derivatives Jul 31, 1995 Issued
Array ( [id] => 3591787 [patent_doc_number] => 05585500 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-12-17 [patent_title] => 'Method of producing optically active pyrrolidines with high enantiomeric purity' [patent_app_type] => 1 [patent_app_number] => 8/501282 [patent_app_country] => US [patent_app_date] => 1995-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3510 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/585/05585500.pdf [firstpage_image] =>[orig_patent_app_number] => 501282 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/501282
Method of producing optically active pyrrolidines with high enantiomeric purity Jul 16, 1995 Issued
Array ( [id] => 3551243 [patent_doc_number] => 05547991 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-08-20 [patent_title] => 'NMDA antagonism method' [patent_app_type] => 1 [patent_app_number] => 8/502980 [patent_app_country] => US [patent_app_date] => 1995-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10298 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/547/05547991.pdf [firstpage_image] =>[orig_patent_app_number] => 502980 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/502980
NMDA antagonism method Jul 16, 1995 Issued
08/491928 PROPENONE DERIVATIVES Jul 12, 1995 Abandoned
Array ( [id] => 3495134 [patent_doc_number] => 05561234 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-10-01 [patent_title] => '1-(7-chloroquinolin-4-yl)pyrazole-3-carboxamide N-oxide derivatives, method of preparing them, and their pharmaceutical compositions' [patent_app_type] => 1 [patent_app_number] => 8/499726 [patent_app_country] => US [patent_app_date] => 1995-07-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3995 [patent_no_of_claims] => 11 [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/05/561/05561234.pdf [firstpage_image] =>[orig_patent_app_number] => 499726 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/499726
1-(7-chloroquinolin-4-yl)pyrazole-3-carboxamide N-oxide derivatives, method of preparing them, and their pharmaceutical compositions Jul 6, 1995 Issued
Array ( [id] => 3660886 [patent_doc_number] => 05591865 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-01-07 [patent_title] => 'Crystal modification of a diketopyrrolopyrrole pigment' [patent_app_type] => 1 [patent_app_number] => 8/493853 [patent_app_country] => US [patent_app_date] => 1995-06-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2652 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/591/05591865.pdf [firstpage_image] =>[orig_patent_app_number] => 493853 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/493853
Crystal modification of a diketopyrrolopyrrole pigment Jun 21, 1995 Issued
Array ( [id] => 3573962 [patent_doc_number] => 05539125 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-07-23 [patent_title] => '1-azabicyclo[3.3.0]octan derivative, salt thereof, process for the preparation of same and use thereof as hypermotility agents' [patent_app_type] => 1 [patent_app_number] => 8/489709 [patent_app_country] => US [patent_app_date] => 1995-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3744 [patent_no_of_claims] => 6 [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/05/539/05539125.pdf [firstpage_image] =>[orig_patent_app_number] => 489709 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/489709
1-azabicyclo[3.3.0]octan derivative, salt thereof, process for the preparation of same and use thereof as hypermotility agents Jun 12, 1995 Issued
Array ( [id] => 3559954 [patent_doc_number] => 05502209 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-03-26 [patent_title] => 'Benzopyrancarboxamide derivatives, salts thereof, process for the preparation of same and use thereof' [patent_app_type] => 1 [patent_app_number] => 8/489770 [patent_app_country] => US [patent_app_date] => 1995-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3483 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/502/05502209.pdf [firstpage_image] =>[orig_patent_app_number] => 489770 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/489770
Benzopyrancarboxamide derivatives, salts thereof, process for the preparation of same and use thereof Jun 12, 1995 Issued
Array ( [id] => 3576786 [patent_doc_number] => 05523412 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-06-04 [patent_title] => 'Intermediates for 4-arylcyclohepta[c]pyrrole analgesics' [patent_app_type] => 1 [patent_app_number] => 8/495735 [patent_app_country] => US [patent_app_date] => 1995-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3956 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/523/05523412.pdf [firstpage_image] =>[orig_patent_app_number] => 495735 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/495735
Intermediates for 4-arylcyclohepta[c]pyrrole analgesics Jun 7, 1995 Issued
Array ( [id] => 3626213 [patent_doc_number] => 05608079 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-03-04 [patent_title] => 'Certain fused pyrrolecarboxanilides; a new class of GABA brain receptor ligands' [patent_app_type] => 1 [patent_app_number] => 8/473509 [patent_app_country] => US [patent_app_date] => 1995-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 20 [patent_no_of_words] => 8290 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/608/05608079.pdf [firstpage_image] =>[orig_patent_app_number] => 473509 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/473509
Certain fused pyrrolecarboxanilides; a new class of GABA brain receptor ligands Jun 6, 1995 Issued
Array ( [id] => 3498781 [patent_doc_number] => 05532374 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-07-02 [patent_title] => 'Method of preparation of bis-quinolines' [patent_app_type] => 1 [patent_app_number] => 8/467462 [patent_app_country] => US [patent_app_date] => 1995-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4093 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/532/05532374.pdf [firstpage_image] =>[orig_patent_app_number] => 467462 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/467462
Method of preparation of bis-quinolines Jun 5, 1995 Issued
Array ( [id] => 3660242 [patent_doc_number] => 05659063 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-08-19 [patent_title] => 'Intermediates for amidino phenyl pyrrolidine .beta.-alanine urea analogs' [patent_app_type] => 1 [patent_app_number] => 8/467417 [patent_app_country] => US [patent_app_date] => 1995-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6239 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 36 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/659/05659063.pdf [firstpage_image] =>[orig_patent_app_number] => 467417 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/467417
Intermediates for amidino phenyl pyrrolidine .beta.-alanine urea analogs Jun 5, 1995 Issued
Array ( [id] => 3569678 [patent_doc_number] => 05484946 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-01-16 [patent_title] => 'Process for the preparation of amidino phenyl pyrrolidine .beta.-alanine urea analogs' [patent_app_type] => 1 [patent_app_number] => 8/463657 [patent_app_country] => US [patent_app_date] => 1995-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6239 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/484/05484946.pdf [firstpage_image] =>[orig_patent_app_number] => 463657 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/463657
Process for the preparation of amidino phenyl pyrrolidine .beta.-alanine urea analogs Jun 4, 1995 Issued
Array ( [id] => 3518369 [patent_doc_number] => 05576447 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1996-11-19 [patent_title] => 'Process for the preparation of amidino phenyl pyrrolidine .beta.-alanine urea analogs' [patent_app_type] => 1 [patent_app_number] => 8/465212 [patent_app_country] => US [patent_app_date] => 1995-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6254 [patent_no_of_claims] => 7 [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/05/576/05576447.pdf [firstpage_image] =>[orig_patent_app_number] => 465212 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/465212
Process for the preparation of amidino phenyl pyrrolidine .beta.-alanine urea analogs Jun 4, 1995 Issued
Array ( [id] => 3705878 [patent_doc_number] => 05654260 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-08-05 [patent_title] => 'Corrosion inhibitor for wellbore applications' [patent_app_type] => 1 [patent_app_number] => 8/458625 [patent_app_country] => US [patent_app_date] => 1995-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9072 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 34 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/654/05654260.pdf [firstpage_image] =>[orig_patent_app_number] => 458625 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/458625
Corrosion inhibitor for wellbore applications Jun 1, 1995 Issued
Array ( [id] => 3621914 [patent_doc_number] => 05641798 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-06-24 [patent_title] => 'Bicyclic compounds and their use as excitatory amino acid receptor antagonists' [patent_app_type] => 1 [patent_app_number] => 8/457924 [patent_app_country] => US [patent_app_date] => 1995-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17556 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 412 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/641/05641798.pdf [firstpage_image] =>[orig_patent_app_number] => 457924 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/457924
Bicyclic compounds and their use as excitatory amino acid receptor antagonists May 31, 1995 Issued
Array ( [id] => 3660900 [patent_doc_number] => 05591866 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-01-07 [patent_title] => '(1H-indol-1-yl)-2-(amino)acetamide derivatives and preparation thereof' [patent_app_type] => 1 [patent_app_number] => 8/457723 [patent_app_country] => US [patent_app_date] => 1995-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13274 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/591/05591866.pdf [firstpage_image] =>[orig_patent_app_number] => 457723 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/457723
(1H-indol-1-yl)-2-(amino)acetamide derivatives and preparation thereof May 31, 1995 Issued
Array ( [id] => 3624414 [patent_doc_number] => 05607963 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-03-04 [patent_title] => 'Maleimide pesticides and compositions thereof' [patent_app_type] => 1 [patent_app_number] => 8/456309 [patent_app_country] => US [patent_app_date] => 1995-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5800 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 15 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/607/05607963.pdf [firstpage_image] =>[orig_patent_app_number] => 456309 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/456309
Maleimide pesticides and compositions thereof May 31, 1995 Issued
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