Search

Derrick W. Ferris

Supervisory Patent Examiner (ID: 15335, Phone: (571)272-3123 , Office: P/2478 )

Most Active Art Unit
2663
Art Unit(s)
2663, 2411, 2616, 2463, 2400, OPT, 2478
Total Applications
417
Issued Applications
284
Pending Applications
43
Abandoned Applications
91

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2626518 [patent_doc_number] => 04913537 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Vari-focal lens system with switchable auxiliary lens units' [patent_app_type] => 1 [patent_app_number] => 7/267845 [patent_app_country] => US [patent_app_date] => 1988-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 18 [patent_no_of_words] => 3952 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/913/04913537.pdf [firstpage_image] =>[orig_patent_app_number] => 267845 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/267845
Vari-focal lens system with switchable auxiliary lens units Nov 6, 1988 Issued
Array ( [id] => 2586372 [patent_doc_number] => 04964705 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-23 [patent_title] => 'Unit magnification optical system' [patent_app_type] => 1 [patent_app_number] => 7/267965 [patent_app_country] => US [patent_app_date] => 1988-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 3308 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/964/04964705.pdf [firstpage_image] =>[orig_patent_app_number] => 267965 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/267965
Unit magnification optical system Nov 6, 1988 Issued
Array ( [id] => 2613712 [patent_doc_number] => 04950069 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-21 [patent_title] => 'Eye movement detector with improved calibration and speed' [patent_app_type] => 1 [patent_app_number] => 7/267266 [patent_app_country] => US [patent_app_date] => 1988-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 24 [patent_no_of_words] => 12654 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 317 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/950/04950069.pdf [firstpage_image] =>[orig_patent_app_number] => 267266 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/267266
Eye movement detector with improved calibration and speed Nov 3, 1988 Issued
Array ( [id] => 2477541 [patent_doc_number] => 04859052 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-22 [patent_title] => 'Portable screen assembly for visual acuity testing' [patent_app_type] => 1 [patent_app_number] => 7/268629 [patent_app_country] => US [patent_app_date] => 1988-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 1966 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/859/04859052.pdf [firstpage_image] =>[orig_patent_app_number] => 268629 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/268629
Portable screen assembly for visual acuity testing Nov 3, 1988 Issued
Array ( [id] => 2656528 [patent_doc_number] => 04904077 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Eyeglass frame with locked screw joint' [patent_app_type] => 1 [patent_app_number] => 7/262987 [patent_app_country] => US [patent_app_date] => 1988-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 21 [patent_no_of_words] => 2269 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904077.pdf [firstpage_image] =>[orig_patent_app_number] => 262987 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/262987
Eyeglass frame with locked screw joint Oct 25, 1988 Issued
07/260106 COLOR-CORRECTED OPTICAL SYSTEMS WITH LIQUID LENS ELEMENTS Oct 19, 1988 Abandoned
Array ( [id] => 2612200 [patent_doc_number] => 04955713 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-09-11 [patent_title] => 'Spectacles for improving binocular vision' [patent_app_type] => 1 [patent_app_number] => 7/260272 [patent_app_country] => US [patent_app_date] => 1988-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 6 [patent_no_of_words] => 2185 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/955/04955713.pdf [firstpage_image] =>[orig_patent_app_number] => 260272 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/260272
Spectacles for improving binocular vision Oct 19, 1988 Issued
Array ( [id] => 2646740 [patent_doc_number] => 04971431 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-11-20 [patent_title] => 'Device for the temporary fixing of lenses on a spectacle frame' [patent_app_type] => 1 [patent_app_number] => 7/258906 [patent_app_country] => US [patent_app_date] => 1988-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 6 [patent_no_of_words] => 3190 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/971/04971431.pdf [firstpage_image] =>[orig_patent_app_number] => 258906 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/258906
Device for the temporary fixing of lenses on a spectacle frame Oct 16, 1988 Issued
Array ( [id] => 2578005 [patent_doc_number] => 04927260 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-22 [patent_title] => 'Apparatus and method for the precision evaluation of visual function in the fovea centralis (macula) area of the retina' [patent_app_type] => 1 [patent_app_number] => 7/255875 [patent_app_country] => US [patent_app_date] => 1988-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 4921 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/927/04927260.pdf [firstpage_image] =>[orig_patent_app_number] => 255875 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/255875
Apparatus and method for the precision evaluation of visual function in the fovea centralis (macula) area of the retina Oct 10, 1988 Issued
Array ( [id] => 2736411 [patent_doc_number] => 04986649 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-22 [patent_title] => 'Eyeglasses frame with improved frontal support' [patent_app_type] => 1 [patent_app_number] => 7/255476 [patent_app_country] => US [patent_app_date] => 1988-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1281 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/986/04986649.pdf [firstpage_image] =>[orig_patent_app_number] => 255476 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/255476
Eyeglasses frame with improved frontal support Oct 10, 1988 Issued
Array ( [id] => 2626667 [patent_doc_number] => 04913545 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Adapter for lens retaining ring for use in connection with eye examination' [patent_app_type] => 1 [patent_app_number] => 7/254286 [patent_app_country] => US [patent_app_date] => 1988-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 6 [patent_no_of_words] => 1942 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 11 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/913/04913545.pdf [firstpage_image] =>[orig_patent_app_number] => 254286 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/254286
Adapter for lens retaining ring for use in connection with eye examination Oct 5, 1988 Issued
Array ( [id] => 2597570 [patent_doc_number] => 04902121 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-20 [patent_title] => 'Range detector for eye instrument having interrogating beam' [patent_app_type] => 1 [patent_app_number] => 7/253005 [patent_app_country] => US [patent_app_date] => 1988-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1241 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/902/04902121.pdf [firstpage_image] =>[orig_patent_app_number] => 253005 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/253005
Range detector for eye instrument having interrogating beam Oct 3, 1988 Issued
Array ( [id] => 2586651 [patent_doc_number] => 04940323 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-10 [patent_title] => 'Light stimulator' [patent_app_type] => 1 [patent_app_number] => 7/253900 [patent_app_country] => US [patent_app_date] => 1988-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 3150 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/940/04940323.pdf [firstpage_image] =>[orig_patent_app_number] => 253900 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/253900
Light stimulator Oct 3, 1988 Issued
Array ( [id] => 2580544 [patent_doc_number] => 04917479 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-17 [patent_title] => 'Adjustable counterweighted temple pieces for eyeglasses' [patent_app_type] => 1 [patent_app_number] => 7/252116 [patent_app_country] => US [patent_app_date] => 1988-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 10 [patent_no_of_words] => 2422 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 222 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/917/04917479.pdf [firstpage_image] =>[orig_patent_app_number] => 252116 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/252116
Adjustable counterweighted temple pieces for eyeglasses Oct 2, 1988 Issued
07/251396 ZOOM LENS SYSTEM Sep 29, 1988 Abandoned
Array ( [id] => 2612067 [patent_doc_number] => 04955706 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-09-11 [patent_title] => 'Composite polymeric spectacle parts' [patent_app_type] => 1 [patent_app_number] => 7/252265 [patent_app_country] => US [patent_app_date] => 1988-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2947 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/955/04955706.pdf [firstpage_image] =>[orig_patent_app_number] => 252265 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/252265
Composite polymeric spectacle parts Sep 29, 1988 Issued
Array ( [id] => 2504542 [patent_doc_number] => 04854693 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-08 [patent_title] => 'Ophthalmic disease detection apparatus' [patent_app_type] => 1 [patent_app_number] => 7/253346 [patent_app_country] => US [patent_app_date] => 1988-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2113 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 280 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/854/04854693.pdf [firstpage_image] =>[orig_patent_app_number] => 253346 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/253346
Ophthalmic disease detection apparatus Sep 28, 1988 Issued
Array ( [id] => 2675922 [patent_doc_number] => 05048944 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-09-17 [patent_title] => 'Eyeglasses with removable lens assembly' [patent_app_type] => 1 [patent_app_number] => 7/246987 [patent_app_country] => US [patent_app_date] => 1988-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 4448 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/048/05048944.pdf [firstpage_image] =>[orig_patent_app_number] => 246987 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/246987
Eyeglasses with removable lens assembly Sep 19, 1988 Issued
07/245417 APPARATUS AND A METHOD FOR FINDING BLIND SPOTS IN THE EYE OF A VOLUNTEER PATIENT Sep 15, 1988 Abandoned
Array ( [id] => 2760335 [patent_doc_number] => 04984876 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-15 [patent_title] => 'Zoom lens system' [patent_app_type] => 1 [patent_app_number] => 7/244796 [patent_app_country] => US [patent_app_date] => 1988-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 43 [patent_figures_cnt] => 316 [patent_no_of_words] => 22137 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/984/04984876.pdf [firstpage_image] =>[orig_patent_app_number] => 244796 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/244796
Zoom lens system Sep 14, 1988 Issued
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