Search

Richard K. Chang

Examiner (ID: 10963, Phone: (571)270-3368 , Office: P/2464 )

Most Active Art Unit
2464
Art Unit(s)
2464, 2616, 2663
Total Applications
302
Issued Applications
252
Pending Applications
10
Abandoned Applications
46

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 749775 [patent_doc_number] => 07027429 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-04-11 [patent_title] => 'Method and apparatus for time and frequency synchronization of OFDM communication systems' [patent_app_type] => utility [patent_app_number] => 09/884581 [patent_app_country] => US [patent_app_date] => 2001-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 4565 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 11 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/027/07027429.pdf [firstpage_image] =>[orig_patent_app_number] => 09884581 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/884581
Method and apparatus for time and frequency synchronization of OFDM communication systems Jun 18, 2001 Issued
Array ( [id] => 632095 [patent_doc_number] => 07133423 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2006-11-07 [patent_title] => 'Maintaining synchronization between frame control word and data frame pairs in a home network' [patent_app_type] => utility [patent_app_number] => 09/884660 [patent_app_country] => US [patent_app_date] => 2001-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1872 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/133/07133423.pdf [firstpage_image] =>[orig_patent_app_number] => 09884660 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/884660
Maintaining synchronization between frame control word and data frame pairs in a home network Jun 18, 2001 Issued
Array ( [id] => 959509 [patent_doc_number] => 06954457 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-10-11 [patent_title] => 'Conditionally nonblocking switch of the circular expander type' [patent_app_type] => utility [patent_app_number] => 09/882139 [patent_app_country] => US [patent_app_date] => 2001-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 97 [patent_figures_cnt] => 188 [patent_no_of_words] => 51079 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 19 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/954/06954457.pdf [firstpage_image] =>[orig_patent_app_number] => 09882139 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/882139
Conditionally nonblocking switch of the circular expander type Jun 14, 2001 Issued
Array ( [id] => 6456468 [patent_doc_number] => 20020150090 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-10-17 [patent_title] => 'Switching system for providing an always on/dynamic ISDN service' [patent_app_type] => new [patent_app_number] => 09/835561 [patent_app_country] => US [patent_app_date] => 2001-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2495 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0150/20020150090.pdf [firstpage_image] =>[orig_patent_app_number] => 09835561 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/835561
Switching system for providing an always on/dynamic ISDN service Apr 16, 2001 Abandoned
Array ( [id] => 6456343 [patent_doc_number] => 20020150076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-10-17 [patent_title] => 'Method for playing real time game between cellular phones' [patent_app_type] => new [patent_app_number] => 09/835362 [patent_app_country] => US [patent_app_date] => 2001-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1103 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0150/20020150076.pdf [firstpage_image] =>[orig_patent_app_number] => 09835362 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/835362
Method for playing real time game between cellular phones Apr 16, 2001 Abandoned
Array ( [id] => 7080042 [patent_doc_number] => 20010042137 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2001-11-15 [patent_title] => 'Communications network system using gateway' [patent_app_type] => new [patent_app_number] => 09/834644 [patent_app_country] => US [patent_app_date] => 2001-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6385 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0042/20010042137.pdf [firstpage_image] =>[orig_patent_app_number] => 09834644 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/834644
Communications network system using gateway Apr 15, 2001 Issued
Array ( [id] => 6094488 [patent_doc_number] => 20020051436 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-05-02 [patent_title] => 'Use of wide element spacing to improve the flexibility of a circular basestation antenna array in a space division/multiple access synchronous CDMA communication system' [patent_app_type] => new [patent_app_number] => 09/834667 [patent_app_country] => US [patent_app_date] => 2001-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 10430 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0051/20020051436.pdf [firstpage_image] =>[orig_patent_app_number] => 09834667 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/834667
Use of wide element spacing to improve the flexibility of a circular base station antenna array in a space division/multiple access synchronous CDMA communication system Apr 12, 2001 Issued
Array ( [id] => 932052 [patent_doc_number] => 06980563 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-12-27 [patent_title] => 'Method and system for fast ethernet serial port multiplexing to reduce I/O pin count' [patent_app_type] => utility [patent_app_number] => 09/834591 [patent_app_country] => US [patent_app_date] => 2001-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2293 [patent_no_of_claims] => 2 [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/06/980/06980563.pdf [firstpage_image] =>[orig_patent_app_number] => 09834591 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/834591
Method and system for fast ethernet serial port multiplexing to reduce I/O pin count Apr 12, 2001 Issued
Array ( [id] => 5872866 [patent_doc_number] => 20020048261 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-04-25 [patent_title] => 'Method and apparatus for automatic delay compensation in space diversity radio transmissions' [patent_app_type] => new [patent_app_number] => 09/833666 [patent_app_country] => US [patent_app_date] => 2001-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2240 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0048/20020048261.pdf [firstpage_image] =>[orig_patent_app_number] => 09833666 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/833666
Method and apparatus for automatic delay compensation in space diversity radio transmissions Apr 12, 2001 Issued
Array ( [id] => 719282 [patent_doc_number] => 07054292 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-05-30 [patent_title] => 'Hybrid synchronous space/code multiple access system using an adaptive antenna system' [patent_app_type] => utility [patent_app_number] => 09/833720 [patent_app_country] => US [patent_app_date] => 2001-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 11 [patent_no_of_words] => 9285 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/054/07054292.pdf [firstpage_image] =>[orig_patent_app_number] => 09833720 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/833720
Hybrid synchronous space/code multiple access system using an adaptive antenna system Apr 11, 2001 Issued
Array ( [id] => 784669 [patent_doc_number] => 06992995 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-01-31 [patent_title] => 'Telecommunication enhanced mobile IP architecture for intra-domain mobility' [patent_app_type] => utility [patent_app_number] => 09/834237 [patent_app_country] => US [patent_app_date] => 2001-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 6946 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/992/06992995.pdf [firstpage_image] =>[orig_patent_app_number] => 09834237 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/834237
Telecommunication enhanced mobile IP architecture for intra-domain mobility Apr 11, 2001 Issued
Array ( [id] => 784667 [patent_doc_number] => 06992994 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-01-31 [patent_title] => 'Methods and systems for a generalized mobility solution using a dynamic tunneling agent' [patent_app_type] => utility [patent_app_number] => 09/834234 [patent_app_country] => US [patent_app_date] => 2001-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 6838 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 13 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/992/06992994.pdf [firstpage_image] =>[orig_patent_app_number] => 09834234 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/834234
Methods and systems for a generalized mobility solution using a dynamic tunneling agent Apr 11, 2001 Issued
Array ( [id] => 5813822 [patent_doc_number] => 20020039351 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-04-04 [patent_title] => 'Bandwidth sharing using emulated weighted fair queuing' [patent_app_type] => new [patent_app_number] => 09/808652 [patent_app_country] => US [patent_app_date] => 2001-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3018 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0039/20020039351.pdf [firstpage_image] =>[orig_patent_app_number] => 09808652 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/808652
Bandwidth sharing using emulated weighted fair queuing Mar 14, 2001 Issued
Array ( [id] => 746093 [patent_doc_number] => 07031347 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-04-18 [patent_title] => 'Data communication link' [patent_app_type] => utility [patent_app_number] => 09/808664 [patent_app_country] => US [patent_app_date] => 2001-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2469 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/031/07031347.pdf [firstpage_image] =>[orig_patent_app_number] => 09808664 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/808664
Data communication link Mar 14, 2001 Issued
Array ( [id] => 6257339 [patent_doc_number] => 20020186665 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-12-12 [patent_title] => 'Efficient path learning in network' [patent_app_type] => new [patent_app_number] => 09/808635 [patent_app_country] => US [patent_app_date] => 2001-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 10587 [patent_no_of_claims] => 40 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 87 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0186/20020186665.pdf [firstpage_image] =>[orig_patent_app_number] => 09808635 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/808635
Efficient path learning in network Mar 13, 2001 Abandoned
Array ( [id] => 7610405 [patent_doc_number] => 06842454 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-01-11 [patent_title] => 'Method and system for device addressing on a computer network' [patent_app_type] => utility [patent_app_number] => 09/808547 [patent_app_country] => US [patent_app_date] => 2001-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 6939 [patent_no_of_claims] => 40 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/842/06842454.pdf [firstpage_image] =>[orig_patent_app_number] => 09808547 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/808547
Method and system for device addressing on a computer network Mar 13, 2001 Issued
Array ( [id] => 689153 [patent_doc_number] => 07079491 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-07-18 [patent_title] => 'Method and node apparatus for filtering ICMP data frame' [patent_app_type] => utility [patent_app_number] => 09/805607 [patent_app_country] => US [patent_app_date] => 2001-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 5453 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/079/07079491.pdf [firstpage_image] =>[orig_patent_app_number] => 09805607 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/805607
Method and node apparatus for filtering ICMP data frame Mar 12, 2001 Issued
Array ( [id] => 7064274 [patent_doc_number] => 20010043560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2001-11-22 [patent_title] => 'Method and system for restoring coincident line and facility failures' [patent_app_type] => new [patent_app_number] => 09/804365 [patent_app_country] => US [patent_app_date] => 2001-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7845 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0043/20010043560.pdf [firstpage_image] =>[orig_patent_app_number] => 09804365 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/804365
Method and system for restoring coincident line and facility failures Mar 11, 2001 Abandoned
Array ( [id] => 959495 [patent_doc_number] => 06954443 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-10-11 [patent_title] => 'Short range RF network with roaming terminals' [patent_app_type] => utility [patent_app_number] => 09/803534 [patent_app_country] => US [patent_app_date] => 2001-03-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5303 [patent_no_of_claims] => 48 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/954/06954443.pdf [firstpage_image] =>[orig_patent_app_number] => 09803534 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/803534
Short range RF network with roaming terminals Mar 8, 2001 Issued
Array ( [id] => 6014214 [patent_doc_number] => 20020101857 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-08-01 [patent_title] => 'Achieving PPP mobility via the mobile IP infrastructure' [patent_app_type] => new [patent_app_number] => 09/773364 [patent_app_country] => US [patent_app_date] => 2001-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4447 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0101/20020101857.pdf [firstpage_image] =>[orig_patent_app_number] => 09773364 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/773364
Achieving PPP mobility via the mobile IP infrastructure Jan 30, 2001 Issued
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