Xu Mei

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Array ( [id] => 20325294 [patent_doc_number] => 20250337382 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-30 [patent_title] => Howl detection in an audio system [patent_app_type] => utility [patent_app_number] => 18/741861 [patent_app_country] => US [patent_app_date] => 2024-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1764 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18741861 [rel_patent_id] =>[rel_patent_doc_number] =>)

Array ( [id] => 20612181 [patent_doc_number] => 12587795 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-24 [patent_title] => Electromagnetic microphone [patent_app_type] => utility [patent_app_number] => 18/742874 [patent_app_country] => US [patent_app_date] => 2024-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 22 [patent_no_of_words] => 0 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18742874 [rel_patent_id] =>[rel_patent_doc_number] =>)

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