Alexey Lef has been granted 11 US patents while listed as an inventor at Sciquest . The first was granted in 2005 and the most recent in May 2025. Alexey Lef ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Alexey Lef in Chennai, NC, IN.
Patents per Year Patents granted per year, 2005 to 2025 Bar chart with a peak of 2 patents in 2011. peak 2 2005: 1 patents 2005 2011: 2 patents 2011 2012: 2 patents 2012 2013: 1 patents 2013 2014: 1 patents 2014 2015: 1 patents 2015 2016: 1 patents 2016 2023: 1 patents 2023 2025: 1 patents 2025
Issued Patents All Time
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Showing 1–11 of 11 patents
Patent # Title Co-Inventors Date
12299732 User-specific rule-based database querying Charles A. Ballaro 2025-05-13
11663647 User-specific rule-based database querying Charles A. Ballaro 2023-05-30
9245289 Taxonomy and data structure for an electronic procurement system Charles A. Ballaro , David W. Frink 2016-01-26
8930244 Method, medium, and system for processing requisitions Charles A. Ballaro , Ronald Angerer , Philip J. Sabino , David W. Frink , Lisa Fleck 2015-01-06
8694429 Identifying and resolving discrepancies between purchase documents and invoices Charles A. Ballaro 2014-04-08
8359245 Taxonomy and data structure for an electronic procurement system Charles A. Ballaro , David W. Frink 2013-01-22
8285573 Prioritizing orders/receipt of items between users Charles A. Ballaro , Natalia Potochniak , Ronald Angerer 2012-10-09
8112317 Providing substitute items when ordered item is unavailable Charles A. Ballaro , Natalia Potochniak , Ronald Angerer 2012-02-07
8069096 Multi-constituent attribution of a vendor's product catalog Charles A. Ballaro , David W. Frink 2011-11-29
8065202 Form management in an electronic procurement system Charles A. Ballaro , Blake E. Ellavsky , Mark Pugh , David W. Frink 2011-11-22
6944613 Method and system for creating a database and searching the database for allowing multiple customized views Ronald Angerer 2005-09-13