Inventor · Calgary, AB, CA

David William Keith

35Patents
8h-index
24Co-inventors
75Inventor score

Filing activity: Sep 16, 1988 → Apr 20, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US6874935B2 Double gusseted tamper evident slider bag Performing Operations; Transporting 30 Expired
US9095813B2 Carbon dioxide capture method and facility Emerging Cross-Sectional Technologies 23 Active
US8119091B2 Carbon dioxide capture Emerging Cross-Sectional Technologies 20 Active
US8574354B2 Reducing the carbon emissions intensity of a fuel Emerging Cross-Sectional Technologies 15 Active
US9637393B2 Recovering a caustic solution via calcium carbonate crystal aggregates Emerging Cross-Sectional Technologies 13 Active
US10557338B2 Reducing the carbon emissions intensity of a fuel Emerging Cross-Sectional Technologies 12 Active
US7097358B2 Extended lip wicket slider deli bag Performing Operations; Transporting 12 Expired
US8405414B2 Wafer testing systems and associated methods of use and manufacture Physics 9 Active
US4886964A Matter wave optical systems in which an atomic beam intersects a diffraction grating at a grazing incidence Physics 8 Expired
US8871008B2 Target gas capture Performing Operations; Transporting 8 Active
US5873969A Method and apparatus for opening a zipper after it has been spot sealed Emerging Cross-Sectional Technologies 7 Expired
US9322296B2 Distributed compressed air energy storage system and method Emerging Cross-Sectional Technologies 7 Active
US8728428B1 Recovering a caustic solution via calcium carbonate crystal aggregates Emerging Cross-Sectional Technologies 7 Active
US10084783B2 Selectively restricting communications from third party applications/devices to electronic devices Physics 7 Active
US9159105B2 Reducing the carbon emissions intensity of a fuel Emerging Cross-Sectional Technologies 7 Active
US9894735B2 Systems and methods of determining a type and feature set of a light source, and the control thereof Emerging Cross-Sectional Technologies 5 Active
US9660948B2 Rule-based rate limiting Electricity 4 Active
US9975100B2 Recovering a caustic solution via calcium carbonate crystal aggregates Emerging Cross-Sectional Technologies 4 Active
US11014043B2 Capturing carbon dioxide Emerging Cross-Sectional Technologies 3 Active
US10397228B2 Selectively restricting communications from third party applications/devices to electronic devices Physics 3 Active
US11504667B2 Carbon dioxide capture method and facility Emerging Cross-Sectional Technologies 3 Active
US8092088B2 Extended lip wicket slider deli bag Performing Operations; Transporting 3 Active
US8872533B2 Wafer testing system and associated methods of use and manufacture Physics 3 Active
US10421039B2 Capturing carbon dioxide Emerging Cross-Sectional Technologies 3 Active
US10519041B2 Recovering a caustic solution via calcium carbonate crystal aggregates Emerging Cross-Sectional Technologies 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.