Multi-layered electret-containing filtration media
US-12420221-B2 · Sep 23, 2025 · US
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Healey David T patents
Healey David T is listed as an inventor on 30 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Healey David T |
| Total patents | 30 |
| First publication | Mar 24, 2015 |
| Latest publication | Sep 23, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Filter media including a waved filtration layer having a gradient
US-2025099888-A1 · Mar 27, 2025 · US
Filter media with irregular structure and/or reversibly stretchable layers
US-2024424434-A1 · Dec 26, 2024 · US
Filter media with irregular structure and/or reversibly stretchable layers
US-12053728-B2 · Aug 6, 2024 · US
Filter media with irregular structure
US-12036496-B2 · Jul 16, 2024 · US
High performance filter media
US-2024207764-A1 · Jun 27, 2024 · US
Articles comprising filter media with irregular structure and/or reversibly stretchable layers
US-2023415081-A1 · Dec 28, 2023 · US
Filter media with irregular structure
US-2023025717-A1 · Jan 26, 2023 · US
Filter media with irregular structure and/or reversibly stretchable layers
US-2023026576-A1 · Jan 26, 2023 · US
Filter media with irregular structure
US-11433332-B2 · Sep 6, 2022 · US
Recent patents
Latest publications not already listed above.
Filter media with irregular structure and/or reversibly stretchable layers
US-11420143-B2 · Aug 23, 2022 · US
Filter media comprising adsorptive particles
US-2021370218-A1 · Dec 2, 2021 · US
Filter media comprising a non-wetlaid backer
US-2021187421-A1 · Jun 24, 2021 · US
Filter media including a waved filtration layer
US-2020391148-A1 · Dec 17, 2020 · US
Filter media with irregular structure and/or reversibly stretchable layers
US-2020330913-A1 · Oct 22, 2020 · US
Waved filter media and elements
US-10758858-B2 · Sep 1, 2020 · US
Filter media with irregular structure
US-2020139281-A1 · May 7, 2020 · US
Filter media including a waved filtration layer
US-10561972-B2 · Feb 18, 2020 · US
Filter media including a waved filtration layer
US-10449474-B2 · Oct 22, 2019 · US
Filter media including a multi-phase pre-filter
US-2018361287-A1 · Dec 20, 2018 · US
Filter media including a waved filtration layer having a gradient
US-2018272258-A1 · Sep 27, 2018 · US
Waved filter media and elements
US-2018015405-A1 · Jan 18, 2018 · US
Multi-layered electret-containing filtration media
US-2018001247-A1 · Jan 4, 2018 · US
Filter media including a waved filtration layer
US-2017312673-A1 · Nov 2, 2017 · US
Waved filter media and elements
US-9718020-B2 · Aug 1, 2017 · US
Waved filter media and elements
US-9687771-B2 · Jun 27, 2017 · US
Filter media including a waved filtration layer
US-2017080368-A1 · Mar 23, 2017 · US
Resin impregnated fiber webs
US-2016136553-A1 · May 19, 2016 · US
Waved filter media and elements
US-2015121823-A1 · May 7, 2015 · US
Meltblown filter medium, related applications and uses
US-8986432-B2 · Mar 24, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Hollingsworth & Vose Co | 30 |
| Hollingworth & Vose Company | 1 |
| Wertz John A | 1 |
| Healey David T | 1 |
| Freeman William S | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B01D39/1623 | 22 |
| B01D2239/0622 | 20 |
| B01D2239/0654 | 18 |
| B01D2239/0435 | 15 |
| B01D2239/0631 | 14 |