Event masking
US-12400628-B2 · Aug 26, 2025 · US
This page is not indexed by search engines while we improve data quality.
Duffy David patents
Duffy David is listed as an inventor on 33 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Duffy David |
| Total patents | 33 |
| First publication | Mar 3, 2022 |
| Latest publication | Aug 26, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Writing instruments with integrated data handling and haptic feedback subsystems
US-12399579-B2 · Aug 26, 2025 · US
Writing instrument and method
US-12299777-B2 · May 13, 2025 · US
Handwriting text summarization
US-12050878-B2 · Jul 30, 2024 · US
Passive variable friction pen
US-12030339-B2 · Jul 9, 2024 · US
Self-healing seal for a writing instrument
US-12005730-B2 · Jun 11, 2024 · US
Rendering messages in response to user-object interaction
US-11991305-B2 · May 21, 2024 · US
On-skin circuit assistance
US-2024104253-A1 · Mar 28, 2024 · US
Writing instruments, methods and systems comprising the same
US-2024069652-A1 · Feb 29, 2024 · US
Blue light reduction
US-11885970-B2 · Jan 30, 2024 · US
Recent patents
Latest publications not already listed above.
Razor component including a pressure-responsive phase-change component
US-11872710-B2 · Jan 16, 2024 · US
Generating visual feedback
US-11869130-B2 · Jan 9, 2024 · US
Methods and systems for writing skill development
US-11823585-B2 · Nov 21, 2023 · US
Passive variable friction pen
US-2023234392-A1 · Jul 27, 2023 · US
Writing instrument and method
US-2023230296-A1 · Jul 20, 2023 · US
Generating visual feedback
US-2023215066-A1 · Jul 6, 2023 · US
Self-healing seal for a writing instrument
US-2023211627-A1 · Jul 6, 2023 · US
Handwriting feedback
US-11675495-B2 · Jun 13, 2023 · US
Generating visual feedback
US-11651537-B2 · May 16, 2023 · US
Methods and systems for vehicle-assisted feature capture
US-2023120080-A1 · Apr 20, 2023 · US
Methods and systems for personalized coloring template
US-2023113158-A1 · Apr 13, 2023 · US
Methods and systems for administering cognitive state cues
US-2023105053-A1 · Apr 6, 2023 · US
Razor component including a pressure-responsive phase-change component
US-2023039442-A1 · Feb 9, 2023 · US
Cardiopulmonary resuscitation device, control method and computer program
US-11534366-B2 · Dec 27, 2022 · US
Blue light reduction
US-2022317456-A1 · Oct 6, 2022 · US
Methods and systems for writing skill development
US-2022309945-A1 · Sep 29, 2022 · US
Event masking
US-2022301535-A1 · Sep 22, 2022 · US
Handwriting feedback
US-2022291827-A1 · Sep 15, 2022 · US
Message delivery
US-2022279312-A1 · Sep 1, 2022 · US
Handwriting text summarization
US-2022269869-A1 · Aug 25, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| SOCIéTé BIC | 24 |
| Nokia Technologies Oy | 7 |
| Koninklijke Philips Nv | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G06F3/03545 | 10 |
| G06F3/04883 | 9 |
| G06F40/20 | 6 |
| G06V30/1423 | 6 |
| G06T2200/24 | 6 |