Near infrared optical interference filters with improved transmission
US-2025389880-A1 · Dec 25, 2025 · US
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Sprague Robert patents
Sprague Robert is listed as an inventor on 28 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Sprague Robert |
| Total patents | 28 |
| First publication | Mar 5, 2015 |
| Latest publication | Dec 25, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Near infrared optical interference filters with improved transmission
US-12422605-B2 · Sep 23, 2025 · US
Method of fabricating anisotropic optical interference filter
US-12000033-B2 · Jun 4, 2024 · US
Reflective color correction for phosphor illumination systems
US-11474422-B2 · Oct 18, 2022 · US
Near infrared optical interference filters with improved transmission
US-2022299688-A1 · Sep 22, 2022 · US
Method of fabricating anisotropic optical interference filter
US-2022275497-A1 · Sep 1, 2022 · US
Near infrared optical interference filters with improved transmission
US-11372144-B2 · Jun 28, 2022 · US
Method of fabricating anisotropic optical interference filter
US-11365471-B2 · Jun 21, 2022 · US
Reflective color correction for phosphor illumination systems
US-2021191246-A1 · Jun 24, 2021 · US
Enhancement of output of optically pumped phosphor by use of surface nanostructures
US-10871644-B2 · Dec 22, 2020 · US
Recent patents
Latest publications not already listed above.
Method of fabricating anisotropic optical interference filter
US-2020116911-A1 · Apr 16, 2020 · US
Enhancement of output of optically pumped phosphor by use of surface nanostructures
US-2019377173-A1 · Dec 12, 2019 · US
Method of fabricating anisotropic optical interference filter
US-10502880-B2 · Dec 10, 2019 · US
Enhancement of output of optically pumped phosphor by use of surface nanostructures
US-10437042-B2 · Oct 8, 2019 · US
Near infrared optical interference filters with improved transmission
US-2019212484-A1 · Jul 11, 2019 · US
Near infrared optical interference filters with improved transmission
US-9989684-B2 · Jun 5, 2018 · US
Automated defect detection and mapping for optical filters
US-9927369-B2 · Mar 27, 2018 · US
Method of fabricating anisotropic optical interference filter
US-2018052265-A1 · Feb 22, 2018 · US
Method of fabricating anisotropic optical interference filter
US-9804310-B2 · Oct 31, 2017 · US
Enhancement of output of optically pumped phosphor by use of surface nanostructures
US-2017235127-A1 · Aug 17, 2017 · US
Automated defect detection and mapping for optical filters
US-2016356724-A1 · Dec 8, 2016 · US
Driving methods and waveforms for electrophoretic displays
US-9460666-B2 · Oct 4, 2016 · US
Additive for improving optical performance of an electrophoretic display
US-9423666-B2 · Aug 23, 2016 · US
Method of fabricating anisotropic optical interference filter
US-2016237547-A1 · Aug 18, 2016 · US
Near infrared optical interference filters with improved transmission
US-2016238759-A1 · Aug 18, 2016 · US
Near infrared optical interference filters with improved transmission
US-2016216419-A1 · Jul 28, 2016 · US
Driving methods and circuit for bi-stable displays
US-9373289-B2 · Jun 21, 2016 · US
Additive for improving optical performance of an electrophoretic display
US-2015062690-A1 · Mar 5, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Materion Corp | 24 |
| E Ink California Llc | 4 |
| Sprague Robert | 2 |
| Ho Andrew | 1 |
| Chen Yajuan | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G02B5/285 | 14 |
| C23C14/3414 | 8 |
| G02B5/281 | 8 |
| C23C14/0652 | 8 |
| C23C14/10 | 8 |