Inventor
Douglas Malcolm Wiggin
Inventor
Burnaby, CA
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus16%
G02CSpectacles16%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein16%
A61FFilters implantable into blood vessels9%
B29DProducing particular articles from plastics or from substances in a plastic state9%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%
B60JWindows, windscreens, non-fixed roofs, doors, or similar devices for vehicles9%
E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates9%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
11,079,617Optical filter comprising a variable transmittance layer202110,663,771Optical filter with light source202010,401,654Optical filter comprising a variable transmittance layer201910,310,300Optical filter with light source20199,921,421'Optical filter comprising a variable transmittance layer'20189,910,301'Switchable optical filter apparatus with light'20189,588,358'Optical filter comprising a variable transmittance layer'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2020Patents assigned to SWITCH MAT INC (6)· patent assignee history
2017–2021Based in Burnaby, CA· patent location history
2021Patents assigned to SOLATIA CANADA INC (1)· patent assignee history
2021Patents assigned to SOLUTIA CANADA INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SWITCH MAT INC | 6 | 2017–2020 |
| SOLATIA CANADA INC | 1 | 2021 |
| SOLUTIA CANADA INC | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Burnaby, CA | 7 | 2017–2021 |