Inventor
Joshua A. Ritchey
Inventor
Melrose, MA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein21%
H01BCables16%
Y10TTechnical subjects covered by former us classification16%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds11%
C09DCoating compositions, e.g. paints, varnishes or lacquers11%
G09GArrangements or circuits for control of indicating devices using static means to present variable information11%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
C08JWorking-up5%
C08LCompositions of macromolecular compounds5%
PatentTitleYear
10,796,649Nano-particle based variable transmission devices202010,538,659UV graft on microfluidic devices202010,233,339Electrophoretic medium comprising a mixture of charge control agents201910,040,954Electrophoretic medium comprising a mixture of charge control agents20189,953,588Nano-particle based variable transmission devices20188,679,621'Materials and methods for autonomous restoration of electrical conductivity'2014Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2014Patents assigned to AMINE KHALIL (1)· patent assignee history
2014Patents assigned to BAGINSKA MARTA B (1)· patent assignee history
2014Based in Cambridge, MA, US· patent location history
2018–2020Patents assigned to E INK CORP (4)· patent assignee history
2018–2019Patents assigned to E INK CALIFORNIA LLC (2)· patent assignee history
2018–2020Based in Melrose, MA, US· patent location history
2020Patents assigned to BIO RAD LABORATORIES (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| E INK CORP | 4 | 2018–2020 |
| E INK CALIFORNIA LLC | 2 | 2018–2019 |
| AMINE KHALIL | 1 | 2014 |
| BAGINSKA MARTA B | 1 | 2014 |
| BIO RAD LABORATORIES | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Melrose, Massachusetts, US | 5 | 2018–2020 |
| Cambridge, Massachusetts, US | 1 | 2014 |