Inventor
Ralph Hopkins
Inventor
Chestnut Hill, MA, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Cprimary
G01CMeasuring distances, levels or bearings17%
A61BDiagnosis8%
A61FFilters implantable into blood vessels8%
B25JManipulators8%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%
B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems8%
C04BLime, magnesia8%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure8%
G01NInvestigating or analysing materials by determining their chemical or physical properties8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
PatentTitleYear
8,529,724'Anodic bonding of silicon carbide to glass'20137,402,425'Stress-based electrostatic monitoring of chemical reactions and binding'20086,615,681'Hybrid wafer gyroscope'20035,952,574'Trenches to reduce charging effects and to control out-of-plane sensitivities in tuning fork gyroscopes and other sensors'19995,656,785'Micromechanical contact load force sensor for sensing magnitude and distribution of loads and tool employing micromechanical contact load force sensor'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2013Patents assigned to DRAPER LAB CHARLES S (5)· patent assignee history
1997–1999Based in Brookline, MA, US· patent location history
2003–2013Based in Chestnut Hill, MA, US· patent location history
2013Patents assigned to BORENSTEIN JEFFREY (1)· patent assignee history
2013Patents assigned to HOPKINS RALPH (1)· patent assignee history
2013Patents assigned to TUDRYN CARISSA (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DRAPER LAB CHARLES S | 5 | 1997–2013 |
| BORENSTEIN JEFFREY | 1 | 2013 |
| HOPKINS RALPHself | 1 | 2013 |
| TUDRYN CARISSA | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Chestnut Hill, Massachusetts, US | 3 | 2003–2013 |
| Brookline, Massachusetts, US | 2 | 1997–1999 |