Inventor
Richard Michael Roffers
Inventor
Menomonee Falls, WI, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps48%
Y10TTechnical subjects covered by former us classification22%
H01RElectrically-conductive connections9%
H05GX-ray technique9%
A61BDiagnosis4%
F16JPistons4%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure4%
PatentTitleYear
10,605,687Spark gap device and method of measurement of X-ray tube vacuum pressure20209,882,301'Current restrictive spring-loaded electrical connection device'20189,865,423'X-ray tube cathode with shaped emitter'20189,647,367'Current restrictive spring-loaded electrical connection device'20179,271,689'Apparatus for wide coverage computed tomography and method of constructing same'20169,093,247'Method and apparatus of differential pumping in an X-ray tube'20158,509,385'X-ray tube with improved vacuum processing'20138,126,115'Method and apparatus of differential pumping in an x-ray tube'20127,881,436'Method and apparatus of differential pumping in an x-ray tube'20117,783,012'Apparatus for a surface graded x-ray tube insulator and method of assembling same'20107,702,077'Apparatus for a compact HV insulator for x-ray and vacuum tube and method of assembling same'20107,693,264'Antechamber control reducing leak through ferrofluid seals'20107,519,158'Pumping schemes for X-ray tubes with ferrofluid seals'20097,020,244'Method and design for electrical stress mitigation in high voltage insulators in X-ray tubes'20066,775,354'Method and apparatus for reducing high voltage breakdown events in X-ray tubes'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2010Based in Whitefish Bay, WI, US· patent location history
2006–2020Patents assigned to GEN ELECTRIC (14)· patent assignee history
2010–2016Based in Menomonee Falls, WI, US· patent location history
2012–2016Patents assigned to ROFFERS RICHARD MICHAEL (4)· patent assignee history
2012–2016Patents assigned to ROGERS CAREY SHAWN (3)· patent assignee history
2013Patents assigned to BIEHR ERIC BRUCE (1)· patent assignee history
2016Patents assigned to DAYTON KENWOOD (1)· patent assignee history
2017–2020Based in Milwaukee, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN ELECTRIC | 14 | 2006–2020 |
| ROFFERS RICHARD MICHAELself | 4 | 2012–2016 |
| ROGERS CAREY SHAWN | 3 | 2012–2016 |
| BIEHR ERIC BRUCE | 1 | 2013 |
| DAYTON KENWOOD | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Menomonee Falls, WI, US | 7 | 2010–2016 |
| Milwaukee, WI, US | 4 | 2017–2020 |
| Whitefish Bay, WI, US | 4 | 2004–2010 |