Inventor
Robert W. Chin
Inventor
Vasteras, SE
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling18%
B01DSeparation12%
F16DCouplings for transmitting rotation12%
H02KDynamo-electric machines12%
Y10TTechnical subjects covered by former us classification12%
B64CAeroplanes6%
F16KValves6%
G01VGeophysics6%
G08BSignalling systems, e.g. personal calling systems6%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters6%
PatentTitleYear
10,840,833High efficiency commutation circuit20209,590,458'Electrical machine with circumferentially skewed rotor poles or stator coils'20179,464,516'Water injection systems and methods'20169,234,413'Water injection systems and methods'20168,794,320'Water injection systems and methods'20148,680,740'Stator with intermediate teeth'20145,176,838'Sand pan'19934,953,144'Third-party detection around pipelines'19904,535,957'Safety device for venting aircraft tires'19854,276,969'Method and means for fastening friction wear pads'19814,076,106'Snap fasteners for brake disk wear plates'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1985Patents assigned to GOODYEAR AEROSPACE CORP (3)· patent assignee history
1978–1985Based in Akron, OH, US· patent location history
1990–2016Patents assigned to SHELL OIL CO (4)· patent assignee history
1990Based in Houston, TX, US· patent location history
1993Based in Bakersfield, CA, US· patent location history
2014–2016Patents assigned to AYIRALA SUBHASH CHANDRA BOSE (3)· patent assignee history
2014–2016Patents assigned to CHIN ROBERT WING-YU (3)· patent assignee history
2014–2017Patents assigned to ABB RESEARCH LTD (2)· patent assignee history
2014–2020Based in Vasteras, SE· patent location history
2014–2016Based in Katy, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHELL OIL CO | 4 | 1990–2016 |
| AYIRALA SUBHASH CHANDRA BOSE | 3 | 2014–2016 |
| CHIN ROBERT WING-YUself | 3 | 2014–2016 |
| GOODYEAR AEROSPACE CORP | 3 | 1978–1985 |
| ABB RESEARCH LTD | 2 | 2014–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Vasteras, SE | 3 | 2014–2020 |
| Katy, Texas, US | 3 | 2014–2016 |
| Akron, OH, US | 3 | 1978–1985 |
| Bakersfield, California, US | 1 | 1993 |
| Houston, Texas, US | 1 | 1990 |