Inventor
Ching-Fai Cho
Inventor
Tujunga, CA, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Pprimary
H01PWaveguides35%
H01QAntennas, i.e. radio aerials18%
H05KPrinted circuits18%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1012%
G01SRadio direction-finding6%
Y02ATechnologies for adaptation to climate change6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
8,008,997'Printed circuit board filter having rows of vias defining a quasi cavity that is below a cutoff frequency'20115,930,665'Wide frequency band transition between via RF transmission lines and planar transmission lines'19995,757,252'Wide frequency band transition between via RF transmission lines and planar transmission lines'19985,491,489'ASR system for microburst detection'19965,389,901'Microwave amplitude equalizer circuit'19954,814,780'Variable directional coupler'19894,477,816'Corrugated antenna feed horn with means for radiation pattern control'19844,356,496'Loop-coupler commutating feed for scanning a circular array antenna'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982Patents assigned to CHO CHING FAI (1)· patent assignee history
1982Patents assigned to WOLFSON RONALD I (1)· patent assignee history
1982Based in Sylmar, CA, US· patent location history
1984–1999Patents assigned to ITT (5)· patent assignee history
1984–1999Based in Tujunga, CA, US· patent location history
1989Patents assigned to ITT GILFILLAN (1)· patent assignee history
2011Patents assigned to ITT MFG ENTERPRISES INC (1)· patent assignee history
2011Based in La Canada, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ITT | 5 | 1984–1999 |
| CHO CHING FAIself | 1 | 1982 |
| ITT GILFILLAN | 1 | 1989 |
| ITT MFG ENTERPRISES INC | 1 | 2011 |
| WOLFSON RONALD I | 1 | 1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tujunga, California, US | 6 | 1984–1999 |
| La Canada, California, US | 1 | 2011 |
| Sylmar, California, US | 1 | 1982 |