Inventor

Joseph Ip

Inventor

Kanata, CA

Overview

10→

Patents

1985–2000

Patent span

Physics

Primary field (CPC G)

Patents· 10 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Bprimary

G02BOptical elements, systems or apparatus44%

H04BTransmission17%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light11%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light11%

H04JMultiplex communication11%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

PatentTitleYear

6,141,130'Spectral equalizer for multiplexed channels'2000 6,040,932'Method and circuit for demultiplexing an optical signal'2000 5,909,295'Hybrid bi-directional wavelength division multiplexing device'1999 5,798,859'Method and device for wavelength locking'1998 5,748,363'Wavelength dependent crossover system for bi-directional transmission'1998 5,612,824'Narrow band filter and method of making same'1997 5,608,825'Multi-wavelength filtering device using optical fiber Bragg grating'1997 5,557,468'Chromatic dispersion compensation device'1996 5,283,845'Multi-port tunable fiber-optic filter'1994 D0277845'Combined battery charger, power supply and battery tester'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985Patents assigned to VANSON ELECTRONICS LTD (1)· patent assignee history

1985Based in Kowloon, HK· patent location history

1994–2000Patents assigned to JDS FITEL INC (7)· patent assignee history

1994–2000Based in Kanata, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
JDS FITEL INC	7	1994–2000
VANSON ELECTRONICS LTD	1	1985

Locations

Location	Patents	Span
Kanata, CA	9	1994–2000
Kowloon, HK	1	1985