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Inventor

Shifu Yuan

Inventor
Santa Barbara, CA, US

Overview

12→
Patents
2000–2016
Patent span
Physics
Primary field (CPC G)

Patents· 12 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus61%
H04QSelecting22%
H04JMultiplex communication11%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%
PatentTitleYear
9,366,824'Optical circuit switch with integral circulators'20169,213,143'Making connections through an optical circuit switch'20159,063,288'Optical circuit switch with integral circulators'20158,822,906'Multichannel optical power meter using free space beam sampling'20147,676,125'Method and apparatus to provide multi-channel bulk fiber optical power detection'20107,529,441'Wavelength routing optical switch'20097,254,293'Wavelength routing optical switch'20077,127,137'Optical switch with adjustable optical loss'20066,904,195'Optical switch with adjustable optical loss'20056,819,815'Method and apparatus for indirect adjustment of optical switch reflectors'20046,597,825'Optical tap for an optical switch'20036,160,665'High extinction ratio polarization beamsplitter'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000Patents assigned to CHORUM TECHNOLOGIES INC (1)· patent assignee history
2000Based in Painted Post, NY, US· patent location history
2003–2010Patents assigned to CALIENT NETWORKS INC (6)· patent assignee history
2003–2009Based in Santa Barbara, CA, US· patent location history
2004Patents assigned to CALIENT NETWORKS (1)· patent assignee history
2010–2016Based in Camarillo, CA, US· patent location history
2014–2016Patents assigned to CALIENT TECHNOLOGIES INC (4)· patent assignee history
2014Patents assigned to HELKEY ROGER JONATHAN (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CALIENT NETWORKS INC62003–2010
CALIENT TECHNOLOGIES INC42014–2016
CALIENT NETWORKS12004
CHORUM TECHNOLOGIES INC12000
HELKEY ROGER JONATHAN12014
Locations
LocationPatentsSpan
Santa Barbara, California, US62003–2009
Camarillo, California, US52010–2016
Painted Post, New York, US12000