Inventor

Yongming Cai

Inventor

Singapore, SG

Overview

5→

Patents

1997–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 5 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein18%

C08LCompositions of macromolecular compounds12%

G02BOptical elements, systems or apparatus12%

B01DSeparation6%

C02FTreatment of water, waste water, sewage, or sludge6%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%

H04BTransmission6%

PatentTitleYear

11,036,068Non-volatile thermotropic optical switches based on ionic liquid(s) and polymer blends2021 11,007,482Draw solute and an improved forward osmosis method2021 6,909,826'Multiple grating optical waveguide monitor'2005 5,845,025'Optical coupling device and process for modulating light'1998 5,679,763'Polyquinoline-based nonlinear optical materials'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to ENICHEM SPA (1)· patent assignee history

1997–1998Based in West Chester, PA, US· patent location history

1998Patents assigned to UNIV PENNSYLVANIA (1)· patent assignee history

2005Patents assigned to PRINCETON LIGHTWAVE INC (1)· patent assignee history

2005Based in San Jose, CA, US· patent location history

2021Patents assigned to UNIV NANYANG TECH (2)· patent assignee history

2021Based in Singapore, SG· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV NANYANG TECH	2	2021
ENICHEM SPA	1	1997
PRINCETON LIGHTWAVE INC	1	2005
UNIV PENNSYLVANIA	1	1998

Locations

Location	Patents	Span
Singapore, SG	2	2021
West Chester, Pennsylvania, US	2	1997–1998
San Jose, California, US	1	2005