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Inventor

Yi-Sheng Chang

Inventor
Taichung, TW

Overview

3→
Patents
2007–2018
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

C12Pprimary
C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture17%
G02BOptical elements, systems or apparatus17%
G06FElectric digital data processing17%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems17%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management17%
PatentTitleYear
9,866,106'Power supply apparatus with extending hold up time function'20188,724,221'Optical interference bandpass filter'20147,232,669'Process for enhancing anaerobic biohydrogen production'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007Patents assigned to UNIV FENG CHIA (1)· patent assignee history
2007–2014Based in Taichung, TW· patent location history
2014Patents assigned to ASIA OPTICAL CO INC (1)· patent assignee history
2014Patents assigned to CHANG YI-SHENG (1)· patent assignee history
2018Patents assigned to DELTA ELECTRONICS INC (1)· patent assignee history
2018Based in Taoyuan County, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ASIA OPTICAL CO INC12014
CHANG YI-SHENGself12014
DELTA ELECTRONICS INC12018
UNIV FENG CHIA12007
Locations
LocationPatentsSpan
Taichung, TW22007–2014
Taoyuan County, TW12018