Inventor

Dongcheng Han

Inventor

Hefei, CN

Overview

2→

Patents

2020–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 2 as inventor

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

B29Bprimary

B29BPreparation or pretreatment of the material to be shaped13%

B29CShaping or joining of plastics13%

B29DProducing particular articles from plastics or from substances in a plastic state13%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts13%

B29LIndexing scheme associated with subclass b29c, relating to particular articles13%

G02BOptical elements, systems or apparatus13%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices13%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management13%

PatentTitleYear

11,092,888Processing method for multi-row, multi-column flat lens with equivalent negative refractive index2021 10,786,937Processing technology for making seepage irrigation pipe with alternate effluent section and non-effluent section2020

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2020Patents assigned to UNIV NINGXIA (1)· patent assignee history

2020Based in Yinchuan, CN· patent location history

2021Patents assigned to ANHUI DONGCHAO SCIENCE AND TECH COMPANY LTD (1)· patent assignee history

2021Based in Hefei, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ANHUI DONGCHAO SCIENCE AND TECH COMPANY LTD	1	2021
UNIV NINGXIA	1	2020

Locations

Location	Patents	Span
Hefei, CN	1	2021
Yinchuan, CN	1	2020