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Inventor

Hongjiang DONG

Inventor
CN

Overview

2→
Patents
2025
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.

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry11%
B60LPropulsion of electrically-propelled vehicles11%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for11%
C07DHeterocyclic compounds11%
F22BMethods of steam generation11%
F22DPreheating, or accumulating preheated, feed-water for steam generation11%
H01HElectric switches11%
Y02PClimate change mitigation technologies in the production or processing of goods11%
Y02TClimate change mitigation technologies related to transportation11%
PatentTitleYear
12,372,231Device and method for producing high-pressure or super high-pressure steam as byproduct from maleic anhydride producing device202512,198,884Direct current contactor with moving and fixed contact components located within an arc-extinguishing cavity2025

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2025Patents assigned to CHANGZHOU RUIHUA CHEMICAL ENGINEERING TECH CO LTD (1)· patent assignee history
2025Patents assigned to HUAWEI DIGITAL POWER TECH CO LTD (1)· patent assignee history
2025Based in CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHANGZHOU RUIHUA CHEMICAL ENGINEERING TECH CO LTD12025
HUAWEI DIGITAL POWER TECH CO LTD12025
Locations
LocationPatentsSpan
CN22025