Inventor
WEIMIN CHENG
Inventor
CN
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling20%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels20%
C09KMaterials for miscellaneous applications, not provided for elsewhere13%
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents7%
B01DSeparation7%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%
C04BLime, magnesia7%
E21CMining or quarrying7%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general7%
Y02ATechnologies for adaptation to climate change7%
PatentTitleYear
12,085,004Swirl structure-based exhaust aftertreatment device for underground mining diesel vehicle202411,691,043Multi-functional plugging agent for coal mine and preparation method thereof202311,506,041Drilling-slitting-sealing-fracturing device and method for a deep low-permeability gassy coal seam202211,396,810Full-length screen pipe hole protection device and method with pressurized hole packing in soft coal seam2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2024Patents assigned to UNIV SHANDONG SCIENCE & TECH (4)· patent assignee history
2022–2024Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV SHANDONG SCIENCE & TECH | 4 | 2022–2024 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 4 | 2022–2024 |