Inventor
Guangchang Ma
Inventor
Beijing, CN
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere39%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds11%
C07CAcyclic or carbocyclic compounds7%
A61KPreparations for medical, dental or toiletry purposes4%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations4%
B01DSeparation4%
C01BNon-metallic elements4%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%
C08BPolysaccharides4%
PatentTitleYear
11,013,794Method for preparing foot-and-mouth disease vaccines202110,336,931Use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid201910,308,857Super-amphiphobic composite material and use of the same as inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids201910,000,684Drilling fluid additive composition, and oil-based drilling fluid and use thereof20189,890,318'Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging'20189,834,717Drilling fluid additive composition and pseudo oil-based drilling fluid suitable for horizontal shale gas wells20179,790,417'High-density water-based drilling fluid suitable for horizontal shale gas wells'20179,790,415'Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells'20179,783,726'Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells'20179,783,725'Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wells'20179,745,501'Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof'20179,410,071'Oil-based viscosifier of drilling fluid and the preparation method thereof'2016Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2016–2017Patents assigned to CHINA UNIV OF PETROLEUM (BEIJING) (7)· patent assignee history
2016–2019Based in Beijing, CN· patent location history
2018–2019Patents assigned to UNIV CHINA PETROLEUM BEIJING (4)· patent assignee history
2021Patents assigned to SHANGHAI SHEN LIAN BIOMEDICAL CORP (1)· patent assignee history
2021Based in Shanghai, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHINA UNIV OF PETROLEUM (BEIJING) | 7 | 2016–2017 |
| UNIV CHINA PETROLEUM BEIJING | 4 | 2018–2019 |
| SHANGHAI SHEN LIAN BIOMEDICAL CORP | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Beijing, CN | 11 | 2016–2019 |
| Shanghai, CN | 1 | 2021 |