What are recent patents assigned to Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company?

See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.

Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company patents

Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company holds 5 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
Metric	Value
Total patents	5
Recent patents	0
First publication	Apr 25, 2019
Latest publication	Feb 4, 2020

Filing trend

Year-over-year patent counts for this assignee.

Filing activity appears to be declining based on the most recent years.

Patents filed per year
Year	Patents
2019	4
2020	1

Browse patents by year
Year	Patents
2019	4
2020	1

Recent patents

Latest publications where this party is an assignee.

Skid-mounted dispersed particle gel production device, dispersed particle gel and preparation method and use thereof
US-10550318-B1 · Feb 4, 2020 · US
Colloidal nano-graphite-strengthened bulk gel system for dispersed particle gel and composition thereof
US-10414969-B2 · Sep 17, 2019 · US
Colloidal nano-graphite-strengthened bulk gel system for dispersed particle gel and composition thereof
US-2019249068-A1 · Aug 15, 2019 · US
Modified graphite particle system for strengthening polymer/binary/ternary composite oil displacement system and preparation and application thereof
US-10294409-B2 · May 21, 2019 · US
Modified graphite particle system for strengthening polymer/binary/ternary composite oil displacement system and preparation and application thereof
US-2019119558-A1 · Apr 25, 2019 · US

Notable patents

Representative or frequently cited publications from precomputed assignee stats.

Technology areas

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Chemistry & Metallurgy	5
Fixed Constructions	3

Frequently asked questions

Answers are generated from the same data shown on this page.

How many patents does Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company have in patentsdb?: Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company is linked to 5 publications as assignee in our database.
What technology areas does Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (5); Fixed Constructions (3).
Is Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company's patent activity growing?: In our data, assignee counts were 4 in 2019 and 1 in 2020 (lower year over year).
What are recent patents assigned to Oil And Gas Tech Research Institute Petrochina Changqing Oilfield Company?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.