How many patents does Petrochina Co Ltd have in patentsdb?

Petrochina Co Ltd is linked to 324 publications as assignee in our database.

What technology areas does Petrochina Co Ltd patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (162); Physics (126); Fixed Constructions (122).

In our data, assignee counts were 20 in 2024 and 14 in 2025 (lower year over year).

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

Petrochina Co Ltd holds 324 patents in our database, with recent filings and technology areas summarized below.

Year-over-year patent counts for this assignee.

Filing activity over the last five years is rapidly declining.

Latest publications where this party is an assignee.

Representative or frequently cited publications from precomputed assignee stats.

Most common classification codes in this portfolio.

Mapped technology topics for this assignee.

Company technology slices
Technology	Patents
Chemistry & Metallurgy	162
Physics	126
Fixed Constructions	122
Operations & Transport	97
Cross-Sectional Technologies	32
Electricity	19
Mechanical Engineering	10

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

How many patents does Petrochina Co Ltd have in patentsdb?: Petrochina Co Ltd is linked to 324 publications as assignee in our database.
What technology areas does Petrochina Co Ltd patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (162); Physics (126); Fixed Constructions (122).
Is Petrochina Co Ltd's patent activity growing?: In our data, assignee counts were 20 in 2024 and 14 in 2025 (lower year over year).
What are recent patents assigned to Petrochina Co Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.