How many patents does China Nat Petroleum Corp have in patentsdb?

China Nat Petroleum Corp is linked to 185 publications as assignee in our database.

What technology areas does China Nat Petroleum Corp patent most?

Top mapped technology areas by patent count: Fixed Constructions (99); Chemistry & Metallurgy (87); Physics (49).

In our data, assignee counts were 50 in 2024 and 52 in 2025 (higher year over year).

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

China Nat Petroleum Corp holds 185 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 growing.

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
Fixed Constructions	99
Chemistry & Metallurgy	87
Physics	49
Cross-Sectional Technologies	20
Mechanical Engineering	16
Operations & Transport	14
Electricity	12

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

How many patents does China Nat Petroleum Corp have in patentsdb?: China Nat Petroleum Corp is linked to 185 publications as assignee in our database.
What technology areas does China Nat Petroleum Corp patent most?: Top mapped technology areas by patent count: Fixed Constructions (99); Chemistry & Metallurgy (87); Physics (49).
Is China Nat Petroleum Corp's patent activity growing?: In our data, assignee counts were 50 in 2024 and 52 in 2025 (higher year over year).
What are recent patents assigned to China Nat Petroleum Corp?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.