How many patents does Indian Oil Corp Ltd have in patentsdb?

Indian Oil Corp Ltd is linked to 447 publications as assignee in our database.

What technology areas does Indian Oil Corp Ltd patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (411); Operations & Transport (211); Cross-Sectional Technologies (125).

In our data, assignee counts were 30 in 2024 and 21 in 2025 (lower year over year).

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

Indian Oil Corp Ltd holds 447 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 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	411
Operations & Transport	211
Cross-Sectional Technologies	125
Mechanical Engineering	24
Electricity	21
Human Necessities	12
Physics	9
Textiles & Paper	8
Fixed Constructions	6

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

How many patents does Indian Oil Corp Ltd have in patentsdb?: Indian Oil Corp Ltd is linked to 447 publications as assignee in our database.
What technology areas does Indian Oil Corp Ltd patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (411); Operations & Transport (211); Cross-Sectional Technologies (125).
Is Indian Oil Corp Ltd's patent activity growing?: In our data, assignee counts were 30 in 2024 and 21 in 2025 (lower year over year).
What are recent patents assigned to Indian Oil Corp Ltd?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.