How many patents does Tosoh Corp have in patentsdb?

Tosoh Corp is linked to 552 publications as assignee in our database.

What technology areas does Tosoh Corp patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (518); Operations & Transport (198); Electricity (148).

In our data, assignee counts were 72 in 2024 and 67 in 2025 (lower year over year).

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

Tosoh Corp holds 552 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 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
Chemistry & Metallurgy	518
Operations & Transport	198
Electricity	148
Cross-Sectional Technologies	114
Physics	77
Human Necessities	48
Mechanical Engineering	14
Textiles & Paper	5
Fixed Constructions	2

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

How many patents does Tosoh Corp have in patentsdb?: Tosoh Corp is linked to 552 publications as assignee in our database.
What technology areas does Tosoh Corp patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (518); Operations & Transport (198); Electricity (148).
Is Tosoh Corp's patent activity growing?: In our data, assignee counts were 72 in 2024 and 67 in 2025 (lower year over year).
What are recent patents assigned to Tosoh Corp?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.