How many patents does Hayashi Keiji have in patentsdb?

Hayashi Keiji is linked to 6 publications as assignee in our database.

What technology areas does Hayashi Keiji patent most?

Top mapped technology areas by patent count: Chemistry & Metallurgy (6); Mechanical Engineering (3); Cross-Sectional Technologies (2).

In our data, assignee counts were 5 in 2015 and 1 in 2016 (lower year over year).

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

Hayashi Keiji holds 6 patents in our database, with recent filings and technology areas summarized below.

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
2015	5
2016	1

Browse patents by year
Year	Patents
2015	5
2016	1

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	6
Mechanical Engineering	3
Cross-Sectional Technologies	2
Operations & Transport	1

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

How many patents does Hayashi Keiji have in patentsdb?: Hayashi Keiji is linked to 6 publications as assignee in our database.
What technology areas does Hayashi Keiji patent most?: Top mapped technology areas by patent count: Chemistry & Metallurgy (6); Mechanical Engineering (3); Cross-Sectional Technologies (2).
Is Hayashi Keiji's patent activity growing?: In our data, assignee counts were 5 in 2015 and 1 in 2016 (lower year over year).
What are recent patents assigned to Hayashi Keiji?: See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.