The data shown in the 6 Year Inkjet Patent Trend Graph was obtained by searching the US Patent & Trademark Office online Patent Full Text and Image Database

The search was performed with the query: ("INKJET" or "INK JET") AND ISD/2006$$ AND AN/(company_name)

This query finds patents which meet all three of these criteria:

• ("INKJET" or "INK JET")
  This term finds patents which include either "INKJET" or "INK JET" (anywhere in the full text of the patent). The search is not case sensitive and patents with "InkJET" in the text are found.
• ISD/2006$$
  This term finds patents with an official Issue Date in the year 2006.
• AN/ (company_name)
  This terms finds patents where the ownership of the patent is assigned to company_name at the time the patent issued. The string company_name was set to find patents owned by a specific company:

Company	company_name
Brother	"Brother"
Canon	"Canon"
Epson	"Epson"
Fuji Photo	"Fuji" AND "Photo"
HP	"Hewlett"
Kodak	"Kodak"
Lexmark	"Lexmark"
Samsung	"Samsung"
Silverbrook	"Silverbrook"
Xerox	"Xerox" ANDNOT "Fuji"

For the purpose of clarity only 10 companies are shown on the graph. Many other companies obtained ink jet related patents in the years shown.