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PatentBrief

Portfolio comparison

Nat Res Dev vs iRobot Corp

Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.

Company A

Nat Res Dev

Patents indexed

1

Year range

1957

Most recent

1957

semiconductorssoftware

Activity by Decade

1950s
1

Company B

iRobot Corp

Patents indexed

1

Year range

2005

Most recent

2005

consumer_electronicsmechanicalai_ml

Activity by Decade

2000s
1

How to use

Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.