Portfolio comparison
William F. Semple vs Moleculon Research Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 98304· 1869
William Semple's 1869 Patent for Improved Chewing Gum
Activity by Decade
1860s1
Company B
Moleculon Research Corp
Patents indexed
1
Year range
1972
Most recent
1972
mechanicalconsumer_electronics
Top Patents1 enriched
US 3655201· 1972
How the 2x2x2 Magnetic Puzzle Cube Works
Activity by Decade
1970s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.