Portfolio comparison
William F. Semple vs Syntex SA
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
Top Patents1 enriched
US 2744122· 1956
The Chemical Discovery Behind the First Oral Contraceptive Pill
Activity by Decade
1950s1
How to use
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