Portfolio comparison
John L. Mason vs Centocor Inc
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
Top Patents1 enriched
US 7070775· 2006
How Engineered Antibodies Block Inflammation-Causing Proteins
Activity by Decade
2000s1
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