Portfolio comparison
Kirin Amgen Inc vs Sikorsky Aircraft Corp
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Kirin Amgen Inc
Patents indexed
1
Year range
1987
Most recent
1987
biotechpharmaceuticalgene_editingbiotechnology
Top Patents1 enriched
US 4703008· 1987
How to Make Human Erythropoietin (EPO) Using Engineered DNA
Activity by Decade
1980s1
Top Patents1 enriched
US 1994488· 1935
Igor Sikorsky's Early Design for a Vertical Takeoff Aircraft
Activity by Decade
1930s1
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